./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:28:29,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:28:29,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:28:29,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:28:29,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:28:29,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:28:29,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:28:29,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:28:29,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:28:29,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:28:29,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:28:29,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:28:29,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:28:29,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:28:29,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:28:29,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:28:29,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:28:29,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:28:29,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:28:29,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:28:29,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:28:29,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:28:29,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:28:29,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:28:29,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:28:29,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:28:29,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:28:29,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:28:29,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:28:29,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:28:29,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:28:29,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:28:29,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:28:29,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:28:29,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:28:29,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:28:29,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:28:29,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:28:29,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:28:29,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:28:29,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:28:29,119 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 13:28:29,133 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:28:29,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:28:29,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:28:29,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:28:29,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:28:29,134 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:28:29,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:28:29,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:28:29,134 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:28:29,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:28:29,134 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:28:29,134 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:28:29,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:28:29,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:28:29,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:28:29,135 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 13:28:29,135 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 13:28:29,135 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 13:28:29,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:28:29,135 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 13:28:29,135 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:28:29,135 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:28:29,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:28:29,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:28:29,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:28:29,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:28:29,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:28:29,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:28:29,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:28:29,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:28:29,136 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:28:29,136 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:28:29,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:28:29,136 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:28:29,137 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_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 [2022-12-13 13:28:29,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:28:29,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:28:29,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:28:29,322 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:28:29,323 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:28:29,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2022-12-13 13:28:32,027 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:28:32,224 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:28:32,225 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2022-12-13 13:28:32,234 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8/data/05eb995c5/0cebe75eda1341d78b53479df7caf0a3/FLAG9f1e309b7 [2022-12-13 13:28:32,245 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8/data/05eb995c5/0cebe75eda1341d78b53479df7caf0a3 [2022-12-13 13:28:32,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:28:32,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:28:32,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:28:32,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:28:32,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:28:32,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:28:32" (1/1) ... [2022-12-13 13:28:32,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53be1ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:32, skipping insertion in model container [2022-12-13 13:28:32,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:28:32" (1/1) ... [2022-12-13 13:28:32,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:28:32,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:28:32,399 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_12208a6e-376c-4e5d-bf15-e0998bf70dd5/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2022-12-13 13:28:32,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:28:32,500 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:28:32,509 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_12208a6e-376c-4e5d-bf15-e0998bf70dd5/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2022-12-13 13:28:32,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:28:32,551 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:28:32,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:32 WrapperNode [2022-12-13 13:28:32,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:28:32,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:28:32,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:28:32,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:28:32,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:32" (1/1) ... [2022-12-13 13:28:32,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:32" (1/1) ... [2022-12-13 13:28:32,582 INFO L138 Inliner]: procedures = 163, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 104 [2022-12-13 13:28:32,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:28:32,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:28:32,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:28:32,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:28:32,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:32" (1/1) ... [2022-12-13 13:28:32,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:32" (1/1) ... [2022-12-13 13:28:32,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:32" (1/1) ... [2022-12-13 13:28:32,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:32" (1/1) ... [2022-12-13 13:28:32,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:32" (1/1) ... [2022-12-13 13:28:32,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:32" (1/1) ... [2022-12-13 13:28:32,598 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:32" (1/1) ... [2022-12-13 13:28:32,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:32" (1/1) ... [2022-12-13 13:28:32,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:28:32,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:28:32,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:28:32,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:28:32,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:32" (1/1) ... [2022-12-13 13:28:32,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:28:32,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:28:32,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:28:32,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:28:32,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:28:32,660 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-13 13:28:32,660 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-13 13:28:32,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:28:32,660 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 13:28:32,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:28:32,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:28:32,661 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 13:28:32,661 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 13:28:32,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:28:32,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:28:32,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:28:32,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:28:32,663 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 13:28:32,763 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:28:32,764 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:28:32,967 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:28:32,975 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:28:32,975 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 13:28:32,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:28:32 BoogieIcfgContainer [2022-12-13 13:28:32,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:28:32,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:28:32,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:28:32,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:28:32,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:28:32" (1/3) ... [2022-12-13 13:28:32,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd9e945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:28:32, skipping insertion in model container [2022-12-13 13:28:32,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:28:32" (2/3) ... [2022-12-13 13:28:32,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd9e945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:28:32, skipping insertion in model container [2022-12-13 13:28:32,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:28:32" (3/3) ... [2022-12-13 13:28:32,986 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2022-12-13 13:28:33,005 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:28:33,005 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-12-13 13:28:33,006 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:28:33,090 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 13:28:33,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 171 transitions, 358 flow [2022-12-13 13:28:33,175 INFO L130 PetriNetUnfolder]: 4/169 cut-off events. [2022-12-13 13:28:33,175 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:28:33,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 169 events. 4/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 161 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 109. Up to 2 conditions per place. [2022-12-13 13:28:33,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 171 transitions, 358 flow [2022-12-13 13:28:33,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 164 transitions, 340 flow [2022-12-13 13:28:33,187 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:28:33,195 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 164 transitions, 340 flow [2022-12-13 13:28:33,197 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 164 transitions, 340 flow [2022-12-13 13:28:33,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 164 transitions, 340 flow [2022-12-13 13:28:33,227 INFO L130 PetriNetUnfolder]: 4/164 cut-off events. [2022-12-13 13:28:33,227 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:28:33,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 164 events. 4/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 160 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 109. Up to 2 conditions per place. [2022-12-13 13:28:33,230 INFO L119 LiptonReduction]: Number of co-enabled transitions 5652 [2022-12-13 13:28:36,923 INFO L134 LiptonReduction]: Checked pairs total: 17986 [2022-12-13 13:28:36,923 INFO L136 LiptonReduction]: Total number of compositions: 148 [2022-12-13 13:28:36,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:28:36,941 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;@2ae03ec7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:28:36,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-13 13:28:36,942 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 13:28:36,942 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:28:36,942 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:36,943 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 13:28:36,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:28:36,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:36,947 INFO L85 PathProgramCache]: Analyzing trace with hash 578, now seen corresponding path program 1 times [2022-12-13 13:28:36,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:36,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115115447] [2022-12-13 13:28:36,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:36,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:37,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:37,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115115447] [2022-12-13 13:28:37,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115115447] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:37,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:37,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 13:28:37,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320311238] [2022-12-13 13:28:37,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:37,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:28:37,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:37,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:28:37,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:28:37,058 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 319 [2022-12-13 13:28:37,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 128 flow. Second operand has 2 states, 2 states have (on average 159.5) internal successors, (319), 2 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:37,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:37,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 319 [2022-12-13 13:28:37,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:37,445 INFO L130 PetriNetUnfolder]: 3037/4932 cut-off events. [2022-12-13 13:28:37,445 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-13 13:28:37,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9800 conditions, 4932 events. 3037/4932 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 25569 event pairs, 3037 based on Foata normal form. 144/4457 useless extension candidates. Maximal degree in co-relation 9640. Up to 4837 conditions per place. [2022-12-13 13:28:37,464 INFO L137 encePairwiseOnDemand]: 314/319 looper letters, 48 selfloop transitions, 0 changer transitions 2/52 dead transitions. [2022-12-13 13:28:37,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 52 transitions, 216 flow [2022-12-13 13:28:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:28:37,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 13:28:37,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 373 transitions. [2022-12-13 13:28:37,475 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5846394984326019 [2022-12-13 13:28:37,475 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 373 transitions. [2022-12-13 13:28:37,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 373 transitions. [2022-12-13 13:28:37,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:37,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 373 transitions. [2022-12-13 13:28:37,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 186.5) internal successors, (373), 2 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:37,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:37,486 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:37,487 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 128 flow. Second operand 2 states and 373 transitions. [2022-12-13 13:28:37,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 52 transitions, 216 flow [2022-12-13 13:28:37,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 13:28:37,492 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 104 flow [2022-12-13 13:28:37,494 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2022-12-13 13:28:37,497 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2022-12-13 13:28:37,497 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 104 flow [2022-12-13 13:28:37,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 159.5) internal successors, (319), 2 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:37,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:37,497 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 13:28:37,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:28:37,497 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:28:37,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:37,498 INFO L85 PathProgramCache]: Analyzing trace with hash 569306, now seen corresponding path program 1 times [2022-12-13 13:28:37,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:37,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631590095] [2022-12-13 13:28:37,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:37,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:37,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:37,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631590095] [2022-12-13 13:28:37,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631590095] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:37,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:37,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:28:37,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96647242] [2022-12-13 13:28:37,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:37,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:28:37,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:37,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:28:37,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:28:37,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 319 [2022-12-13 13:28:37,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:37,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:37,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 319 [2022-12-13 13:28:37,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:38,030 INFO L130 PetriNetUnfolder]: 2768/4501 cut-off events. [2022-12-13 13:28:38,030 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:28:38,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8919 conditions, 4501 events. 2768/4501 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 22991 event pairs, 2768 based on Foata normal form. 0/4043 useless extension candidates. Maximal degree in co-relation 8916. Up to 4405 conditions per place. [2022-12-13 13:28:38,049 INFO L137 encePairwiseOnDemand]: 315/319 looper letters, 44 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2022-12-13 13:28:38,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 192 flow [2022-12-13 13:28:38,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:28:38,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:28:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2022-12-13 13:28:38,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5203761755485894 [2022-12-13 13:28:38,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2022-12-13 13:28:38,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2022-12-13 13:28:38,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:38,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2022-12-13 13:28:38,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:38,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:38,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:38,057 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 104 flow. Second operand 3 states and 498 transitions. [2022-12-13 13:28:38,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 192 flow [2022-12-13 13:28:38,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:28:38,058 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 104 flow [2022-12-13 13:28:38,058 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2022-12-13 13:28:38,059 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2022-12-13 13:28:38,059 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 104 flow [2022-12-13 13:28:38,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:38,059 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:38,060 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 13:28:38,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:28:38,060 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:28:38,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:38,060 INFO L85 PathProgramCache]: Analyzing trace with hash 569308, now seen corresponding path program 1 times [2022-12-13 13:28:38,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:38,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617750311] [2022-12-13 13:28:38,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:38,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:38,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:38,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617750311] [2022-12-13 13:28:38,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617750311] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:38,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:38,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:28:38,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340700939] [2022-12-13 13:28:38,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:38,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:28:38,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:38,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:28:38,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:28:38,175 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 319 [2022-12-13 13:28:38,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:38,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:38,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 319 [2022-12-13 13:28:38,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:38,476 INFO L130 PetriNetUnfolder]: 2753/4468 cut-off events. [2022-12-13 13:28:38,476 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:28:38,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8857 conditions, 4468 events. 2753/4468 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 22774 event pairs, 2753 based on Foata normal form. 0/4027 useless extension candidates. Maximal degree in co-relation 8853. Up to 4373 conditions per place. [2022-12-13 13:28:38,490 INFO L137 encePairwiseOnDemand]: 315/319 looper letters, 42 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2022-12-13 13:28:38,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 188 flow [2022-12-13 13:28:38,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:28:38,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:28:38,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2022-12-13 13:28:38,493 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5308254963427377 [2022-12-13 13:28:38,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2022-12-13 13:28:38,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2022-12-13 13:28:38,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:38,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2022-12-13 13:28:38,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:38,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:38,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:38,497 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 104 flow. Second operand 3 states and 508 transitions. [2022-12-13 13:28:38,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 188 flow [2022-12-13 13:28:38,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:28:38,498 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 100 flow [2022-12-13 13:28:38,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2022-12-13 13:28:38,499 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2022-12-13 13:28:38,499 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 100 flow [2022-12-13 13:28:38,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:38,499 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:38,499 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:38,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:28:38,499 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:28:38,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:38,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1793274348, now seen corresponding path program 1 times [2022-12-13 13:28:38,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:38,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062142468] [2022-12-13 13:28:38,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:38,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:38,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:38,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062142468] [2022-12-13 13:28:38,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062142468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:38,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:38,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:28:38,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994414512] [2022-12-13 13:28:38,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:38,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:28:38,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:38,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:28:38,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:28:38,576 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 319 [2022-12-13 13:28:38,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:38,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:38,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 319 [2022-12-13 13:28:38,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:38,996 INFO L130 PetriNetUnfolder]: 3394/5451 cut-off events. [2022-12-13 13:28:38,996 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:28:39,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10892 conditions, 5451 events. 3394/5451 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 29367 event pairs, 1167 based on Foata normal form. 0/4938 useless extension candidates. Maximal degree in co-relation 10888. Up to 3403 conditions per place. [2022-12-13 13:28:39,013 INFO L137 encePairwiseOnDemand]: 312/319 looper letters, 78 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2022-12-13 13:28:39,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 343 flow [2022-12-13 13:28:39,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:28:39,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:28:39,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2022-12-13 13:28:39,014 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5778474399164054 [2022-12-13 13:28:39,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 553 transitions. [2022-12-13 13:28:39,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 553 transitions. [2022-12-13 13:28:39,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:39,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 553 transitions. [2022-12-13 13:28:39,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:39,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:39,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:39,017 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 100 flow. Second operand 3 states and 553 transitions. [2022-12-13 13:28:39,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 343 flow [2022-12-13 13:28:39,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 83 transitions, 337 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:28:39,019 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 126 flow [2022-12-13 13:28:39,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2022-12-13 13:28:39,019 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2022-12-13 13:28:39,020 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 126 flow [2022-12-13 13:28:39,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:39,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:39,020 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:39,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:28:39,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:28:39,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:39,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1224617792, now seen corresponding path program 1 times [2022-12-13 13:28:39,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:39,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553021042] [2022-12-13 13:28:39,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:39,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:39,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:39,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553021042] [2022-12-13 13:28:39,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553021042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:39,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:39,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:28:39,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367381972] [2022-12-13 13:28:39,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:39,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:28:39,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:39,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:28:39,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:28:39,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 319 [2022-12-13 13:28:39,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 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) [2022-12-13 13:28:39,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:39,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 319 [2022-12-13 13:28:39,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:39,522 INFO L130 PetriNetUnfolder]: 1925/3505 cut-off events. [2022-12-13 13:28:39,522 INFO L131 PetriNetUnfolder]: For 382/382 co-relation queries the response was YES. [2022-12-13 13:28:39,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7507 conditions, 3505 events. 1925/3505 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 20825 event pairs, 724 based on Foata normal form. 162/3363 useless extension candidates. Maximal degree in co-relation 7502. Up to 1815 conditions per place. [2022-12-13 13:28:39,534 INFO L137 encePairwiseOnDemand]: 310/319 looper letters, 75 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2022-12-13 13:28:39,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 387 flow [2022-12-13 13:28:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:28:39,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:28:39,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 692 transitions. [2022-12-13 13:28:39,536 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.542319749216301 [2022-12-13 13:28:39,536 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 692 transitions. [2022-12-13 13:28:39,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 692 transitions. [2022-12-13 13:28:39,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:39,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 692 transitions. [2022-12-13 13:28:39,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:39,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:39,541 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:39,542 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 126 flow. Second operand 4 states and 692 transitions. [2022-12-13 13:28:39,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 387 flow [2022-12-13 13:28:39,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:28:39,546 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 168 flow [2022-12-13 13:28:39,546 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2022-12-13 13:28:39,546 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2022-12-13 13:28:39,547 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 168 flow [2022-12-13 13:28:39,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 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) [2022-12-13 13:28:39,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:39,547 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:39,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:28:39,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:28:39,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:39,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2110665396, now seen corresponding path program 1 times [2022-12-13 13:28:39,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:39,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316172050] [2022-12-13 13:28:39,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:39,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:39,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:39,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316172050] [2022-12-13 13:28:39,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316172050] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:39,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:39,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:28:39,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563950818] [2022-12-13 13:28:39,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:39,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:28:39,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:39,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:28:39,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:28:39,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 319 [2022-12-13 13:28:39,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:39,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:39,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 319 [2022-12-13 13:28:39,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:39,918 INFO L130 PetriNetUnfolder]: 1903/3426 cut-off events. [2022-12-13 13:28:39,918 INFO L131 PetriNetUnfolder]: For 591/591 co-relation queries the response was YES. [2022-12-13 13:28:39,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8526 conditions, 3426 events. 1903/3426 cut-off events. For 591/591 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 20634 event pairs, 500 based on Foata normal form. 0/3062 useless extension candidates. Maximal degree in co-relation 8520. Up to 2440 conditions per place. [2022-12-13 13:28:39,927 INFO L137 encePairwiseOnDemand]: 316/319 looper letters, 82 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2022-12-13 13:28:39,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 88 transitions, 443 flow [2022-12-13 13:28:39,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:28:39,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:28:39,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 542 transitions. [2022-12-13 13:28:39,929 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5663531870428422 [2022-12-13 13:28:39,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 542 transitions. [2022-12-13 13:28:39,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 542 transitions. [2022-12-13 13:28:39,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:39,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 542 transitions. [2022-12-13 13:28:39,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:39,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:39,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:39,934 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 168 flow. Second operand 3 states and 542 transitions. [2022-12-13 13:28:39,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 88 transitions, 443 flow [2022-12-13 13:28:39,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 88 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:28:39,937 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 175 flow [2022-12-13 13:28:39,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2022-12-13 13:28:39,938 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2022-12-13 13:28:39,938 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 175 flow [2022-12-13 13:28:39,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:39,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:39,938 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:39,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:28:39,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:28:39,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:39,939 INFO L85 PathProgramCache]: Analyzing trace with hash -682151646, now seen corresponding path program 1 times [2022-12-13 13:28:39,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:39,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054080409] [2022-12-13 13:28:39,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:39,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:40,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:40,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:40,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054080409] [2022-12-13 13:28:40,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054080409] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:40,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:40,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:28:40,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16572573] [2022-12-13 13:28:40,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:40,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:28:40,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:40,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:28:40,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:28:40,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 319 [2022-12-13 13:28:40,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:40,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:40,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 319 [2022-12-13 13:28:40,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:40,398 INFO L130 PetriNetUnfolder]: 1774/3233 cut-off events. [2022-12-13 13:28:40,398 INFO L131 PetriNetUnfolder]: For 615/615 co-relation queries the response was YES. [2022-12-13 13:28:40,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8373 conditions, 3233 events. 1774/3233 cut-off events. For 615/615 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 18888 event pairs, 935 based on Foata normal form. 24/3023 useless extension candidates. Maximal degree in co-relation 8366. Up to 1933 conditions per place. [2022-12-13 13:28:40,407 INFO L137 encePairwiseOnDemand]: 310/319 looper letters, 143 selfloop transitions, 5 changer transitions 0/150 dead transitions. [2022-12-13 13:28:40,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 150 transitions, 756 flow [2022-12-13 13:28:40,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:28:40,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:28:40,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1062 transitions. [2022-12-13 13:28:40,409 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.554858934169279 [2022-12-13 13:28:40,409 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1062 transitions. [2022-12-13 13:28:40,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1062 transitions. [2022-12-13 13:28:40,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:40,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1062 transitions. [2022-12-13 13:28:40,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:40,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:40,413 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:40,413 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 175 flow. Second operand 6 states and 1062 transitions. [2022-12-13 13:28:40,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 150 transitions, 756 flow [2022-12-13 13:28:40,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 150 transitions, 746 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:28:40,416 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 202 flow [2022-12-13 13:28:40,416 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2022-12-13 13:28:40,417 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, 3 predicate places. [2022-12-13 13:28:40,417 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 202 flow [2022-12-13 13:28:40,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:40,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:40,417 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:40,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:28:40,417 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:28:40,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:40,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1357159550, now seen corresponding path program 1 times [2022-12-13 13:28:40,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:40,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400808009] [2022-12-13 13:28:40,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:40,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:40,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:40,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400808009] [2022-12-13 13:28:40,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400808009] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:40,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:40,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:28:40,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29831220] [2022-12-13 13:28:40,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:40,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:28:40,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:40,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:28:40,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:28:40,493 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 319 [2022-12-13 13:28:40,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 202 flow. Second operand has 3 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) [2022-12-13 13:28:40,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:40,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 319 [2022-12-13 13:28:40,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:40,785 INFO L130 PetriNetUnfolder]: 1673/3429 cut-off events. [2022-12-13 13:28:40,785 INFO L131 PetriNetUnfolder]: For 2403/2413 co-relation queries the response was YES. [2022-12-13 13:28:40,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10112 conditions, 3429 events. 1673/3429 cut-off events. For 2403/2413 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 22897 event pairs, 642 based on Foata normal form. 322/3465 useless extension candidates. Maximal degree in co-relation 10101. Up to 2213 conditions per place. [2022-12-13 13:28:40,795 INFO L137 encePairwiseOnDemand]: 297/319 looper letters, 64 selfloop transitions, 27 changer transitions 0/92 dead transitions. [2022-12-13 13:28:40,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 92 transitions, 537 flow [2022-12-13 13:28:40,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:28:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:28:40,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-12-13 13:28:40,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.522466039707419 [2022-12-13 13:28:40,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-12-13 13:28:40,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-12-13 13:28:40,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:40,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-12-13 13:28:40,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:40,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:40,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:40,800 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 202 flow. Second operand 3 states and 500 transitions. [2022-12-13 13:28:40,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 92 transitions, 537 flow [2022-12-13 13:28:40,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 92 transitions, 523 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 13:28:40,808 INFO L231 Difference]: Finished difference. Result has 63 places, 72 transitions, 379 flow [2022-12-13 13:28:40,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=63, PETRI_TRANSITIONS=72} [2022-12-13 13:28:40,809 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, 1 predicate places. [2022-12-13 13:28:40,809 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 72 transitions, 379 flow [2022-12-13 13:28:40,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-12-13 13:28:40,810 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:40,810 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:40,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:28:40,810 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:28:40,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:40,811 INFO L85 PathProgramCache]: Analyzing trace with hash -560092008, now seen corresponding path program 1 times [2022-12-13 13:28:40,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:40,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458190008] [2022-12-13 13:28:40,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:40,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:41,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:41,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:41,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458190008] [2022-12-13 13:28:41,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458190008] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:41,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:41,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:28:41,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593353686] [2022-12-13 13:28:41,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:41,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:28:41,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:41,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:28:41,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:28:41,221 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 319 [2022-12-13 13:28:41,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 72 transitions, 379 flow. Second operand has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:41,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:41,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 319 [2022-12-13 13:28:41,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:41,398 INFO L130 PetriNetUnfolder]: 567/1466 cut-off events. [2022-12-13 13:28:41,398 INFO L131 PetriNetUnfolder]: For 1052/1052 co-relation queries the response was YES. [2022-12-13 13:28:41,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4982 conditions, 1466 events. 567/1466 cut-off events. For 1052/1052 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9165 event pairs, 156 based on Foata normal form. 78/1492 useless extension candidates. Maximal degree in co-relation 4970. Up to 1058 conditions per place. [2022-12-13 13:28:41,403 INFO L137 encePairwiseOnDemand]: 312/319 looper letters, 61 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2022-12-13 13:28:41,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 74 transitions, 495 flow [2022-12-13 13:28:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:28:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:28:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 658 transitions. [2022-12-13 13:28:41,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5156739811912225 [2022-12-13 13:28:41,405 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 658 transitions. [2022-12-13 13:28:41,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 658 transitions. [2022-12-13 13:28:41,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:41,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 658 transitions. [2022-12-13 13:28:41,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 164.5) internal successors, (658), 4 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:41,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:41,410 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:41,410 INFO L175 Difference]: Start difference. First operand has 63 places, 72 transitions, 379 flow. Second operand 4 states and 658 transitions. [2022-12-13 13:28:41,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 74 transitions, 495 flow [2022-12-13 13:28:41,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 74 transitions, 451 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-12-13 13:28:41,417 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 287 flow [2022-12-13 13:28:41,417 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=287, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2022-12-13 13:28:41,418 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2022-12-13 13:28:41,418 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 287 flow [2022-12-13 13:28:41,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:41,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:41,419 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:41,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 13:28:41,419 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:28:41,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:41,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1702117799, now seen corresponding path program 1 times [2022-12-13 13:28:41,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:41,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293218156] [2022-12-13 13:28:41,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:41,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:41,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:41,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293218156] [2022-12-13 13:28:41,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293218156] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:41,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:41,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:28:41,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638170307] [2022-12-13 13:28:41,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:41,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:28:41,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:41,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:28:41,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:28:41,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 319 [2022-12-13 13:28:41,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 287 flow. Second operand has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:41,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:41,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 319 [2022-12-13 13:28:41,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:41,804 INFO L130 PetriNetUnfolder]: 402/1136 cut-off events. [2022-12-13 13:28:41,804 INFO L131 PetriNetUnfolder]: For 660/660 co-relation queries the response was YES. [2022-12-13 13:28:41,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3577 conditions, 1136 events. 402/1136 cut-off events. For 660/660 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6962 event pairs, 133 based on Foata normal form. 32/1132 useless extension candidates. Maximal degree in co-relation 3569. Up to 840 conditions per place. [2022-12-13 13:28:41,807 INFO L137 encePairwiseOnDemand]: 314/319 looper letters, 72 selfloop transitions, 9 changer transitions 0/82 dead transitions. [2022-12-13 13:28:41,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 544 flow [2022-12-13 13:28:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:28:41,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:28:41,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 631 transitions. [2022-12-13 13:28:41,809 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4945141065830721 [2022-12-13 13:28:41,809 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 631 transitions. [2022-12-13 13:28:41,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 631 transitions. [2022-12-13 13:28:41,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:41,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 631 transitions. [2022-12-13 13:28:41,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:41,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:41,813 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:41,813 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 287 flow. Second operand 4 states and 631 transitions. [2022-12-13 13:28:41,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 544 flow [2022-12-13 13:28:41,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 82 transitions, 513 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 13:28:41,817 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 268 flow [2022-12-13 13:28:41,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2022-12-13 13:28:41,818 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2022-12-13 13:28:41,818 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 268 flow [2022-12-13 13:28:41,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:41,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:41,818 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:41,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 13:28:41,819 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:28:41,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:41,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1825596544, now seen corresponding path program 1 times [2022-12-13 13:28:41,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:41,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682209573] [2022-12-13 13:28:41,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:41,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:41,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:41,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:41,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682209573] [2022-12-13 13:28:41,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682209573] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:41,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:41,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:28:41,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938775674] [2022-12-13 13:28:41,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:41,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:28:41,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:41,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:28:41,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:28:41,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 319 [2022-12-13 13:28:41,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:41,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:41,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 319 [2022-12-13 13:28:41,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:42,039 INFO L130 PetriNetUnfolder]: 322/930 cut-off events. [2022-12-13 13:28:42,039 INFO L131 PetriNetUnfolder]: For 428/428 co-relation queries the response was YES. [2022-12-13 13:28:42,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2852 conditions, 930 events. 322/930 cut-off events. For 428/428 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5196 event pairs, 243 based on Foata normal form. 0/912 useless extension candidates. Maximal degree in co-relation 2844. Up to 894 conditions per place. [2022-12-13 13:28:42,041 INFO L137 encePairwiseOnDemand]: 316/319 looper letters, 52 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2022-12-13 13:28:42,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 362 flow [2022-12-13 13:28:42,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:28:42,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:28:42,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2022-12-13 13:28:42,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5256008359456635 [2022-12-13 13:28:42,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2022-12-13 13:28:42,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2022-12-13 13:28:42,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:42,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2022-12-13 13:28:42,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,045 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 268 flow. Second operand 3 states and 503 transitions. [2022-12-13 13:28:42,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 362 flow [2022-12-13 13:28:42,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 353 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:28:42,046 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 249 flow [2022-12-13 13:28:42,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2022-12-13 13:28:42,047 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2022-12-13 13:28:42,047 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 249 flow [2022-12-13 13:28:42,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:42,047 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:42,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 13:28:42,048 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:28:42,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:42,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1825596543, now seen corresponding path program 1 times [2022-12-13 13:28:42,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:42,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852051787] [2022-12-13 13:28:42,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:42,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:42,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:42,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852051787] [2022-12-13 13:28:42,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852051787] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:42,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:42,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:28:42,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221617204] [2022-12-13 13:28:42,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:42,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:28:42,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:42,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:28:42,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:28:42,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 319 [2022-12-13 13:28:42,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:42,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 319 [2022-12-13 13:28:42,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:42,225 INFO L130 PetriNetUnfolder]: 242/720 cut-off events. [2022-12-13 13:28:42,225 INFO L131 PetriNetUnfolder]: For 270/270 co-relation queries the response was YES. [2022-12-13 13:28:42,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2129 conditions, 720 events. 242/720 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3617 event pairs, 189 based on Foata normal form. 0/720 useless extension candidates. Maximal degree in co-relation 2121. Up to 694 conditions per place. [2022-12-13 13:28:42,226 INFO L137 encePairwiseOnDemand]: 316/319 looper letters, 50 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2022-12-13 13:28:42,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 339 flow [2022-12-13 13:28:42,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:28:42,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:28:42,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2022-12-13 13:28:42,227 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4994775339602926 [2022-12-13 13:28:42,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2022-12-13 13:28:42,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2022-12-13 13:28:42,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:42,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2022-12-13 13:28:42,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,229 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 249 flow. Second operand 3 states and 478 transitions. [2022-12-13 13:28:42,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 339 flow [2022-12-13 13:28:42,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 335 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:28:42,231 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 235 flow [2022-12-13 13:28:42,231 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2022-12-13 13:28:42,231 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2022-12-13 13:28:42,231 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 235 flow [2022-12-13 13:28:42,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,232 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:42,232 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:42,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 13:28:42,232 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:28:42,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:42,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1897281734, now seen corresponding path program 1 times [2022-12-13 13:28:42,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:42,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483356739] [2022-12-13 13:28:42,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:42,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:42,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:42,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483356739] [2022-12-13 13:28:42,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483356739] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:42,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:42,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:28:42,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788700856] [2022-12-13 13:28:42,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:42,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:28:42,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:42,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:28:42,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:28:42,325 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 319 [2022-12-13 13:28:42,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:42,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 319 [2022-12-13 13:28:42,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:42,431 INFO L130 PetriNetUnfolder]: 242/714 cut-off events. [2022-12-13 13:28:42,432 INFO L131 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2022-12-13 13:28:42,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2115 conditions, 714 events. 242/714 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3580 event pairs, 115 based on Foata normal form. 4/718 useless extension candidates. Maximal degree in co-relation 2107. Up to 489 conditions per place. [2022-12-13 13:28:42,434 INFO L137 encePairwiseOnDemand]: 315/319 looper letters, 71 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2022-12-13 13:28:42,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 77 transitions, 480 flow [2022-12-13 13:28:42,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:28:42,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:28:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 680 transitions. [2022-12-13 13:28:42,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5329153605015674 [2022-12-13 13:28:42,437 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 680 transitions. [2022-12-13 13:28:42,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 680 transitions. [2022-12-13 13:28:42,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:42,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 680 transitions. [2022-12-13 13:28:42,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,443 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,443 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 235 flow. Second operand 4 states and 680 transitions. [2022-12-13 13:28:42,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 77 transitions, 480 flow [2022-12-13 13:28:42,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 474 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 13:28:42,446 INFO L231 Difference]: Finished difference. Result has 55 places, 54 transitions, 231 flow [2022-12-13 13:28:42,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=55, PETRI_TRANSITIONS=54} [2022-12-13 13:28:42,447 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -7 predicate places. [2022-12-13 13:28:42,447 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 54 transitions, 231 flow [2022-12-13 13:28:42,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:28:42,448 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:42,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 13:28:42,448 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 13:28:42,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:42,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1171999402, now seen corresponding path program 1 times [2022-12-13 13:28:42,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:42,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226266454] [2022-12-13 13:28:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:42,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:42,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:42,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226266454] [2022-12-13 13:28:42,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226266454] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:28:42,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:28:42,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:28:42,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77706901] [2022-12-13 13:28:42,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:28:42,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:28:42,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:42,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:28:42,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:28:42,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 319 [2022-12-13 13:28:42,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:28:42,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 319 [2022-12-13 13:28:42,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:28:42,878 INFO L130 PetriNetUnfolder]: 242/714 cut-off events. [2022-12-13 13:28:42,878 INFO L131 PetriNetUnfolder]: For 314/314 co-relation queries the response was YES. [2022-12-13 13:28:42,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2151 conditions, 714 events. 242/714 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3562 event pairs, 189 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 2144. Up to 690 conditions per place. [2022-12-13 13:28:42,879 INFO L137 encePairwiseOnDemand]: 317/319 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2022-12-13 13:28:42,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 329 flow [2022-12-13 13:28:42,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:28:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:28:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2022-12-13 13:28:42,880 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5130616509926855 [2022-12-13 13:28:42,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2022-12-13 13:28:42,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2022-12-13 13:28:42,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:28:42,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2022-12-13 13:28:42,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,882 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 231 flow. Second operand 3 states and 491 transitions. [2022-12-13 13:28:42,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 329 flow [2022-12-13 13:28:42,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 53 transitions, 323 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 13:28:42,884 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2022-12-13 13:28:42,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2022-12-13 13:28:42,884 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -9 predicate places. [2022-12-13 13:28:42,884 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2022-12-13 13:28:42,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:42,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2022-12-13 13:28:42,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2022-12-13 13:28:42,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2022-12-13 13:28:42,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2022-12-13 13:28:42,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (10 of 15 remaining) [2022-12-13 13:28:42,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (9 of 15 remaining) [2022-12-13 13:28:42,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (8 of 15 remaining) [2022-12-13 13:28:42,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (7 of 15 remaining) [2022-12-13 13:28:42,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2022-12-13 13:28:42,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2022-12-13 13:28:42,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2022-12-13 13:28:42,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2022-12-13 13:28:42,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2022-12-13 13:28:42,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 15 remaining) [2022-12-13 13:28:42,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 15 remaining) [2022-12-13 13:28:42,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 13:28:42,888 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:42,891 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 13:28:42,891 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:28:42,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:28:42 BasicIcfg [2022-12-13 13:28:42,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:28:42,893 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:28:42,893 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:28:42,894 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:28:42,894 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:28:32" (3/4) ... [2022-12-13 13:28:42,896 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 13:28:42,900 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2022-12-13 13:28:42,901 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-12-13 13:28:42,904 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-12-13 13:28:42,904 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 13:28:42,904 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 13:28:42,904 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 13:28:42,928 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 13:28:42,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:28:42,929 INFO L158 Benchmark]: Toolchain (without parser) took 10680.35ms. Allocated memory was 140.5MB in the beginning and 396.4MB in the end (delta: 255.9MB). Free memory was 103.3MB in the beginning and 84.1MB in the end (delta: 19.2MB). Peak memory consumption was 276.6MB. Max. memory is 16.1GB. [2022-12-13 13:28:42,929 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 140.5MB. Free memory is still 112.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:28:42,929 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.49ms. Allocated memory is still 140.5MB. Free memory was 103.3MB in the beginning and 83.5MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 13:28:42,930 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.11ms. Allocated memory is still 140.5MB. Free memory was 83.5MB in the beginning and 81.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:28:42,930 INFO L158 Benchmark]: Boogie Preprocessor took 18.01ms. Allocated memory is still 140.5MB. Free memory was 81.4MB in the beginning and 79.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:28:42,930 INFO L158 Benchmark]: RCFGBuilder took 375.37ms. Allocated memory is still 140.5MB. Free memory was 79.3MB in the beginning and 60.9MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 13:28:42,930 INFO L158 Benchmark]: TraceAbstraction took 9914.12ms. Allocated memory was 140.5MB in the beginning and 396.4MB in the end (delta: 255.9MB). Free memory was 60.5MB in the beginning and 87.3MB in the end (delta: -26.8MB). Peak memory consumption was 230.4MB. Max. memory is 16.1GB. [2022-12-13 13:28:42,931 INFO L158 Benchmark]: Witness Printer took 34.92ms. Allocated memory is still 396.4MB. Free memory was 87.3MB in the beginning and 84.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 13:28:42,932 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 140.5MB. Free memory is still 112.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.49ms. Allocated memory is still 140.5MB. Free memory was 103.3MB in the beginning and 83.5MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.11ms. Allocated memory is still 140.5MB. Free memory was 83.5MB in the beginning and 81.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.01ms. Allocated memory is still 140.5MB. Free memory was 81.4MB in the beginning and 79.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 375.37ms. Allocated memory is still 140.5MB. Free memory was 79.3MB in the beginning and 60.9MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 9914.12ms. Allocated memory was 140.5MB in the beginning and 396.4MB in the end (delta: 255.9MB). Free memory was 60.5MB in the beginning and 87.3MB in the end (delta: -26.8MB). Peak memory consumption was 230.4MB. Max. memory is 16.1GB. * Witness Printer took 34.92ms. Allocated memory is still 396.4MB. Free memory was 87.3MB in the beginning and 84.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 167 PlacesBefore, 62 PlacesAfterwards, 164 TransitionsBefore, 58 TransitionsAfterwards, 5652 CoEnabledTransitionPairs, 7 FixpointIterations, 56 TrivialSequentialCompositions, 78 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 1 ChoiceCompositions, 148 TotalNumberOfCompositions, 17986 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5155, independent: 4673, independent conditional: 0, independent unconditional: 4673, dependent: 482, dependent conditional: 0, dependent unconditional: 482, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2842, independent: 2754, independent conditional: 0, independent unconditional: 2754, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5155, independent: 1919, independent conditional: 0, independent unconditional: 1919, dependent: 394, dependent conditional: 0, dependent unconditional: 394, unknown: 2842, unknown conditional: 0, unknown unconditional: 2842] , Statistics on independence cache: Total cache size (in pairs): 164, Positive cache size: 125, Positive conditional cache size: 0, Positive unconditional cache size: 125, Negative cache size: 39, Negative conditional cache size: 0, Negative unconditional cache size: 39, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 707]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 208 locations, 15 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.8s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1400 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 917 mSDsluCounter, 93 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 275 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2230 IncrementalHoareTripleChecker+Invalid, 2505 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 275 mSolverCounterUnsat, 65 mSDtfsCounter, 2230 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=379occurred in iteration=8, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 1799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 13:28:42,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12208a6e-376c-4e5d-bf15-e0998bf70dd5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE