./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a112b6-0221-4169-bab3-a1a7ff5e06c8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a112b6-0221-4169-bab3-a1a7ff5e06c8/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_21a112b6-0221-4169-bab3-a1a7ff5e06c8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a112b6-0221-4169-bab3-a1a7ff5e06c8/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a112b6-0221-4169-bab3-a1a7ff5e06c8/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_21a112b6-0221-4169-bab3-a1a7ff5e06c8/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 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e --- 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 17:38:52,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:38:52,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:38:52,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:38:52,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:38:52,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:38:52,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:38:52,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:38:52,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:38:52,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:38:52,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:38:52,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:38:52,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:38:52,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:38:52,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:38:52,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:38:52,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:38:52,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:38:52,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:38:52,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:38:52,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:38:52,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:38:52,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:38:52,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:38:52,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:38:52,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:38:52,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:38:52,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:38:52,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:38:52,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:38:52,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:38:52,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:38:52,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:38:52,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:38:52,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:38:52,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:38:52,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:38:52,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:38:52,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:38:52,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:38:52,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:38:52,384 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a112b6-0221-4169-bab3-a1a7ff5e06c8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 17:38:52,404 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:38:52,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:38:52,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:38:52,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:38:52,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:38:52,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:38:52,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:38:52,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:38:52,406 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:38:52,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:38:52,406 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:38:52,407 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:38:52,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:38:52,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:38:52,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:38:52,407 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 17:38:52,407 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 17:38:52,408 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 17:38:52,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:38:52,408 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 17:38:52,408 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:38:52,408 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:38:52,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:38:52,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:38:52,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:38:52,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:38:52,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:38:52,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:38:52,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:38:52,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:38:52,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:38:52,410 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:38:52,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:38:52,410 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:38:52,410 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_21a112b6-0221-4169-bab3-a1a7ff5e06c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a112b6-0221-4169-bab3-a1a7ff5e06c8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e [2022-12-13 17:38:52,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:38:52,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:38:52,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:38:52,626 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:38:52,627 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:38:52,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a112b6-0221-4169-bab3-a1a7ff5e06c8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2022-12-13 17:38:55,230 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:38:55,503 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:38:55,503 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a112b6-0221-4169-bab3-a1a7ff5e06c8/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2022-12-13 17:38:55,521 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a112b6-0221-4169-bab3-a1a7ff5e06c8/bin/uautomizer-uyxdKDjOR8/data/b9fcc971f/447992c759ab4af7be9f77e5b732c9b7/FLAG384c30db3 [2022-12-13 17:38:55,801 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a112b6-0221-4169-bab3-a1a7ff5e06c8/bin/uautomizer-uyxdKDjOR8/data/b9fcc971f/447992c759ab4af7be9f77e5b732c9b7 [2022-12-13 17:38:55,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:38:55,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:38:55,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:38:55,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:38:55,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:38:55,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:38:55" (1/1) ... [2022-12-13 17:38:55,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f5304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:38:55, skipping insertion in model container [2022-12-13 17:38:55,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:38:55" (1/1) ... [2022-12-13 17:38:55,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:38:55,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:38:56,420 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 17:38:56,423 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:38:56,424 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-12-13 17:38:56,427 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:38:56,428 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-12-13 17:38:56,428 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-13 17:38:56,430 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 17:38:56,431 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-13 17:38:56,432 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:38:56,432 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-12-13 17:38:56,433 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:38:56,434 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-12-13 17:38:56,436 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 17:38:56,439 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:38:56,439 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-12-13 17:38:56,440 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:38:56,441 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-12-13 17:38:56,441 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:38:56,442 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-12-13 17:38:56,443 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:38:56,443 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-12-13 17:38:56,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:38:56,454 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:38:56,481 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 17:38:56,482 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:38:56,482 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-12-13 17:38:56,483 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:38:56,484 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-12-13 17:38:56,484 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-13 17:38:56,485 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 17:38:56,485 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-13 17:38:56,486 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:38:56,486 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-12-13 17:38:56,487 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:38:56,487 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-12-13 17:38:56,489 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 17:38:56,491 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:38:56,492 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-12-13 17:38:56,498 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:38:56,499 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-12-13 17:38:56,501 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:38:56,501 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-12-13 17:38:56,502 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 17:38:56,503 WARN L623 FunctionHandler]: Unknown extern function strerror [2022-12-13 17:38:56,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:38:56,599 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:38:56,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:38:56 WrapperNode [2022-12-13 17:38:56,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:38:56,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:38:56,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:38:56,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:38:56,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:38:56" (1/1) ... [2022-12-13 17:38:56,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:38:56" (1/1) ... [2022-12-13 17:38:56,650 INFO L138 Inliner]: procedures = 524, calls = 61, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 123 [2022-12-13 17:38:56,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:38:56,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:38:56,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:38:56,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:38:56,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:38:56" (1/1) ... [2022-12-13 17:38:56,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:38:56" (1/1) ... [2022-12-13 17:38:56,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:38:56" (1/1) ... [2022-12-13 17:38:56,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:38:56" (1/1) ... [2022-12-13 17:38:56,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:38:56" (1/1) ... [2022-12-13 17:38:56,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:38:56" (1/1) ... [2022-12-13 17:38:56,681 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:38:56" (1/1) ... [2022-12-13 17:38:56,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:38:56" (1/1) ... [2022-12-13 17:38:56,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:38:56,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:38:56,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:38:56,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:38:56,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:38:56" (1/1) ... [2022-12-13 17:38:56,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:38:56,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a112b6-0221-4169-bab3-a1a7ff5e06c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:38:56,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a112b6-0221-4169-bab3-a1a7ff5e06c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:38:56,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a112b6-0221-4169-bab3-a1a7ff5e06c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:38:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2022-12-13 17:38:56,749 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2022-12-13 17:38:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2022-12-13 17:38:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2022-12-13 17:38:56,749 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2022-12-13 17:38:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2022-12-13 17:38:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:38:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:38:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 17:38:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:38:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:38:56,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:38:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:38:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2022-12-13 17:38:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 17:38:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:38:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:38:56,752 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 17:38:56,958 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:38:56,960 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:38:57,180 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:38:57,188 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:38:57,189 INFO L300 CfgBuilder]: Removed 19 assume(true) statements. [2022-12-13 17:38:57,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:38:57 BoogieIcfgContainer [2022-12-13 17:38:57,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:38:57,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:38:57,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:38:57,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:38:57,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:38:55" (1/3) ... [2022-12-13 17:38:57,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1431d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:38:57, skipping insertion in model container [2022-12-13 17:38:57,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:38:56" (2/3) ... [2022-12-13 17:38:57,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1431d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:38:57, skipping insertion in model container [2022-12-13 17:38:57,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:38:57" (3/3) ... [2022-12-13 17:38:57,199 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2022-12-13 17:38:57,217 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:38:57,218 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-12-13 17:38:57,218 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:38:57,276 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 17:38:57,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 230 transitions, 476 flow [2022-12-13 17:38:57,364 INFO L130 PetriNetUnfolder]: 32/228 cut-off events. [2022-12-13 17:38:57,364 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 17:38:57,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 228 events. 32/228 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 476 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 138. Up to 5 conditions per place. [2022-12-13 17:38:57,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 230 transitions, 476 flow [2022-12-13 17:38:57,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 223 transitions, 458 flow [2022-12-13 17:38:57,378 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:38:57,385 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 223 transitions, 458 flow [2022-12-13 17:38:57,387 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 223 transitions, 458 flow [2022-12-13 17:38:57,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 223 transitions, 458 flow [2022-12-13 17:38:57,414 INFO L130 PetriNetUnfolder]: 32/223 cut-off events. [2022-12-13 17:38:57,414 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 17:38:57,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 223 events. 32/223 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 448 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 133. Up to 5 conditions per place. [2022-12-13 17:38:57,418 INFO L119 LiptonReduction]: Number of co-enabled transitions 9878 [2022-12-13 17:39:18,417 INFO L134 LiptonReduction]: Checked pairs total: 9799 [2022-12-13 17:39:18,417 INFO L136 LiptonReduction]: Total number of compositions: 239 [2022-12-13 17:39:18,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:39:18,431 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;@76f24fb1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:39:18,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 17:39:18,432 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 17:39:18,432 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:39:18,432 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:39:18,432 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 17:39:18,433 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2022-12-13 17:39:18,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:39:18,436 INFO L85 PathProgramCache]: Analyzing trace with hash 951, now seen corresponding path program 1 times [2022-12-13 17:39:18,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:39:18,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811411685] [2022-12-13 17:39:18,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:39:18,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:39:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:39:18,584 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 17:39:18,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:39:18,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811411685] [2022-12-13 17:39:18,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811411685] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:39:18,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:39:18,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 17:39:18,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299810517] [2022-12-13 17:39:18,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:39:18,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 17:39:18,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:39:18,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 17:39:18,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:39:18,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 469 [2022-12-13 17:39:18,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 56 transitions, 124 flow. Second operand has 2 states, 2 states have (on average 199.5) internal successors, (399), 2 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:39:18,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:39:18,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 469 [2022-12-13 17:39:18,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:39:18,710 INFO L130 PetriNetUnfolder]: 194/348 cut-off events. [2022-12-13 17:39:18,710 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-13 17:39:18,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 348 events. 194/348 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1233 event pairs, 119 based on Foata normal form. 56/244 useless extension candidates. Maximal degree in co-relation 572. Up to 293 conditions per place. [2022-12-13 17:39:18,714 INFO L137 encePairwiseOnDemand]: 454/469 looper letters, 24 selfloop transitions, 0 changer transitions 1/33 dead transitions. [2022-12-13 17:39:18,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 128 flow [2022-12-13 17:39:18,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 17:39:18,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 17:39:18,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 438 transitions. [2022-12-13 17:39:18,727 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4669509594882729 [2022-12-13 17:39:18,728 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 438 transitions. [2022-12-13 17:39:18,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 438 transitions. [2022-12-13 17:39:18,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:39:18,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 438 transitions. [2022-12-13 17:39:18,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 219.0) internal successors, (438), 2 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:39:18,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 469.0) internal successors, (1407), 3 states have internal predecessors, (1407), 0 states have call successors, (0), 0 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 17:39:18,741 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 469.0) internal successors, (1407), 3 states have internal predecessors, (1407), 0 states have call successors, (0), 0 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 17:39:18,743 INFO L175 Difference]: Start difference. First operand has 42 places, 56 transitions, 124 flow. Second operand 2 states and 438 transitions. [2022-12-13 17:39:18,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 128 flow [2022-12-13 17:39:18,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 120 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 17:39:18,746 INFO L231 Difference]: Finished difference. Result has 33 places, 32 transitions, 68 flow [2022-12-13 17:39:18,748 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=469, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=32} [2022-12-13 17:39:18,751 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2022-12-13 17:39:18,751 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 32 transitions, 68 flow [2022-12-13 17:39:18,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 199.5) internal successors, (399), 2 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:39:18,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:39:18,752 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:39:18,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:39:18,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2022-12-13 17:39:18,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:39:18,753 INFO L85 PathProgramCache]: Analyzing trace with hash 29103191, now seen corresponding path program 1 times [2022-12-13 17:39:18,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:39:18,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102656772] [2022-12-13 17:39:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:39:18,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:39:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:39:18,946 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 17:39:18,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:39:18,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102656772] [2022-12-13 17:39:18,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102656772] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:39:18,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:39:18,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:39:18,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137819247] [2022-12-13 17:39:18,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:39:18,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:39:18,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:39:18,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:39:18,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:39:19,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 469 [2022-12-13 17:39:19,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 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 17:39:19,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:39:19,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 469 [2022-12-13 17:39:19,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:39:19,081 INFO L130 PetriNetUnfolder]: 190/330 cut-off events. [2022-12-13 17:39:19,081 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 17:39:19,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 330 events. 190/330 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1136 event pairs, 118 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 621. Up to 285 conditions per place. [2022-12-13 17:39:19,083 INFO L137 encePairwiseOnDemand]: 465/469 looper letters, 22 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2022-12-13 17:39:19,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 112 flow [2022-12-13 17:39:19,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:39:19,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:39:19,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 587 transitions. [2022-12-13 17:39:19,087 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4171997157071784 [2022-12-13 17:39:19,087 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 587 transitions. [2022-12-13 17:39:19,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 587 transitions. [2022-12-13 17:39:19,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:39:19,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 587 transitions. [2022-12-13 17:39:19,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 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 17:39:19,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 469.0) internal successors, (1876), 4 states have internal predecessors, (1876), 0 states have call successors, (0), 0 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 17:39:19,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 469.0) internal successors, (1876), 4 states have internal predecessors, (1876), 0 states have call successors, (0), 0 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 17:39:19,094 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 68 flow. Second operand 3 states and 587 transitions. [2022-12-13 17:39:19,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 112 flow [2022-12-13 17:39:19,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 112 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:39:19,095 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 68 flow [2022-12-13 17:39:19,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=469, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2022-12-13 17:39:19,096 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -10 predicate places. [2022-12-13 17:39:19,096 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 68 flow [2022-12-13 17:39:19,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 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 17:39:19,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:39:19,096 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:39:19,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:39:19,097 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2022-12-13 17:39:19,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:39:19,097 INFO L85 PathProgramCache]: Analyzing trace with hash 29103192, now seen corresponding path program 1 times [2022-12-13 17:39:19,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:39:19,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65016323] [2022-12-13 17:39:19,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:39:19,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:39:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:39:19,217 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 17:39:19,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:39:19,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65016323] [2022-12-13 17:39:19,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65016323] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:39:19,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:39:19,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:39:19,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856003296] [2022-12-13 17:39:19,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:39:19,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:39:19,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:39:19,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:39:19,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:39:19,282 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 469 [2022-12-13 17:39:19,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 17:39:19,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:39:19,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 469 [2022-12-13 17:39:19,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:39:19,349 INFO L130 PetriNetUnfolder]: 179/309 cut-off events. [2022-12-13 17:39:19,349 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 17:39:19,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 309 events. 179/309 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1046 event pairs, 110 based on Foata normal form. 6/185 useless extension candidates. Maximal degree in co-relation 581. Up to 264 conditions per place. [2022-12-13 17:39:19,351 INFO L137 encePairwiseOnDemand]: 465/469 looper letters, 20 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2022-12-13 17:39:19,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 108 flow [2022-12-13 17:39:19,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:39:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:39:19,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2022-12-13 17:39:19,354 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2022-12-13 17:39:19,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2022-12-13 17:39:19,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2022-12-13 17:39:19,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:39:19,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2022-12-13 17:39:19,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 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 17:39:19,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 469.0) internal successors, (1876), 4 states have internal predecessors, (1876), 0 states have call successors, (0), 0 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 17:39:19,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 469.0) internal successors, (1876), 4 states have internal predecessors, (1876), 0 states have call successors, (0), 0 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 17:39:19,361 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 68 flow. Second operand 3 states and 603 transitions. [2022-12-13 17:39:19,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 108 flow [2022-12-13 17:39:19,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:39:19,362 INFO L231 Difference]: Finished difference. Result has 30 places, 28 transitions, 64 flow [2022-12-13 17:39:19,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=469, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=30, PETRI_TRANSITIONS=28} [2022-12-13 17:39:19,363 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -12 predicate places. [2022-12-13 17:39:19,363 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 64 flow [2022-12-13 17:39:19,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 17:39:19,364 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:39:19,364 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:39:19,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:39:19,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2022-12-13 17:39:19,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:39:19,365 INFO L85 PathProgramCache]: Analyzing trace with hash -569580466, now seen corresponding path program 1 times [2022-12-13 17:39:19,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:39:19,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878265559] [2022-12-13 17:39:19,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:39:19,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:39:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:39:19,511 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 17:39:19,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:39:19,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878265559] [2022-12-13 17:39:19,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878265559] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:39:19,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:39:19,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:39:19,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060116301] [2022-12-13 17:39:19,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:39:19,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:39:19,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:39:19,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:39:19,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:39:19,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 469 [2022-12-13 17:39:19,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 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 17:39:19,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:39:19,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 469 [2022-12-13 17:39:19,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:39:19,667 INFO L130 PetriNetUnfolder]: 242/391 cut-off events. [2022-12-13 17:39:19,668 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 17:39:19,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 391 events. 242/391 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1271 event pairs, 153 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 753. Up to 354 conditions per place. [2022-12-13 17:39:19,670 INFO L137 encePairwiseOnDemand]: 466/469 looper letters, 22 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2022-12-13 17:39:19,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 110 flow [2022-12-13 17:39:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:39:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:39:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 571 transitions. [2022-12-13 17:39:19,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4058280028429282 [2022-12-13 17:39:19,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 571 transitions. [2022-12-13 17:39:19,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 571 transitions. [2022-12-13 17:39:19,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:39:19,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 571 transitions. [2022-12-13 17:39:19,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:39:19,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 469.0) internal successors, (1876), 4 states have internal predecessors, (1876), 0 states have call successors, (0), 0 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 17:39:19,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 469.0) internal successors, (1876), 4 states have internal predecessors, (1876), 0 states have call successors, (0), 0 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 17:39:19,679 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 64 flow. Second operand 3 states and 571 transitions. [2022-12-13 17:39:19,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 110 flow [2022-12-13 17:39:19,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:39:19,680 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 62 flow [2022-12-13 17:39:19,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=469, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2022-12-13 17:39:19,681 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -13 predicate places. [2022-12-13 17:39:19,681 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 62 flow [2022-12-13 17:39:19,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 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 17:39:19,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:39:19,682 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:39:19,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:39:19,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2022-12-13 17:39:19,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:39:19,683 INFO L85 PathProgramCache]: Analyzing trace with hash -569580465, now seen corresponding path program 1 times [2022-12-13 17:39:19,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:39:19,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236883398] [2022-12-13 17:39:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:39:19,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:39:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:39:19,754 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 17:39:19,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:39:19,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236883398] [2022-12-13 17:39:19,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236883398] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:39:19,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:39:19,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:39:19,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486531289] [2022-12-13 17:39:19,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:39:19,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:39:19,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:39:19,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:39:19,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:39:19,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 469 [2022-12-13 17:39:19,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 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 17:39:19,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:39:19,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 469 [2022-12-13 17:39:19,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:39:19,884 INFO L130 PetriNetUnfolder]: 236/381 cut-off events. [2022-12-13 17:39:19,885 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 17:39:19,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 381 events. 236/381 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1229 event pairs, 148 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 731. Up to 342 conditions per place. [2022-12-13 17:39:19,886 INFO L137 encePairwiseOnDemand]: 466/469 looper letters, 20 selfloop transitions, 2 changer transitions 1/26 dead transitions. [2022-12-13 17:39:19,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 106 flow [2022-12-13 17:39:19,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:39:19,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:39:19,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2022-12-13 17:39:19,889 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42217484008528783 [2022-12-13 17:39:19,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2022-12-13 17:39:19,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2022-12-13 17:39:19,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:39:19,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2022-12-13 17:39:19,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 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 17:39:19,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 469.0) internal successors, (1876), 4 states have internal predecessors, (1876), 0 states have call successors, (0), 0 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 17:39:19,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 469.0) internal successors, (1876), 4 states have internal predecessors, (1876), 0 states have call successors, (0), 0 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 17:39:19,895 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 62 flow. Second operand 3 states and 594 transitions. [2022-12-13 17:39:19,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 106 flow [2022-12-13 17:39:19,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:39:19,897 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 58 flow [2022-12-13 17:39:19,897 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=469, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2022-12-13 17:39:19,897 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -14 predicate places. [2022-12-13 17:39:19,898 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 58 flow [2022-12-13 17:39:19,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 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 17:39:19,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:39:19,899 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:39:19,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:39:19,899 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2022-12-13 17:39:19,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:39:19,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2049856443, now seen corresponding path program 1 times [2022-12-13 17:39:19,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:39:19,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214135027] [2022-12-13 17:39:19,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:39:19,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:39:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:39:20,298 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 17:39:20,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:39:20,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214135027] [2022-12-13 17:39:20,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214135027] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:39:20,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:39:20,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:39:20,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595716624] [2022-12-13 17:39:20,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:39:20,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:39:20,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:39:20,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:39:20,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:39:20,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 469 [2022-12-13 17:39:20,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 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 17:39:20,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:39:20,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 469 [2022-12-13 17:39:20,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:39:20,426 INFO L130 PetriNetUnfolder]: 154/260 cut-off events. [2022-12-13 17:39:20,427 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 17:39:20,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 260 events. 154/260 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 775 event pairs, 91 based on Foata normal form. 1/163 useless extension candidates. Maximal degree in co-relation 491. Up to 225 conditions per place. [2022-12-13 17:39:20,427 INFO L137 encePairwiseOnDemand]: 467/469 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2022-12-13 17:39:20,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 24 transitions, 94 flow [2022-12-13 17:39:20,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:39:20,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:39:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2022-12-13 17:39:20,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42217484008528783 [2022-12-13 17:39:20,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2022-12-13 17:39:20,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2022-12-13 17:39:20,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:39:20,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2022-12-13 17:39:20,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 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 17:39:20,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 469.0) internal successors, (1876), 4 states have internal predecessors, (1876), 0 states have call successors, (0), 0 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 17:39:20,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 469.0) internal successors, (1876), 4 states have internal predecessors, (1876), 0 states have call successors, (0), 0 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 17:39:20,436 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 58 flow. Second operand 3 states and 594 transitions. [2022-12-13 17:39:20,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 24 transitions, 94 flow [2022-12-13 17:39:20,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:39:20,437 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2022-12-13 17:39:20,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=469, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2022-12-13 17:39:20,437 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -15 predicate places. [2022-12-13 17:39:20,438 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2022-12-13 17:39:20,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 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 17:39:20,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2022-12-13 17:39:20,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2022-12-13 17:39:20,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (8 of 11 remaining) [2022-12-13 17:39:20,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2022-12-13 17:39:20,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2022-12-13 17:39:20,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2022-12-13 17:39:20,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2022-12-13 17:39:20,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 11 remaining) [2022-12-13 17:39:20,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 11 remaining) [2022-12-13 17:39:20,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2022-12-13 17:39:20,442 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2022-12-13 17:39:20,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:39:20,443 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-12-13 17:39:20,446 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 17:39:20,446 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 17:39:20,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 05:39:20 BasicIcfg [2022-12-13 17:39:20,449 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 17:39:20,450 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 17:39:20,450 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 17:39:20,450 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 17:39:20,450 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:38:57" (3/4) ... [2022-12-13 17:39:20,453 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 17:39:20,459 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure monitor_thread [2022-12-13 17:39:20,459 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure counter_thread [2022-12-13 17:39:20,463 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2022-12-13 17:39:20,463 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-12-13 17:39:20,463 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-12-13 17:39:20,463 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 17:39:20,463 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 17:39:20,497 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a112b6-0221-4169-bab3-a1a7ff5e06c8/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 17:39:20,497 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 17:39:20,498 INFO L158 Benchmark]: Toolchain (without parser) took 24694.15ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 81.5MB in the beginning and 101.3MB in the end (delta: -19.8MB). Peak memory consumption was 80.7MB. Max. memory is 16.1GB. [2022-12-13 17:39:20,498 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 90.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:39:20,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 795.02ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 81.3MB in the beginning and 73.0MB in the end (delta: 8.3MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. [2022-12-13 17:39:20,498 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.52ms. Allocated memory is still 142.6MB. Free memory was 73.0MB in the beginning and 69.5MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:39:20,499 INFO L158 Benchmark]: Boogie Preprocessor took 38.22ms. Allocated memory is still 142.6MB. Free memory was 69.5MB in the beginning and 66.7MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 17:39:20,499 INFO L158 Benchmark]: RCFGBuilder took 501.60ms. Allocated memory is still 142.6MB. Free memory was 66.7MB in the beginning and 99.0MB in the end (delta: -32.3MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2022-12-13 17:39:20,499 INFO L158 Benchmark]: TraceAbstraction took 23255.81ms. Allocated memory is still 142.6MB. Free memory was 98.2MB in the beginning and 32.1MB in the end (delta: 66.1MB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. [2022-12-13 17:39:20,499 INFO L158 Benchmark]: Witness Printer took 47.38ms. Allocated memory is still 142.6MB. Free memory was 32.1MB in the beginning and 101.3MB in the end (delta: -69.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 17:39:20,501 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 90.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 795.02ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 81.3MB in the beginning and 73.0MB in the end (delta: 8.3MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.52ms. Allocated memory is still 142.6MB. Free memory was 73.0MB in the beginning and 69.5MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.22ms. Allocated memory is still 142.6MB. Free memory was 69.5MB in the beginning and 66.7MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 501.60ms. Allocated memory is still 142.6MB. Free memory was 66.7MB in the beginning and 99.0MB in the end (delta: -32.3MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. * TraceAbstraction took 23255.81ms. Allocated memory is still 142.6MB. Free memory was 98.2MB in the beginning and 32.1MB in the end (delta: 66.1MB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. * Witness Printer took 47.38ms. Allocated memory is still 142.6MB. Free memory was 32.1MB in the beginning and 101.3MB in the end (delta: -69.2MB). 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: 21.0s, 198 PlacesBefore, 42 PlacesAfterwards, 223 TransitionsBefore, 56 TransitionsAfterwards, 9878 CoEnabledTransitionPairs, 8 FixpointIterations, 86 TrivialSequentialCompositions, 108 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 25 ConcurrentYvCompositions, 11 ChoiceCompositions, 239 TotalNumberOfCompositions, 9799 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8933, independent: 8907, independent conditional: 0, independent unconditional: 8907, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5450, independent: 5435, independent conditional: 0, independent unconditional: 5435, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8933, independent: 3472, independent conditional: 0, independent unconditional: 3472, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 5450, unknown conditional: 0, unknown unconditional: 5450] , Statistics on independence cache: Total cache size (in pairs): 114, Positive cache size: 111, Positive conditional cache size: 0, Positive unconditional cache size: 111, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, 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: 1835]: 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: -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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 275 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 21.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 769 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 325 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 655 IncrementalHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 86 mSDtfsCounter, 655 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 0.8s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 378 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 17:39:20,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21a112b6-0221-4169-bab3-a1a7ff5e06c8/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