./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe001_power.oepc.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_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/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_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/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_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/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 67d3e2c6779f32015be5c9fe966e6a739e1c762dcde7f287ad383839eb490e84 --- 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 04:10:50,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 04:10:50,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 04:10:50,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 04:10:50,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 04:10:50,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 04:10:50,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 04:10:50,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 04:10:50,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 04:10:50,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 04:10:50,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 04:10:50,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 04:10:50,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 04:10:50,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 04:10:50,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 04:10:50,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 04:10:50,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 04:10:50,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 04:10:50,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 04:10:50,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 04:10:50,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 04:10:50,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 04:10:50,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 04:10:50,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 04:10:50,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 04:10:50,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 04:10:50,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 04:10:50,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 04:10:50,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 04:10:50,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 04:10:50,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 04:10:50,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 04:10:50,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 04:10:50,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 04:10:50,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 04:10:50,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 04:10:50,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 04:10:50,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 04:10:50,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 04:10:50,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 04:10:50,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 04:10:50,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-23 04:10:50,727 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 04:10:50,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 04:10:50,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 04:10:50,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 04:10:50,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 04:10:50,730 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 04:10:50,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 04:10:50,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 04:10:50,731 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 04:10:50,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 04:10:50,733 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 04:10:50,733 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 04:10:50,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 04:10:50,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 04:10:50,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 04:10:50,734 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 04:10:50,734 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 04:10:50,734 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 04:10:50,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 04:10:50,735 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 04:10:50,735 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 04:10:50,735 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 04:10:50,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 04:10:50,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 04:10:50,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 04:10:50,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:10:50,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 04:10:50,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 04:10:50,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 04:10:50,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 04:10:50,737 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 04:10:50,737 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 04:10:50,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 04:10:50,738 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_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67d3e2c6779f32015be5c9fe966e6a739e1c762dcde7f287ad383839eb490e84 [2022-11-23 04:10:51,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 04:10:51,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 04:10:51,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 04:10:51,068 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 04:10:51,069 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 04:10:51,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i [2022-11-23 04:10:54,114 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 04:10:54,472 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 04:10:54,472 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i [2022-11-23 04:10:54,501 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/bin/uautomizer-QkZJyEgLgS/data/07e4b178a/ff7463283ce74a569b779bf895ae21e4/FLAG8ff2baa43 [2022-11-23 04:10:54,514 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/bin/uautomizer-QkZJyEgLgS/data/07e4b178a/ff7463283ce74a569b779bf895ae21e4 [2022-11-23 04:10:54,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 04:10:54,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 04:10:54,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 04:10:54,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 04:10:54,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 04:10:54,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:10:54" (1/1) ... [2022-11-23 04:10:54,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2175ec26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:54, skipping insertion in model container [2022-11-23 04:10:54,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:10:54" (1/1) ... [2022-11-23 04:10:54,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 04:10:54,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 04:10:54,747 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_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i[995,1008] [2022-11-23 04:10:55,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:10:55,144 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 04:10:55,159 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_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/sv-benchmarks/c/pthread-wmm/safe001_power.oepc.i[995,1008] [2022-11-23 04:10:55,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:10:55,279 INFO L208 MainTranslator]: Completed translation [2022-11-23 04:10:55,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:55 WrapperNode [2022-11-23 04:10:55,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 04:10:55,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 04:10:55,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 04:10:55,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 04:10:55,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:55" (1/1) ... [2022-11-23 04:10:55,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:55" (1/1) ... [2022-11-23 04:10:55,369 INFO L138 Inliner]: procedures = 176, calls = 84, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 170 [2022-11-23 04:10:55,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 04:10:55,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 04:10:55,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 04:10:55,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 04:10:55,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:55" (1/1) ... [2022-11-23 04:10:55,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:55" (1/1) ... [2022-11-23 04:10:55,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:55" (1/1) ... [2022-11-23 04:10:55,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:55" (1/1) ... [2022-11-23 04:10:55,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:55" (1/1) ... [2022-11-23 04:10:55,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:55" (1/1) ... [2022-11-23 04:10:55,431 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:55" (1/1) ... [2022-11-23 04:10:55,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:55" (1/1) ... [2022-11-23 04:10:55,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 04:10:55,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 04:10:55,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 04:10:55,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 04:10:55,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:55" (1/1) ... [2022-11-23 04:10:55,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:10:55,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:10:55,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 04:10:55,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45560de5-9815-4b1e-9f3f-dc3bc9f5e8be/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 04:10:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 04:10:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 04:10:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 04:10:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 04:10:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 04:10:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 04:10:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-23 04:10:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-23 04:10:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-23 04:10:55,534 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-23 04:10:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-23 04:10:55,534 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-23 04:10:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 04:10:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 04:10:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 04:10:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 04:10:55,536 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 04:10:55,776 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 04:10:55,778 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 04:10:56,638 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 04:10:57,645 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 04:10:57,645 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 04:10:57,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:57 BoogieIcfgContainer [2022-11-23 04:10:57,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 04:10:57,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 04:10:57,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 04:10:57,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 04:10:57,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:10:54" (1/3) ... [2022-11-23 04:10:57,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a41532f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:10:57, skipping insertion in model container [2022-11-23 04:10:57,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:55" (2/3) ... [2022-11-23 04:10:57,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a41532f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:10:57, skipping insertion in model container [2022-11-23 04:10:57,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:57" (3/3) ... [2022-11-23 04:10:57,667 INFO L112 eAbstractionObserver]: Analyzing ICFG safe001_power.oepc.i [2022-11-23 04:10:57,694 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 04:10:57,694 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 66 error locations. [2022-11-23 04:10:57,695 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 04:10:57,940 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 04:10:57,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 199 transitions, 413 flow [2022-11-23 04:10:58,139 INFO L130 PetriNetUnfolder]: 2/196 cut-off events. [2022-11-23 04:10:58,139 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 04:10:58,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 196 events. 2/196 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 376 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2022-11-23 04:10:58,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 199 transitions, 413 flow [2022-11-23 04:10:58,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 196 transitions, 401 flow [2022-11-23 04:10:58,166 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 04:10:58,197 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 196 transitions, 401 flow [2022-11-23 04:10:58,200 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 196 transitions, 401 flow [2022-11-23 04:10:58,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 196 transitions, 401 flow [2022-11-23 04:10:58,273 INFO L130 PetriNetUnfolder]: 2/196 cut-off events. [2022-11-23 04:10:58,274 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 04:10:58,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 196 events. 2/196 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 380 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2022-11-23 04:10:58,280 INFO L119 LiptonReduction]: Number of co-enabled transitions 9828 [2022-11-23 04:11:39,396 INFO L134 LiptonReduction]: Checked pairs total: 40965 [2022-11-23 04:11:39,396 INFO L136 LiptonReduction]: Total number of compositions: 196 [2022-11-23 04:11:39,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 04:11:39,419 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;@5fd8d67d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 04:11:39,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 109 error locations. [2022-11-23 04:11:39,421 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-23 04:11:39,422 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 04:11:39,422 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:11:39,422 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-23 04:11:39,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:11:39,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:11:39,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1397, now seen corresponding path program 1 times [2022-11-23 04:11:39,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:11:39,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029296754] [2022-11-23 04:11:39,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:39,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:11:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:11:39,576 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 04:11:39,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:11:39,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029296754] [2022-11-23 04:11:39,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029296754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:11:39,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:11:39,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 04:11:39,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527391960] [2022-11-23 04:11:39,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:11:39,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 04:11:39,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:11:39,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 04:11:39,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 04:11:39,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 395 [2022-11-23 04:11:39,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 193 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 04:11:39,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:11:39,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 395 [2022-11-23 04:11:39,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:11:45,125 INFO L130 PetriNetUnfolder]: 13766/19438 cut-off events. [2022-11-23 04:11:45,125 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-23 04:11:45,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38877 conditions, 19438 events. 13766/19438 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 1496. Compared 130496 event pairs, 13766 based on Foata normal form. 0/8252 useless extension candidates. Maximal degree in co-relation 38866. Up to 19343 conditions per place. [2022-11-23 04:11:45,292 INFO L137 encePairwiseOnDemand]: 351/395 looper letters, 42 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2022-11-23 04:11:45,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 48 transitions, 189 flow [2022-11-23 04:11:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 04:11:45,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 04:11:45,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 352 transitions. [2022-11-23 04:11:45,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44556962025316454 [2022-11-23 04:11:45,315 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 352 transitions. [2022-11-23 04:11:45,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 352 transitions. [2022-11-23 04:11:45,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:11:45,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 352 transitions. [2022-11-23 04:11:45,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 176.0) internal successors, (352), 2 states have internal predecessors, (352), 0 states have call successors, (0), 0 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 04:11:45,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 0 states have call successors, (0), 0 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 04:11:45,339 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 0 states have call successors, (0), 0 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 04:11:45,341 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 193 flow. Second operand 2 states and 352 transitions. [2022-11-23 04:11:45,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 48 transitions, 189 flow [2022-11-23 04:11:45,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 186 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-23 04:11:45,351 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 102 flow [2022-11-23 04:11:45,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2022-11-23 04:11:45,357 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -45 predicate places. [2022-11-23 04:11:45,357 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 102 flow [2022-11-23 04:11:45,358 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 04:11:45,358 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:11:45,358 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 04:11:45,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 04:11:45,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:11:45,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:11:45,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1380911, now seen corresponding path program 1 times [2022-11-23 04:11:45,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:11:45,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619187542] [2022-11-23 04:11:45,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:45,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:11:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:11:45,704 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 04:11:45,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:11:45,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619187542] [2022-11-23 04:11:45,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619187542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:11:45,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:11:45,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 04:11:45,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226975150] [2022-11-23 04:11:45,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:11:45,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:11:45,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:11:45,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:11:45,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:11:45,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 395 [2022-11-23 04:11:45,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:45,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:11:45,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 395 [2022-11-23 04:11:45,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:11:48,520 INFO L130 PetriNetUnfolder]: 5696/8190 cut-off events. [2022-11-23 04:11:48,520 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 04:11:48,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16384 conditions, 8190 events. 5696/8190 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 49936 event pairs, 5696 based on Foata normal form. 404/4888 useless extension candidates. Maximal degree in co-relation 16381. Up to 8133 conditions per place. [2022-11-23 04:11:48,573 INFO L137 encePairwiseOnDemand]: 386/395 looper letters, 34 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2022-11-23 04:11:48,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 156 flow [2022-11-23 04:11:48,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:11:48,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:11:48,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2022-11-23 04:11:48,576 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36540084388185656 [2022-11-23 04:11:48,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2022-11-23 04:11:48,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2022-11-23 04:11:48,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:11:48,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2022-11-23 04:11:48,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 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 04:11:48,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:11:48,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:11:48,583 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 102 flow. Second operand 3 states and 433 transitions. [2022-11-23 04:11:48,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 156 flow [2022-11-23 04:11:48,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 40 transitions, 156 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 04:11:48,585 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 88 flow [2022-11-23 04:11:48,585 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2022-11-23 04:11:48,586 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -51 predicate places. [2022-11-23 04:11:48,586 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 88 flow [2022-11-23 04:11:48,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:48,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:11:48,587 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 04:11:48,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 04:11:48,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:11:48,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:11:48,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1380910, now seen corresponding path program 1 times [2022-11-23 04:11:48,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:11:48,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688495876] [2022-11-23 04:11:48,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:48,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:11:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:11:48,661 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 04:11:48,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:11:48,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688495876] [2022-11-23 04:11:48,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688495876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:11:48,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:11:48,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 04:11:48,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486889523] [2022-11-23 04:11:48,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:11:48,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:11:48,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:11:48,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:11:48,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:11:48,722 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 395 [2022-11-23 04:11:48,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 04:11:48,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:11:48,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 395 [2022-11-23 04:11:48,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:11:50,875 INFO L130 PetriNetUnfolder]: 5077/7862 cut-off events. [2022-11-23 04:11:50,876 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 04:11:50,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15666 conditions, 7862 events. 5077/7862 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 49642 event pairs, 2879 based on Foata normal form. 0/5878 useless extension candidates. Maximal degree in co-relation 15662. Up to 4172 conditions per place. [2022-11-23 04:11:50,920 INFO L137 encePairwiseOnDemand]: 373/395 looper letters, 38 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2022-11-23 04:11:50,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 50 transitions, 206 flow [2022-11-23 04:11:50,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:11:50,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:11:50,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2022-11-23 04:11:50,923 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3670886075949367 [2022-11-23 04:11:50,924 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2022-11-23 04:11:50,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2022-11-23 04:11:50,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:11:50,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2022-11-23 04:11:50,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:50,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:11:50,930 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:11:50,930 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 88 flow. Second operand 3 states and 435 transitions. [2022-11-23 04:11:50,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 50 transitions, 206 flow [2022-11-23 04:11:50,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 04:11:50,932 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 177 flow [2022-11-23 04:11:50,933 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2022-11-23 04:11:50,933 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -51 predicate places. [2022-11-23 04:11:50,934 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 177 flow [2022-11-23 04:11:50,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 04:11:50,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:11:50,935 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:11:50,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 04:11:50,935 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:11:50,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:11:50,936 INFO L85 PathProgramCache]: Analyzing trace with hash 410993723, now seen corresponding path program 1 times [2022-11-23 04:11:50,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:11:50,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302150271] [2022-11-23 04:11:50,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:50,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:11:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:11:51,081 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 04:11:51,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:11:51,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302150271] [2022-11-23 04:11:51,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302150271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:11:51,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:11:51,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 04:11:51,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737022232] [2022-11-23 04:11:51,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:11:51,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:11:51,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:11:51,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:11:51,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:11:51,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 395 [2022-11-23 04:11:51,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 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 04:11:51,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:11:51,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 395 [2022-11-23 04:11:51,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:11:53,437 INFO L130 PetriNetUnfolder]: 6170/9570 cut-off events. [2022-11-23 04:11:53,437 INFO L131 PetriNetUnfolder]: For 3972/4087 co-relation queries the response was YES. [2022-11-23 04:11:53,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26778 conditions, 9570 events. 6170/9570 cut-off events. For 3972/4087 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 62438 event pairs, 1711 based on Foata normal form. 24/8245 useless extension candidates. Maximal degree in co-relation 26773. Up to 8011 conditions per place. [2022-11-23 04:11:53,498 INFO L137 encePairwiseOnDemand]: 391/395 looper letters, 68 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2022-11-23 04:11:53,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 433 flow [2022-11-23 04:11:53,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:11:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:11:53,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2022-11-23 04:11:53,501 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3789029535864979 [2022-11-23 04:11:53,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2022-11-23 04:11:53,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2022-11-23 04:11:53,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:11:53,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2022-11-23 04:11:53,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:53,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:11:53,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:11:53,515 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 177 flow. Second operand 3 states and 449 transitions. [2022-11-23 04:11:53,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 433 flow [2022-11-23 04:11:53,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 04:11:53,553 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 174 flow [2022-11-23 04:11:53,554 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2022-11-23 04:11:53,556 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -50 predicate places. [2022-11-23 04:11:53,556 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 174 flow [2022-11-23 04:11:53,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 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 04:11:53,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:11:53,557 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:11:53,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 04:11:53,558 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:11:53,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:11:53,559 INFO L85 PathProgramCache]: Analyzing trace with hash 410993473, now seen corresponding path program 1 times [2022-11-23 04:11:53,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:11:53,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349203755] [2022-11-23 04:11:53,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:53,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:11:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:11:53,740 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 04:11:53,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:11:53,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349203755] [2022-11-23 04:11:53,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349203755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:11:53,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:11:53,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 04:11:53,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283046507] [2022-11-23 04:11:53,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:11:53,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:11:53,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:11:53,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:11:53,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:11:53,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 395 [2022-11-23 04:11:53,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 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 04:11:53,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:11:53,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 395 [2022-11-23 04:11:53,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:11:55,456 INFO L130 PetriNetUnfolder]: 5650/8933 cut-off events. [2022-11-23 04:11:55,456 INFO L131 PetriNetUnfolder]: For 1587/1716 co-relation queries the response was YES. [2022-11-23 04:11:55,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23798 conditions, 8933 events. 5650/8933 cut-off events. For 1587/1716 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 59119 event pairs, 2484 based on Foata normal form. 0/6644 useless extension candidates. Maximal degree in co-relation 23792. Up to 5155 conditions per place. [2022-11-23 04:11:55,505 INFO L137 encePairwiseOnDemand]: 391/395 looper letters, 68 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2022-11-23 04:11:55,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 423 flow [2022-11-23 04:11:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:11:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:11:55,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2022-11-23 04:11:55,509 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38396624472573837 [2022-11-23 04:11:55,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2022-11-23 04:11:55,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2022-11-23 04:11:55,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:11:55,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2022-11-23 04:11:55,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 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 04:11:55,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:11:55,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:11:55,516 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 174 flow. Second operand 3 states and 455 transitions. [2022-11-23 04:11:55,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 423 flow [2022-11-23 04:11:55,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 419 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 04:11:55,531 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 184 flow [2022-11-23 04:11:55,532 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2022-11-23 04:11:55,533 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -48 predicate places. [2022-11-23 04:11:55,533 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 184 flow [2022-11-23 04:11:55,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 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 04:11:55,534 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:11:55,534 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:11:55,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 04:11:55,534 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:11:55,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:11:55,535 INFO L85 PathProgramCache]: Analyzing trace with hash -144098952, now seen corresponding path program 1 times [2022-11-23 04:11:55,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:11:55,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911450470] [2022-11-23 04:11:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:55,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:11:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:11:55,804 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 04:11:55,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:11:55,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911450470] [2022-11-23 04:11:55,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911450470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:11:55,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:11:55,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 04:11:55,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965642766] [2022-11-23 04:11:55,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:11:55,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:11:55,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:11:55,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:11:55,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:11:55,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 395 [2022-11-23 04:11:55,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 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 04:11:55,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:11:55,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 395 [2022-11-23 04:11:55,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:11:58,196 INFO L130 PetriNetUnfolder]: 6862/11089 cut-off events. [2022-11-23 04:11:58,196 INFO L131 PetriNetUnfolder]: For 3280/3594 co-relation queries the response was YES. [2022-11-23 04:11:58,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30424 conditions, 11089 events. 6862/11089 cut-off events. For 3280/3594 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 78898 event pairs, 2823 based on Foata normal form. 1/8906 useless extension candidates. Maximal degree in co-relation 30417. Up to 7200 conditions per place. [2022-11-23 04:11:58,267 INFO L137 encePairwiseOnDemand]: 387/395 looper letters, 55 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2022-11-23 04:11:58,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 71 transitions, 382 flow [2022-11-23 04:11:58,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:11:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:11:58,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 430 transitions. [2022-11-23 04:11:58,271 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3628691983122363 [2022-11-23 04:11:58,271 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 430 transitions. [2022-11-23 04:11:58,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 430 transitions. [2022-11-23 04:11:58,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:11:58,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 430 transitions. [2022-11-23 04:11:58,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:11:58,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:11:58,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:11:58,278 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 184 flow. Second operand 3 states and 430 transitions. [2022-11-23 04:11:58,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 71 transitions, 382 flow [2022-11-23 04:11:58,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 376 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 04:11:58,286 INFO L231 Difference]: Finished difference. Result has 54 places, 54 transitions, 236 flow [2022-11-23 04:11:58,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=54, PETRI_TRANSITIONS=54} [2022-11-23 04:11:58,287 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -47 predicate places. [2022-11-23 04:11:58,287 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 54 transitions, 236 flow [2022-11-23 04:11:58,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 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 04:11:58,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:11:58,288 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:11:58,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 04:11:58,289 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:11:58,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:11:58,290 INFO L85 PathProgramCache]: Analyzing trace with hash -144098951, now seen corresponding path program 1 times [2022-11-23 04:11:58,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:11:58,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732837210] [2022-11-23 04:11:58,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:11:58,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:11:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:11:59,340 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 04:11:59,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:11:59,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732837210] [2022-11-23 04:11:59,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732837210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:11:59,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:11:59,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 04:11:59,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620555431] [2022-11-23 04:11:59,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:11:59,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 04:11:59,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:11:59,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 04:11:59,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-23 04:11:59,503 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 395 [2022-11-23 04:11:59,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 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 04:11:59,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:11:59,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 395 [2022-11-23 04:11:59,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:12:02,264 INFO L130 PetriNetUnfolder]: 8068/12575 cut-off events. [2022-11-23 04:12:02,264 INFO L131 PetriNetUnfolder]: For 5436/5436 co-relation queries the response was YES. [2022-11-23 04:12:02,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37598 conditions, 12575 events. 8068/12575 cut-off events. For 5436/5436 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 85179 event pairs, 1517 based on Foata normal form. 187/10565 useless extension candidates. Maximal degree in co-relation 37590. Up to 4446 conditions per place. [2022-11-23 04:12:02,324 INFO L137 encePairwiseOnDemand]: 374/395 looper letters, 117 selfloop transitions, 46 changer transitions 0/165 dead transitions. [2022-11-23 04:12:02,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 165 transitions, 982 flow [2022-11-23 04:12:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 04:12:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-23 04:12:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1325 transitions. [2022-11-23 04:12:02,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.33544303797468356 [2022-11-23 04:12:02,332 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1325 transitions. [2022-11-23 04:12:02,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1325 transitions. [2022-11-23 04:12:02,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:12:02,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1325 transitions. [2022-11-23 04:12:02,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 132.5) internal successors, (1325), 10 states have internal predecessors, (1325), 0 states have call successors, (0), 0 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 04:12:02,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 395.0) internal successors, (4345), 11 states have internal predecessors, (4345), 0 states have call successors, (0), 0 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 04:12:02,350 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 395.0) internal successors, (4345), 11 states have internal predecessors, (4345), 0 states have call successors, (0), 0 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 04:12:02,350 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 236 flow. Second operand 10 states and 1325 transitions. [2022-11-23 04:12:02,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 165 transitions, 982 flow [2022-11-23 04:12:02,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 165 transitions, 971 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 04:12:02,376 INFO L231 Difference]: Finished difference. Result has 63 places, 90 transitions, 570 flow [2022-11-23 04:12:02,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=570, PETRI_PLACES=63, PETRI_TRANSITIONS=90} [2022-11-23 04:12:02,379 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -38 predicate places. [2022-11-23 04:12:02,379 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 90 transitions, 570 flow [2022-11-23 04:12:02,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 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 04:12:02,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:02,380 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:02,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 04:12:02,381 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:12:02,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:02,385 INFO L85 PathProgramCache]: Analyzing trace with hash -756347826, now seen corresponding path program 2 times [2022-11-23 04:12:02,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:02,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583220441] [2022-11-23 04:12:02,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:02,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:02,689 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 04:12:02,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:02,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583220441] [2022-11-23 04:12:02,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583220441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:02,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:02,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:12:02,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567786934] [2022-11-23 04:12:02,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:02,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:12:02,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:02,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:12:02,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:12:02,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 395 [2022-11-23 04:12:02,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 90 transitions, 570 flow. Second operand has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 04:12:02,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:12:02,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 395 [2022-11-23 04:12:02,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:12:04,837 INFO L130 PetriNetUnfolder]: 7296/11636 cut-off events. [2022-11-23 04:12:04,837 INFO L131 PetriNetUnfolder]: For 10799/11012 co-relation queries the response was YES. [2022-11-23 04:12:04,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43003 conditions, 11636 events. 7296/11636 cut-off events. For 10799/11012 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 81886 event pairs, 3154 based on Foata normal form. 59/10148 useless extension candidates. Maximal degree in co-relation 42993. Up to 7387 conditions per place. [2022-11-23 04:12:04,897 INFO L137 encePairwiseOnDemand]: 393/395 looper letters, 88 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2022-11-23 04:12:04,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 111 transitions, 852 flow [2022-11-23 04:12:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:12:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:12:04,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2022-11-23 04:12:04,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36371308016877635 [2022-11-23 04:12:04,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2022-11-23 04:12:04,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2022-11-23 04:12:04,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:12:04,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2022-11-23 04:12:04,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:04,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:12:04,904 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:12:04,904 INFO L175 Difference]: Start difference. First operand has 63 places, 90 transitions, 570 flow. Second operand 3 states and 431 transitions. [2022-11-23 04:12:04,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 111 transitions, 852 flow [2022-11-23 04:12:04,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 111 transitions, 839 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-23 04:12:04,948 INFO L231 Difference]: Finished difference. Result has 62 places, 89 transitions, 561 flow [2022-11-23 04:12:04,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=561, PETRI_PLACES=62, PETRI_TRANSITIONS=89} [2022-11-23 04:12:04,949 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -39 predicate places. [2022-11-23 04:12:04,949 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 89 transitions, 561 flow [2022-11-23 04:12:04,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 04:12:04,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:04,950 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:04,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 04:12:04,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:12:04,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:04,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1138648209, now seen corresponding path program 1 times [2022-11-23 04:12:04,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:04,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364375488] [2022-11-23 04:12:04,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:04,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:05,228 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 04:12:05,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:05,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364375488] [2022-11-23 04:12:05,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364375488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:05,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:05,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 04:12:05,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634140095] [2022-11-23 04:12:05,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:05,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:12:05,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:05,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:12:05,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:12:05,234 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 395 [2022-11-23 04:12:05,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 89 transitions, 561 flow. Second operand has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 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 04:12:05,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:12:05,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 395 [2022-11-23 04:12:05,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:12:07,314 INFO L130 PetriNetUnfolder]: 7226/11490 cut-off events. [2022-11-23 04:12:07,314 INFO L131 PetriNetUnfolder]: For 12419/12515 co-relation queries the response was YES. [2022-11-23 04:12:07,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42353 conditions, 11490 events. 7226/11490 cut-off events. For 12419/12515 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 79404 event pairs, 2045 based on Foata normal form. 27/10070 useless extension candidates. Maximal degree in co-relation 42344. Up to 8072 conditions per place. [2022-11-23 04:12:07,375 INFO L137 encePairwiseOnDemand]: 392/395 looper letters, 105 selfloop transitions, 8 changer transitions 0/131 dead transitions. [2022-11-23 04:12:07,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 131 transitions, 1081 flow [2022-11-23 04:12:07,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:12:07,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:12:07,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-11-23 04:12:07,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3729957805907173 [2022-11-23 04:12:07,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-11-23 04:12:07,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-11-23 04:12:07,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:12:07,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-11-23 04:12:07,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 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 04:12:07,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:12:07,383 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:12:07,384 INFO L175 Difference]: Start difference. First operand has 62 places, 89 transitions, 561 flow. Second operand 3 states and 442 transitions. [2022-11-23 04:12:07,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 131 transitions, 1081 flow [2022-11-23 04:12:07,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 131 transitions, 1071 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 04:12:07,454 INFO L231 Difference]: Finished difference. Result has 64 places, 89 transitions, 582 flow [2022-11-23 04:12:07,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=582, PETRI_PLACES=64, PETRI_TRANSITIONS=89} [2022-11-23 04:12:07,455 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -37 predicate places. [2022-11-23 04:12:07,455 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 89 transitions, 582 flow [2022-11-23 04:12:07,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 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 04:12:07,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:07,456 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:07,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 04:12:07,456 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:12:07,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:07,457 INFO L85 PathProgramCache]: Analyzing trace with hash -938357780, now seen corresponding path program 1 times [2022-11-23 04:12:07,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:07,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373479031] [2022-11-23 04:12:07,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:07,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:08,872 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 04:12:08,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:08,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373479031] [2022-11-23 04:12:08,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373479031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:08,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:08,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 04:12:08,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246759136] [2022-11-23 04:12:08,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:08,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 04:12:08,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:08,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 04:12:08,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-23 04:12:09,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 395 [2022-11-23 04:12:09,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 89 transitions, 582 flow. Second operand has 7 states, 7 states have (on average 115.85714285714286) internal successors, (811), 7 states have internal predecessors, (811), 0 states have call successors, (0), 0 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 04:12:09,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:12:09,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 395 [2022-11-23 04:12:09,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:12:11,387 INFO L130 PetriNetUnfolder]: 7692/12080 cut-off events. [2022-11-23 04:12:11,387 INFO L131 PetriNetUnfolder]: For 10469/10469 co-relation queries the response was YES. [2022-11-23 04:12:11,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46217 conditions, 12080 events. 7692/12080 cut-off events. For 10469/10469 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 80687 event pairs, 3878 based on Foata normal form. 1/10697 useless extension candidates. Maximal degree in co-relation 46207. Up to 11450 conditions per place. [2022-11-23 04:12:11,456 INFO L137 encePairwiseOnDemand]: 385/395 looper letters, 110 selfloop transitions, 35 changer transitions 0/147 dead transitions. [2022-11-23 04:12:11,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 147 transitions, 1253 flow [2022-11-23 04:12:11,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 04:12:11,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 04:12:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 873 transitions. [2022-11-23 04:12:11,461 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.31573236889692585 [2022-11-23 04:12:11,461 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 873 transitions. [2022-11-23 04:12:11,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 873 transitions. [2022-11-23 04:12:11,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:12:11,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 873 transitions. [2022-11-23 04:12:11,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 0 states have call successors, (0), 0 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 04:12:11,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 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 04:12:11,470 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 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 04:12:11,470 INFO L175 Difference]: Start difference. First operand has 64 places, 89 transitions, 582 flow. Second operand 7 states and 873 transitions. [2022-11-23 04:12:11,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 147 transitions, 1253 flow [2022-11-23 04:12:11,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 147 transitions, 1229 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 04:12:11,511 INFO L231 Difference]: Finished difference. Result has 71 places, 122 transitions, 945 flow [2022-11-23 04:12:11,511 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=945, PETRI_PLACES=71, PETRI_TRANSITIONS=122} [2022-11-23 04:12:11,512 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -30 predicate places. [2022-11-23 04:12:11,512 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 122 transitions, 945 flow [2022-11-23 04:12:11,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.85714285714286) internal successors, (811), 7 states have internal predecessors, (811), 0 states have call successors, (0), 0 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 04:12:11,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:11,513 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:11,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 04:12:11,513 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:12:11,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:11,514 INFO L85 PathProgramCache]: Analyzing trace with hash -171989934, now seen corresponding path program 1 times [2022-11-23 04:12:11,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:11,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205932127] [2022-11-23 04:12:11,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:11,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:11,687 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 04:12:11,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:11,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205932127] [2022-11-23 04:12:11,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205932127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:11,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:11,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:12:11,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105885793] [2022-11-23 04:12:11,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:11,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 04:12:11,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:11,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 04:12:11,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:12:11,799 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 395 [2022-11-23 04:12:11,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 122 transitions, 945 flow. Second operand has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 0 states have call successors, (0), 0 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 04:12:11,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:12:11,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 395 [2022-11-23 04:12:11,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:12:14,151 INFO L130 PetriNetUnfolder]: 6369/10017 cut-off events. [2022-11-23 04:12:14,152 INFO L131 PetriNetUnfolder]: For 11281/11281 co-relation queries the response was YES. [2022-11-23 04:12:14,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39872 conditions, 10017 events. 6369/10017 cut-off events. For 11281/11281 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 63710 event pairs, 2640 based on Foata normal form. 122/9032 useless extension candidates. Maximal degree in co-relation 39859. Up to 3739 conditions per place. [2022-11-23 04:12:14,225 INFO L137 encePairwiseOnDemand]: 377/395 looper letters, 92 selfloop transitions, 45 changer transitions 0/139 dead transitions. [2022-11-23 04:12:14,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 139 transitions, 1286 flow [2022-11-23 04:12:14,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:12:14,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 04:12:14,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2022-11-23 04:12:14,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3468354430379747 [2022-11-23 04:12:14,229 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2022-11-23 04:12:14,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2022-11-23 04:12:14,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:12:14,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2022-11-23 04:12:14,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:14,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 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 04:12:14,237 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 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 04:12:14,237 INFO L175 Difference]: Start difference. First operand has 71 places, 122 transitions, 945 flow. Second operand 4 states and 548 transitions. [2022-11-23 04:12:14,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 139 transitions, 1286 flow [2022-11-23 04:12:14,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 139 transitions, 1272 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-11-23 04:12:14,360 INFO L231 Difference]: Finished difference. Result has 75 places, 122 transitions, 1043 flow [2022-11-23 04:12:14,360 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1043, PETRI_PLACES=75, PETRI_TRANSITIONS=122} [2022-11-23 04:12:14,361 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -26 predicate places. [2022-11-23 04:12:14,361 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 122 transitions, 1043 flow [2022-11-23 04:12:14,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 0 states have call successors, (0), 0 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 04:12:14,362 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:14,362 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:14,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 04:12:14,362 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:12:14,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:14,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1499503904, now seen corresponding path program 1 times [2022-11-23 04:12:14,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:14,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380504210] [2022-11-23 04:12:14,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:14,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:14,497 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 04:12:14,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:14,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380504210] [2022-11-23 04:12:14,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380504210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:14,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:14,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 04:12:14,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201442559] [2022-11-23 04:12:14,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:14,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:12:14,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:14,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:12:14,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:12:14,506 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 395 [2022-11-23 04:12:14,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 122 transitions, 1043 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:14,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:12:14,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 395 [2022-11-23 04:12:14,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:12:17,272 INFO L130 PetriNetUnfolder]: 8849/13783 cut-off events. [2022-11-23 04:12:17,272 INFO L131 PetriNetUnfolder]: For 26546/27464 co-relation queries the response was YES. [2022-11-23 04:12:17,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57152 conditions, 13783 events. 8849/13783 cut-off events. For 26546/27464 co-relation queries the response was YES. Maximal size of possible extension queue 891. Compared 97125 event pairs, 2859 based on Foata normal form. 182/11968 useless extension candidates. Maximal degree in co-relation 57137. Up to 7754 conditions per place. [2022-11-23 04:12:17,521 INFO L137 encePairwiseOnDemand]: 392/395 looper letters, 131 selfloop transitions, 3 changer transitions 0/165 dead transitions. [2022-11-23 04:12:17,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 165 transitions, 1612 flow [2022-11-23 04:12:17,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:12:17,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:12:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2022-11-23 04:12:17,528 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.37721518987341773 [2022-11-23 04:12:17,528 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2022-11-23 04:12:17,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2022-11-23 04:12:17,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:12:17,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2022-11-23 04:12:17,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 04:12:17,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:12:17,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:12:17,534 INFO L175 Difference]: Start difference. First operand has 75 places, 122 transitions, 1043 flow. Second operand 3 states and 447 transitions. [2022-11-23 04:12:17,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 165 transitions, 1612 flow [2022-11-23 04:12:17,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 165 transitions, 1603 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 04:12:17,684 INFO L231 Difference]: Finished difference. Result has 77 places, 122 transitions, 1048 flow [2022-11-23 04:12:17,685 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1048, PETRI_PLACES=77, PETRI_TRANSITIONS=122} [2022-11-23 04:12:17,687 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -24 predicate places. [2022-11-23 04:12:17,688 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 122 transitions, 1048 flow [2022-11-23 04:12:17,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:17,688 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:17,688 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:17,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 04:12:17,689 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:12:17,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:17,689 INFO L85 PathProgramCache]: Analyzing trace with hash -274113977, now seen corresponding path program 1 times [2022-11-23 04:12:17,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:17,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397662862] [2022-11-23 04:12:17,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:17,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:18,029 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 04:12:18,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:18,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397662862] [2022-11-23 04:12:18,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397662862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:18,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:18,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 04:12:18,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662052250] [2022-11-23 04:12:18,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:18,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:12:18,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:18,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:12:18,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:12:18,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 395 [2022-11-23 04:12:18,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 122 transitions, 1048 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 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 04:12:18,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:12:18,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 395 [2022-11-23 04:12:18,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:12:20,443 INFO L130 PetriNetUnfolder]: 7012/11345 cut-off events. [2022-11-23 04:12:20,443 INFO L131 PetriNetUnfolder]: For 18610/18998 co-relation queries the response was YES. [2022-11-23 04:12:20,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48163 conditions, 11345 events. 7012/11345 cut-off events. For 18610/18998 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 81362 event pairs, 3638 based on Foata normal form. 19/9828 useless extension candidates. Maximal degree in co-relation 48146. Up to 7995 conditions per place. [2022-11-23 04:12:20,528 INFO L137 encePairwiseOnDemand]: 392/395 looper letters, 94 selfloop transitions, 16 changer transitions 0/143 dead transitions. [2022-11-23 04:12:20,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 143 transitions, 1383 flow [2022-11-23 04:12:20,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:12:20,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:12:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2022-11-23 04:12:20,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3831223628691983 [2022-11-23 04:12:20,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2022-11-23 04:12:20,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2022-11-23 04:12:20,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:12:20,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2022-11-23 04:12:20,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 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 04:12:20,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:12:20,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 04:12:20,534 INFO L175 Difference]: Start difference. First operand has 77 places, 122 transitions, 1048 flow. Second operand 3 states and 454 transitions. [2022-11-23 04:12:20,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 143 transitions, 1383 flow [2022-11-23 04:12:20,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 143 transitions, 1378 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-23 04:12:20,703 INFO L231 Difference]: Finished difference. Result has 79 places, 122 transitions, 1093 flow [2022-11-23 04:12:20,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1093, PETRI_PLACES=79, PETRI_TRANSITIONS=122} [2022-11-23 04:12:20,703 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -22 predicate places. [2022-11-23 04:12:20,704 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 122 transitions, 1093 flow [2022-11-23 04:12:20,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 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 04:12:20,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:20,704 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:20,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 04:12:20,704 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:12:20,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:20,705 INFO L85 PathProgramCache]: Analyzing trace with hash -791283867, now seen corresponding path program 1 times [2022-11-23 04:12:20,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:20,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485972765] [2022-11-23 04:12:20,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:20,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:22,265 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 04:12:22,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:22,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485972765] [2022-11-23 04:12:22,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485972765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:22,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:22,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:12:22,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093133931] [2022-11-23 04:12:22,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:22,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 04:12:22,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:22,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 04:12:22,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:12:22,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 395 [2022-11-23 04:12:22,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 122 transitions, 1093 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 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 04:12:22,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:12:22,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 395 [2022-11-23 04:12:22,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:12:24,867 INFO L130 PetriNetUnfolder]: 8848/13872 cut-off events. [2022-11-23 04:12:24,867 INFO L131 PetriNetUnfolder]: For 23640/23688 co-relation queries the response was YES. [2022-11-23 04:12:24,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59753 conditions, 13872 events. 8848/13872 cut-off events. For 23640/23688 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 96842 event pairs, 4709 based on Foata normal form. 33/12389 useless extension candidates. Maximal degree in co-relation 59735. Up to 11494 conditions per place. [2022-11-23 04:12:24,986 INFO L137 encePairwiseOnDemand]: 387/395 looper letters, 128 selfloop transitions, 56 changer transitions 0/188 dead transitions. [2022-11-23 04:12:24,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 188 transitions, 2063 flow [2022-11-23 04:12:24,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:12:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 04:12:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2022-11-23 04:12:24,993 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3493670886075949 [2022-11-23 04:12:24,993 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 552 transitions. [2022-11-23 04:12:24,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 552 transitions. [2022-11-23 04:12:24,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:12:24,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 552 transitions. [2022-11-23 04:12:24,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:24,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 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 04:12:24,998 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 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 04:12:24,999 INFO L175 Difference]: Start difference. First operand has 79 places, 122 transitions, 1093 flow. Second operand 4 states and 552 transitions. [2022-11-23 04:12:24,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 188 transitions, 2063 flow [2022-11-23 04:12:25,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 188 transitions, 2009 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-23 04:12:25,130 INFO L231 Difference]: Finished difference. Result has 81 places, 155 transitions, 1610 flow [2022-11-23 04:12:25,130 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1059, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1610, PETRI_PLACES=81, PETRI_TRANSITIONS=155} [2022-11-23 04:12:25,130 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -20 predicate places. [2022-11-23 04:12:25,130 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 155 transitions, 1610 flow [2022-11-23 04:12:25,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 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 04:12:25,131 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:25,131 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:25,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 04:12:25,131 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:12:25,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:25,132 INFO L85 PathProgramCache]: Analyzing trace with hash 892796065, now seen corresponding path program 2 times [2022-11-23 04:12:25,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:25,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502872221] [2022-11-23 04:12:25,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:25,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:25,951 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 04:12:25,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:25,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502872221] [2022-11-23 04:12:25,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502872221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:25,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:25,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 04:12:25,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898137590] [2022-11-23 04:12:25,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:25,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 04:12:25,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:25,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 04:12:25,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 04:12:26,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 395 [2022-11-23 04:12:26,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 155 transitions, 1610 flow. Second operand has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 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 04:12:26,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:12:26,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 395 [2022-11-23 04:12:26,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:12:30,576 INFO L130 PetriNetUnfolder]: 13940/21852 cut-off events. [2022-11-23 04:12:30,576 INFO L131 PetriNetUnfolder]: For 42806/42853 co-relation queries the response was YES. [2022-11-23 04:12:30,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100838 conditions, 21852 events. 13940/21852 cut-off events. For 42806/42853 co-relation queries the response was YES. Maximal size of possible extension queue 1534. Compared 164187 event pairs, 4397 based on Foata normal form. 55/19333 useless extension candidates. Maximal degree in co-relation 100819. Up to 11538 conditions per place. [2022-11-23 04:12:30,736 INFO L137 encePairwiseOnDemand]: 386/395 looper letters, 233 selfloop transitions, 23 changer transitions 0/258 dead transitions. [2022-11-23 04:12:30,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 258 transitions, 3059 flow [2022-11-23 04:12:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 04:12:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 04:12:30,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 880 transitions. [2022-11-23 04:12:30,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3182640144665461 [2022-11-23 04:12:30,739 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 880 transitions. [2022-11-23 04:12:30,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 880 transitions. [2022-11-23 04:12:30,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:12:30,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 880 transitions. [2022-11-23 04:12:30,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.71428571428571) internal successors, (880), 7 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:12:30,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 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 04:12:30,748 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 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 04:12:30,748 INFO L175 Difference]: Start difference. First operand has 81 places, 155 transitions, 1610 flow. Second operand 7 states and 880 transitions. [2022-11-23 04:12:30,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 258 transitions, 3059 flow [2022-11-23 04:12:31,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 258 transitions, 2987 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 04:12:31,169 INFO L231 Difference]: Finished difference. Result has 88 places, 165 transitions, 1742 flow [2022-11-23 04:12:31,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1742, PETRI_PLACES=88, PETRI_TRANSITIONS=165} [2022-11-23 04:12:31,170 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -13 predicate places. [2022-11-23 04:12:31,170 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 165 transitions, 1742 flow [2022-11-23 04:12:31,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 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 04:12:31,171 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:31,171 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:31,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 04:12:31,171 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:12:31,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:31,172 INFO L85 PathProgramCache]: Analyzing trace with hash 975677665, now seen corresponding path program 3 times [2022-11-23 04:12:31,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:31,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492737433] [2022-11-23 04:12:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:31,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:32,266 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 04:12:32,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:32,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492737433] [2022-11-23 04:12:32,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492737433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:32,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:32,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 04:12:32,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797570025] [2022-11-23 04:12:32,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:32,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 04:12:32,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:32,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 04:12:32,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-23 04:12:32,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 395 [2022-11-23 04:12:32,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 165 transitions, 1742 flow. Second operand has 9 states, 9 states have (on average 114.55555555555556) internal successors, (1031), 9 states have internal predecessors, (1031), 0 states have call successors, (0), 0 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 04:12:32,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:12:32,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 395 [2022-11-23 04:12:32,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:12:38,625 INFO L130 PetriNetUnfolder]: 17236/27279 cut-off events. [2022-11-23 04:12:38,625 INFO L131 PetriNetUnfolder]: For 57620/57678 co-relation queries the response was YES. [2022-11-23 04:12:38,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126238 conditions, 27279 events. 17236/27279 cut-off events. For 57620/57678 co-relation queries the response was YES. Maximal size of possible extension queue 1967. Compared 216498 event pairs, 3687 based on Foata normal form. 99/24162 useless extension candidates. Maximal degree in co-relation 126216. Up to 13261 conditions per place. [2022-11-23 04:12:38,826 INFO L137 encePairwiseOnDemand]: 384/395 looper letters, 252 selfloop transitions, 80 changer transitions 0/334 dead transitions. [2022-11-23 04:12:38,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 334 transitions, 3900 flow [2022-11-23 04:12:38,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 04:12:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 04:12:38,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1134 transitions. [2022-11-23 04:12:38,831 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3189873417721519 [2022-11-23 04:12:38,831 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1134 transitions. [2022-11-23 04:12:38,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1134 transitions. [2022-11-23 04:12:38,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:12:38,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1134 transitions. [2022-11-23 04:12:38,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.0) internal successors, (1134), 9 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 04:12:38,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 395.0) internal successors, (3950), 10 states have internal predecessors, (3950), 0 states have call successors, (0), 0 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 04:12:38,840 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 395.0) internal successors, (3950), 10 states have internal predecessors, (3950), 0 states have call successors, (0), 0 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 04:12:38,841 INFO L175 Difference]: Start difference. First operand has 88 places, 165 transitions, 1742 flow. Second operand 9 states and 1134 transitions. [2022-11-23 04:12:38,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 334 transitions, 3900 flow [2022-11-23 04:12:39,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 334 transitions, 3866 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-23 04:12:39,489 INFO L231 Difference]: Finished difference. Result has 99 places, 199 transitions, 2430 flow [2022-11-23 04:12:39,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2430, PETRI_PLACES=99, PETRI_TRANSITIONS=199} [2022-11-23 04:12:39,490 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, -2 predicate places. [2022-11-23 04:12:39,490 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 199 transitions, 2430 flow [2022-11-23 04:12:39,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.55555555555556) internal successors, (1031), 9 states have internal predecessors, (1031), 0 states have call successors, (0), 0 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 04:12:39,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:39,491 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:39,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 04:12:39,491 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:12:39,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:39,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1036717884, now seen corresponding path program 1 times [2022-11-23 04:12:39,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:39,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517817100] [2022-11-23 04:12:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:39,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:39,783 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 04:12:39,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:39,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517817100] [2022-11-23 04:12:39,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517817100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:39,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:39,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 04:12:39,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94818999] [2022-11-23 04:12:39,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:39,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 04:12:39,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:39,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 04:12:39,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-23 04:12:40,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 395 [2022-11-23 04:12:40,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 199 transitions, 2430 flow. Second operand has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 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 04:12:40,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:12:40,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 395 [2022-11-23 04:12:40,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:12:45,088 INFO L130 PetriNetUnfolder]: 13294/21945 cut-off events. [2022-11-23 04:12:45,088 INFO L131 PetriNetUnfolder]: For 68225/68247 co-relation queries the response was YES. [2022-11-23 04:12:45,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102122 conditions, 21945 events. 13294/21945 cut-off events. For 68225/68247 co-relation queries the response was YES. Maximal size of possible extension queue 1567. Compared 178606 event pairs, 4478 based on Foata normal form. 338/20700 useless extension candidates. Maximal degree in co-relation 102094. Up to 8271 conditions per place. [2022-11-23 04:12:45,291 INFO L137 encePairwiseOnDemand]: 376/395 looper letters, 175 selfloop transitions, 60 changer transitions 0/237 dead transitions. [2022-11-23 04:12:45,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 237 transitions, 3253 flow [2022-11-23 04:12:45,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 04:12:45,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 04:12:45,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 659 transitions. [2022-11-23 04:12:45,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.33367088607594936 [2022-11-23 04:12:45,295 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 659 transitions. [2022-11-23 04:12:45,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 659 transitions. [2022-11-23 04:12:45,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:12:45,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 659 transitions. [2022-11-23 04:12:45,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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 04:12:45,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 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 04:12:45,301 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 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 04:12:45,301 INFO L175 Difference]: Start difference. First operand has 99 places, 199 transitions, 2430 flow. Second operand 5 states and 659 transitions. [2022-11-23 04:12:45,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 237 transitions, 3253 flow [2022-11-23 04:12:45,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 237 transitions, 3209 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-11-23 04:12:45,773 INFO L231 Difference]: Finished difference. Result has 103 places, 215 transitions, 2881 flow [2022-11-23 04:12:45,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2881, PETRI_PLACES=103, PETRI_TRANSITIONS=215} [2022-11-23 04:12:45,778 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, 2 predicate places. [2022-11-23 04:12:45,778 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 215 transitions, 2881 flow [2022-11-23 04:12:45,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 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 04:12:45,779 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:45,780 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:45,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 04:12:45,780 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:12:45,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:45,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1036717824, now seen corresponding path program 1 times [2022-11-23 04:12:45,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:45,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766418848] [2022-11-23 04:12:45,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:45,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:46,631 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 04:12:46,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:46,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766418848] [2022-11-23 04:12:46,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766418848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:46,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:46,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 04:12:46,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911153004] [2022-11-23 04:12:46,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:46,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 04:12:46,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:46,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 04:12:46,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-23 04:12:47,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 395 [2022-11-23 04:12:47,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 215 transitions, 2881 flow. Second operand has 9 states, 9 states have (on average 119.55555555555556) internal successors, (1076), 9 states have internal predecessors, (1076), 0 states have call successors, (0), 0 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 04:12:47,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:12:47,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 395 [2022-11-23 04:12:47,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:12:52,175 INFO L130 PetriNetUnfolder]: 8791/15003 cut-off events. [2022-11-23 04:12:52,175 INFO L131 PetriNetUnfolder]: For 61363/61717 co-relation queries the response was YES. [2022-11-23 04:12:52,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72549 conditions, 15003 events. 8791/15003 cut-off events. For 61363/61717 co-relation queries the response was YES. Maximal size of possible extension queue 1013. Compared 120144 event pairs, 1266 based on Foata normal form. 4/14613 useless extension candidates. Maximal degree in co-relation 72520. Up to 5292 conditions per place. [2022-11-23 04:12:52,335 INFO L137 encePairwiseOnDemand]: 387/395 looper letters, 151 selfloop transitions, 49 changer transitions 0/276 dead transitions. [2022-11-23 04:12:52,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 276 transitions, 3637 flow [2022-11-23 04:12:52,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 04:12:52,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 04:12:52,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1138 transitions. [2022-11-23 04:12:52,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.320112517580872 [2022-11-23 04:12:52,341 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1138 transitions. [2022-11-23 04:12:52,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1138 transitions. [2022-11-23 04:12:52,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:12:52,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1138 transitions. [2022-11-23 04:12:52,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.44444444444444) internal successors, (1138), 9 states have internal predecessors, (1138), 0 states have call successors, (0), 0 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 04:12:52,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 395.0) internal successors, (3950), 10 states have internal predecessors, (3950), 0 states have call successors, (0), 0 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 04:12:52,351 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 395.0) internal successors, (3950), 10 states have internal predecessors, (3950), 0 states have call successors, (0), 0 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 04:12:52,351 INFO L175 Difference]: Start difference. First operand has 103 places, 215 transitions, 2881 flow. Second operand 9 states and 1138 transitions. [2022-11-23 04:12:52,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 276 transitions, 3637 flow [2022-11-23 04:12:53,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 276 transitions, 3562 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-23 04:12:53,419 INFO L231 Difference]: Finished difference. Result has 109 places, 220 transitions, 2975 flow [2022-11-23 04:12:53,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2676, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2975, PETRI_PLACES=109, PETRI_TRANSITIONS=220} [2022-11-23 04:12:53,419 INFO L288 CegarLoopForPetriNet]: 101 programPoint places, 8 predicate places. [2022-11-23 04:12:53,420 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 220 transitions, 2975 flow [2022-11-23 04:12:53,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.55555555555556) internal successors, (1076), 9 states have internal predecessors, (1076), 0 states have call successors, (0), 0 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 04:12:53,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:12:53,420 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:12:53,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 04:12:53,420 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 106 more)] === [2022-11-23 04:12:53,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:12:53,421 INFO L85 PathProgramCache]: Analyzing trace with hash 266453874, now seen corresponding path program 1 times [2022-11-23 04:12:53,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:12:53,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894131550] [2022-11-23 04:12:53,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:12:53,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:12:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:12:56,753 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 04:12:56,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:12:56,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894131550] [2022-11-23 04:12:56,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894131550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:12:56,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:12:56,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 04:12:56,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338386638] [2022-11-23 04:12:56,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:12:56,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 04:12:56,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:12:56,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 04:12:56,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 04:12:56,897 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 395 [2022-11-23 04:12:56,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 220 transitions, 2975 flow. Second operand has 7 states, 7 states have (on average 126.14285714285714) internal successors, (883), 7 states have internal predecessors, (883), 0 states have call successors, (0), 0 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 04:12:56,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:12:56,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 395 [2022-11-23 04:12:56,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand