./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_41-pt_rwlock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac993345-699e-4323-9282-b57f5b135074/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac993345-699e-4323-9282-b57f5b135074/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_ac993345-699e-4323-9282-b57f5b135074/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac993345-699e-4323-9282-b57f5b135074/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_41-pt_rwlock.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac993345-699e-4323-9282-b57f5b135074/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_ac993345-699e-4323-9282-b57f5b135074/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 fef1217f8a35a342f6e4927c3581e159c4208b83ce3f67c4227091859235df56 --- 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 17:58:28,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:58:28,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:58:28,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:58:28,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:58:28,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:58:28,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:58:28,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:58:28,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:58:28,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:58:28,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:58:28,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:58:28,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:58:28,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:58:28,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:58:28,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:58:28,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:58:28,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:58:28,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:58:28,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:58:28,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:58:28,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:58:28,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:58:28,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:58:28,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:58:28,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:58:28,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:58:28,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:58:28,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:58:28,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:58:28,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:58:28,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:58:28,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:58:28,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:58:28,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:58:28,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:58:28,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:58:28,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:58:28,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:58:28,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:58:28,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:58:28,490 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac993345-699e-4323-9282-b57f5b135074/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 17:58:28,520 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:58:28,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:58:28,521 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:58:28,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:58:28,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:58:28,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:58:28,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:58:28,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:58:28,523 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:58:28,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:58:28,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:58:28,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:58:28,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:58:28,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:58:28,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:58:28,524 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 17:58:28,525 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 17:58:28,525 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 17:58:28,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:58:28,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 17:58:28,525 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:58:28,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:58:28,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:58:28,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:58:28,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:58:28,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:58:28,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:58:28,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:58:28,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:58:28,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:58:28,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:58:28,527 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:58:28,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:58:28,528 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:58:28,528 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_ac993345-699e-4323-9282-b57f5b135074/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac993345-699e-4323-9282-b57f5b135074/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fef1217f8a35a342f6e4927c3581e159c4208b83ce3f67c4227091859235df56 [2022-12-13 17:58:28,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:58:28,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:58:28,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:58:28,724 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:58:28,724 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:58:28,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac993345-699e-4323-9282-b57f5b135074/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/04-mutex_41-pt_rwlock.i [2022-12-13 17:58:31,268 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:58:31,477 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:58:31,478 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac993345-699e-4323-9282-b57f5b135074/sv-benchmarks/c/goblint-regression/04-mutex_41-pt_rwlock.i [2022-12-13 17:58:31,496 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac993345-699e-4323-9282-b57f5b135074/bin/uautomizer-uyxdKDjOR8/data/9f409f044/5cb4864b2e394852a3b2fef833e5958f/FLAGf45312277 [2022-12-13 17:58:31,843 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac993345-699e-4323-9282-b57f5b135074/bin/uautomizer-uyxdKDjOR8/data/9f409f044/5cb4864b2e394852a3b2fef833e5958f [2022-12-13 17:58:31,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:58:31,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:58:31,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:58:31,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:58:31,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:58:31,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:58:31" (1/1) ... [2022-12-13 17:58:31,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af44e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:58:31, skipping insertion in model container [2022-12-13 17:58:31,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:58:31" (1/1) ... [2022-12-13 17:58:31,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:58:31,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:58:32,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:58:32,181 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:58:32,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:58:32,263 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:58:32,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:58:32 WrapperNode [2022-12-13 17:58:32,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:58:32,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:58:32,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:58:32,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:58:32,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:58:32" (1/1) ... [2022-12-13 17:58:32,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:58:32" (1/1) ... [2022-12-13 17:58:32,293 INFO L138 Inliner]: procedures = 264, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-12-13 17:58:32,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:58:32,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:58:32,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:58:32,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:58:32,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:58:32" (1/1) ... [2022-12-13 17:58:32,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:58:32" (1/1) ... [2022-12-13 17:58:32,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:58:32" (1/1) ... [2022-12-13 17:58:32,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:58:32" (1/1) ... [2022-12-13 17:58:32,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:58:32" (1/1) ... [2022-12-13 17:58:32,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:58:32" (1/1) ... [2022-12-13 17:58:32,307 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:58:32" (1/1) ... [2022-12-13 17:58:32,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:58:32" (1/1) ... [2022-12-13 17:58:32,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:58:32,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:58:32,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:58:32,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:58:32,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:58:32" (1/1) ... [2022-12-13 17:58:32,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:58:32,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac993345-699e-4323-9282-b57f5b135074/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:58:32,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac993345-699e-4323-9282-b57f5b135074/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:58:32,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac993345-699e-4323-9282-b57f5b135074/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:58:32,374 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockReadLock [2022-12-13 17:58:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:58:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2022-12-13 17:58:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:58:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2022-12-13 17:58:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:58:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:58:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:58:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 17:58:32,376 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 17:58:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:58:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:58:32,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:58:32,377 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 17:58:32,480 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:58:32,481 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:58:32,601 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:58:32,607 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:58:32,607 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 17:58:32,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:58:32 BoogieIcfgContainer [2022-12-13 17:58:32,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:58:32,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:58:32,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:58:32,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:58:32,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:58:31" (1/3) ... [2022-12-13 17:58:32,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca0e072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:58:32, skipping insertion in model container [2022-12-13 17:58:32,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:58:32" (2/3) ... [2022-12-13 17:58:32,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca0e072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:58:32, skipping insertion in model container [2022-12-13 17:58:32,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:58:32" (3/3) ... [2022-12-13 17:58:32,617 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_41-pt_rwlock.i [2022-12-13 17:58:32,633 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:58:32,633 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-12-13 17:58:32,633 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:58:32,667 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 17:58:32,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 67 transitions, 142 flow [2022-12-13 17:58:32,717 INFO L130 PetriNetUnfolder]: 0/66 cut-off events. [2022-12-13 17:58:32,717 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:58:32,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 66 events. 0/66 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 17:58:32,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 67 transitions, 142 flow [2022-12-13 17:58:32,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 61 transitions, 128 flow [2022-12-13 17:58:32,725 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:58:32,733 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 61 transitions, 128 flow [2022-12-13 17:58:32,735 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 61 transitions, 128 flow [2022-12-13 17:58:32,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 61 transitions, 128 flow [2022-12-13 17:58:32,748 INFO L130 PetriNetUnfolder]: 0/61 cut-off events. [2022-12-13 17:58:32,748 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:58:32,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 61 events. 0/61 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 17:58:32,749 INFO L119 LiptonReduction]: Number of co-enabled transitions 286 [2022-12-13 17:58:34,415 INFO L134 LiptonReduction]: Checked pairs total: 335 [2022-12-13 17:58:34,416 INFO L136 LiptonReduction]: Total number of compositions: 61 [2022-12-13 17:58:34,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:58:34,431 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;@19fe0613, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:58:34,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 17:58:34,432 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 17:58:34,433 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:58:34,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:58:34,433 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 17:58:34,433 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-13 17:58:34,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:58:34,437 INFO L85 PathProgramCache]: Analyzing trace with hash 238, now seen corresponding path program 1 times [2022-12-13 17:58:34,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:58:34,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610649544] [2022-12-13 17:58:34,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:58:34,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:58:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:58:34,521 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 17:58:34,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:58:34,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610649544] [2022-12-13 17:58:34,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610649544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:58:34,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:58:34,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 17:58:34,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620628351] [2022-12-13 17:58:34,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:58:34,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 17:58:34,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:58:34,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 17:58:34,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:58:34,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 128 [2022-12-13 17:58:34,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 30 flow. Second operand has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 17:58:34,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:58:34,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 128 [2022-12-13 17:58:34,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:58:34,580 INFO L130 PetriNetUnfolder]: 8/26 cut-off events. [2022-12-13 17:58:34,580 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:58:34,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 26 events. 8/26 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 51 event pairs, 8 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 44. Up to 27 conditions per place. [2022-12-13 17:58:34,582 INFO L137 encePairwiseOnDemand]: 126/128 looper letters, 10 selfloop transitions, 0 changer transitions 0/10 dead transitions. [2022-12-13 17:58:34,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 10 transitions, 46 flow [2022-12-13 17:58:34,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 17:58:34,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 17:58:34,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 142 transitions. [2022-12-13 17:58:34,596 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2022-12-13 17:58:34,597 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 142 transitions. [2022-12-13 17:58:34,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 142 transitions. [2022-12-13 17:58:34,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:58:34,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 142 transitions. [2022-12-13 17:58:34,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 17:58:34,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:34,608 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:34,610 INFO L175 Difference]: Start difference. First operand has 16 places, 12 transitions, 30 flow. Second operand 2 states and 142 transitions. [2022-12-13 17:58:34,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 10 transitions, 46 flow [2022-12-13 17:58:34,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 10 transitions, 42 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:58:34,614 INFO L231 Difference]: Finished difference. Result has 13 places, 10 transitions, 22 flow [2022-12-13 17:58:34,616 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=22, PETRI_PLACES=13, PETRI_TRANSITIONS=10} [2022-12-13 17:58:34,619 INFO L288 CegarLoopForPetriNet]: 16 programPoint places, -3 predicate places. [2022-12-13 17:58:34,620 INFO L495 AbstractCegarLoop]: Abstraction has has 13 places, 10 transitions, 22 flow [2022-12-13 17:58:34,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 17:58:34,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:58:34,620 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:58:34,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:58:34,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-13 17:58:34,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:58:34,621 INFO L85 PathProgramCache]: Analyzing trace with hash 7266440, now seen corresponding path program 1 times [2022-12-13 17:58:34,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:58:34,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462063661] [2022-12-13 17:58:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:58:34,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:58:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:58:34,762 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 17:58:34,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:58:34,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462063661] [2022-12-13 17:58:34,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462063661] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:58:34,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:58:34,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:58:34,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435744881] [2022-12-13 17:58:34,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:58:34,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:58:34,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:58:34,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:58:34,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:58:34,790 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 128 [2022-12-13 17:58:34,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 10 transitions, 22 flow. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 17:58:34,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:58:34,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 128 [2022-12-13 17:58:34,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:58:34,809 INFO L130 PetriNetUnfolder]: 6/21 cut-off events. [2022-12-13 17:58:34,809 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:58:34,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 21 events. 6/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 31 event pairs, 6 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 43. Up to 20 conditions per place. [2022-12-13 17:58:34,810 INFO L137 encePairwiseOnDemand]: 125/128 looper letters, 7 selfloop transitions, 2 changer transitions 0/9 dead transitions. [2022-12-13 17:58:34,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 9 transitions, 38 flow [2022-12-13 17:58:34,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:58:34,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:58:34,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2022-12-13 17:58:34,812 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4713541666666667 [2022-12-13 17:58:34,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 181 transitions. [2022-12-13 17:58:34,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 181 transitions. [2022-12-13 17:58:34,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:58:34,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 181 transitions. [2022-12-13 17:58:34,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 17:58:34,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:58:34,815 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:58:34,815 INFO L175 Difference]: Start difference. First operand has 13 places, 10 transitions, 22 flow. Second operand 3 states and 181 transitions. [2022-12-13 17:58:34,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 9 transitions, 38 flow [2022-12-13 17:58:34,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 9 transitions, 38 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:58:34,816 INFO L231 Difference]: Finished difference. Result has 14 places, 9 transitions, 24 flow [2022-12-13 17:58:34,816 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=24, PETRI_PLACES=14, PETRI_TRANSITIONS=9} [2022-12-13 17:58:34,817 INFO L288 CegarLoopForPetriNet]: 16 programPoint places, -2 predicate places. [2022-12-13 17:58:34,817 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 9 transitions, 24 flow [2022-12-13 17:58:34,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 17:58:34,817 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:58:34,817 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:58:34,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:58:34,818 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-13 17:58:34,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:58:34,818 INFO L85 PathProgramCache]: Analyzing trace with hash 7266441, now seen corresponding path program 1 times [2022-12-13 17:58:34,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:58:34,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930801809] [2022-12-13 17:58:34,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:58:34,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:58:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:58:34,922 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 17:58:34,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:58:34,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930801809] [2022-12-13 17:58:34,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930801809] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:58:34,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:58:34,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:58:34,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335780393] [2022-12-13 17:58:34,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:58:34,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:58:34,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:58:34,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:58:34,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:58:34,940 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 128 [2022-12-13 17:58:34,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 9 transitions, 24 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 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 17:58:34,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:58:34,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 128 [2022-12-13 17:58:34,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:58:34,956 INFO L130 PetriNetUnfolder]: 4/16 cut-off events. [2022-12-13 17:58:34,956 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:58:34,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 16 events. 4/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 16 event pairs, 4 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 35. Up to 15 conditions per place. [2022-12-13 17:58:34,956 INFO L137 encePairwiseOnDemand]: 125/128 looper letters, 6 selfloop transitions, 2 changer transitions 0/8 dead transitions. [2022-12-13 17:58:34,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 8 transitions, 38 flow [2022-12-13 17:58:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:58:34,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:58:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2022-12-13 17:58:34,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2022-12-13 17:58:34,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2022-12-13 17:58:34,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2022-12-13 17:58:34,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:58:34,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2022-12-13 17:58:34,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 17:58:34,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:58:34,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:58:34,959 INFO L175 Difference]: Start difference. First operand has 14 places, 9 transitions, 24 flow. Second operand 3 states and 189 transitions. [2022-12-13 17:58:34,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 8 transitions, 38 flow [2022-12-13 17:58:34,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 8 transitions, 34 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:58:34,960 INFO L231 Difference]: Finished difference. Result has 13 places, 8 transitions, 22 flow [2022-12-13 17:58:34,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=22, PETRI_PLACES=13, PETRI_TRANSITIONS=8} [2022-12-13 17:58:34,960 INFO L288 CegarLoopForPetriNet]: 16 programPoint places, -3 predicate places. [2022-12-13 17:58:34,961 INFO L495 AbstractCegarLoop]: Abstraction has has 13 places, 8 transitions, 22 flow [2022-12-13 17:58:34,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 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 17:58:34,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:58:34,961 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:58:34,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:58:34,961 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-13 17:58:34,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:58:34,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1858034071, now seen corresponding path program 1 times [2022-12-13 17:58:34,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:58:34,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841214299] [2022-12-13 17:58:34,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:58:34,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:58:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:58:35,026 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 17:58:35,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:58:35,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841214299] [2022-12-13 17:58:35,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841214299] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:58:35,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:58:35,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:58:35,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78276988] [2022-12-13 17:58:35,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:58:35,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:58:35,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:58:35,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:58:35,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:58:35,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 128 [2022-12-13 17:58:35,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 8 transitions, 22 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 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 17:58:35,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:58:35,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 128 [2022-12-13 17:58:35,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:58:35,065 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 17:58:35,065 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:58:35,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 5/12 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2022-12-13 17:58:35,065 INFO L137 encePairwiseOnDemand]: 124/128 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2022-12-13 17:58:35,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 5 transitions, 23 flow [2022-12-13 17:58:35,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:58:35,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:58:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2022-12-13 17:58:35,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2022-12-13 17:58:35,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2022-12-13 17:58:35,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2022-12-13 17:58:35,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:58:35,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2022-12-13 17:58:35,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 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 17:58:35,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:58:35,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:58:35,072 INFO L175 Difference]: Start difference. First operand has 13 places, 8 transitions, 22 flow. Second operand 3 states and 188 transitions. [2022-12-13 17:58:35,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 5 transitions, 23 flow [2022-12-13 17:58:35,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 5 transitions, 22 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:58:35,072 INFO L231 Difference]: Finished difference. Result has 11 places, 0 transitions, 0 flow [2022-12-13 17:58:35,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=11, PETRI_TRANSITIONS=0} [2022-12-13 17:58:35,073 INFO L288 CegarLoopForPetriNet]: 16 programPoint places, -5 predicate places. [2022-12-13 17:58:35,073 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 0 transitions, 0 flow [2022-12-13 17:58:35,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 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 17:58:35,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2022-12-13 17:58:35,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2022-12-13 17:58:35,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2022-12-13 17:58:35,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2022-12-13 17:58:35,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2022-12-13 17:58:35,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2022-12-13 17:58:35,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:58:35,078 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 17:58:35,081 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 17:58:35,081 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 17:58:35,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 05:58:35 BasicIcfg [2022-12-13 17:58:35,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 17:58:35,085 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 17:58:35,085 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 17:58:35,086 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 17:58:35,086 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:58:32" (3/4) ... [2022-12-13 17:58:35,089 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 17:58:35,095 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-12-13 17:58:35,099 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-12-13 17:58:35,099 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 17:58:35,099 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 17:58:35,130 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac993345-699e-4323-9282-b57f5b135074/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 17:58:35,130 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 17:58:35,131 INFO L158 Benchmark]: Toolchain (without parser) took 3284.97ms. Allocated memory was 155.2MB in the beginning and 230.7MB in the end (delta: 75.5MB). Free memory was 118.2MB in the beginning and 166.8MB in the end (delta: -48.5MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2022-12-13 17:58:35,131 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 155.2MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:58:35,132 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.36ms. Allocated memory is still 155.2MB. Free memory was 118.2MB in the beginning and 91.1MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-13 17:58:35,132 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.83ms. Allocated memory is still 155.2MB. Free memory was 91.1MB in the beginning and 89.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:58:35,132 INFO L158 Benchmark]: Boogie Preprocessor took 16.43ms. Allocated memory is still 155.2MB. Free memory was 89.0MB in the beginning and 87.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:58:35,133 INFO L158 Benchmark]: RCFGBuilder took 299.20ms. Allocated memory is still 155.2MB. Free memory was 87.5MB in the beginning and 74.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 17:58:35,133 INFO L158 Benchmark]: TraceAbstraction took 2473.01ms. Allocated memory was 155.2MB in the beginning and 230.7MB in the end (delta: 75.5MB). Free memory was 73.3MB in the beginning and 169.9MB in the end (delta: -96.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:58:35,134 INFO L158 Benchmark]: Witness Printer took 44.68ms. Allocated memory is still 230.7MB. Free memory was 169.9MB in the beginning and 166.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 17:58:35,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 155.2MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 417.36ms. Allocated memory is still 155.2MB. Free memory was 118.2MB in the beginning and 91.1MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.83ms. Allocated memory is still 155.2MB. Free memory was 91.1MB in the beginning and 89.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.43ms. Allocated memory is still 155.2MB. Free memory was 89.0MB in the beginning and 87.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 299.20ms. Allocated memory is still 155.2MB. Free memory was 87.5MB in the beginning and 74.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2473.01ms. Allocated memory was 155.2MB in the beginning and 230.7MB in the end (delta: 75.5MB). Free memory was 73.3MB in the beginning and 169.9MB in the end (delta: -96.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 44.68ms. Allocated memory is still 230.7MB. Free memory was 169.9MB in the beginning and 166.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 65 PlacesBefore, 16 PlacesAfterwards, 61 TransitionsBefore, 12 TransitionsAfterwards, 286 CoEnabledTransitionPairs, 5 FixpointIterations, 41 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 61 TotalNumberOfCompositions, 335 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 281, independent: 241, independent conditional: 0, independent unconditional: 241, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 158, independent: 148, independent conditional: 0, independent unconditional: 148, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 281, independent: 93, independent conditional: 0, independent unconditional: 93, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 158, unknown conditional: 0, unknown unconditional: 158] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 927]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 81 locations, 6 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: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 32 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 57 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 17:58:35,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac993345-699e-4323-9282-b57f5b135074/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