./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 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_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 03:11:40,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:11:40,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:11:40,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:11:40,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:11:40,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:11:40,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:11:40,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:11:40,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:11:40,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:11:40,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:11:40,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:11:40,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:11:40,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:11:40,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:11:40,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:11:40,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:11:40,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:11:40,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:11:40,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:11:40,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:11:40,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:11:40,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:11:40,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:11:40,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:11:40,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:11:40,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:11:40,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:11:40,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:11:40,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:11:40,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:11:40,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:11:40,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:11:40,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:11:40,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:11:40,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:11:40,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:11:40,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:11:40,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:11:40,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:11:40,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:11:40,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-23 03:11:40,532 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:11:40,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:11:40,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:11:40,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:11:40,533 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:11:40,533 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:11:40,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:11:40,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:11:40,534 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:11:40,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:11:40,535 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:11:40,535 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:11:40,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:11:40,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:11:40,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:11:40,540 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 03:11:40,541 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 03:11:40,541 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 03:11:40,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:11:40,541 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 03:11:40,541 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:11:40,541 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:11:40,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:11:40,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:11:40,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:11:40,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:11:40,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:11:40,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:11:40,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:11:40,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:11:40,545 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:11:40,545 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:11:40,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:11:40,545 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_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf [2022-11-23 03:11:40,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:11:40,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:11:40,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:11:40,844 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:11:40,844 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:11:40,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i [2022-11-23 03:11:43,925 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:11:44,215 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:11:44,215 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i [2022-11-23 03:11:44,227 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS/data/c74c71d42/1939c003f2b44564a4438eb9fbc9db16/FLAGd174da074 [2022-11-23 03:11:44,243 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS/data/c74c71d42/1939c003f2b44564a4438eb9fbc9db16 [2022-11-23 03:11:44,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:11:44,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:11:44,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:11:44,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:11:44,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:11:44,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:11:44" (1/1) ... [2022-11-23 03:11:44,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147e46b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:44, skipping insertion in model container [2022-11-23 03:11:44,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:11:44" (1/1) ... [2022-11-23 03:11:44,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:11:44,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:11:44,470 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i[1096,1109] [2022-11-23 03:11:44,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:11:44,676 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:11:44,691 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i[1096,1109] [2022-11-23 03:11:44,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:11:44,760 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:11:44,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:44 WrapperNode [2022-11-23 03:11:44,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:11:44,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:11:44,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:11:44,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:11:44,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:44" (1/1) ... [2022-11-23 03:11:44,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:44" (1/1) ... [2022-11-23 03:11:44,846 INFO L138 Inliner]: procedures = 162, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 90 [2022-11-23 03:11:44,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:11:44,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:11:44,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:11:44,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:11:44,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:44" (1/1) ... [2022-11-23 03:11:44,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:44" (1/1) ... [2022-11-23 03:11:44,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:44" (1/1) ... [2022-11-23 03:11:44,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:44" (1/1) ... [2022-11-23 03:11:44,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:44" (1/1) ... [2022-11-23 03:11:44,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:44" (1/1) ... [2022-11-23 03:11:44,890 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:44" (1/1) ... [2022-11-23 03:11:44,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:44" (1/1) ... [2022-11-23 03:11:44,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:11:44,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:11:44,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:11:44,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:11:44,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:44" (1/1) ... [2022-11-23 03:11:44,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:11:44,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:11:44,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:11:44,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:11:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:11:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:11:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 03:11:44,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:11:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:11:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-23 03:11:44,984 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-23 03:11:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:11:44,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:11:44,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:11:44,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:11:44,987 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 03:11:45,152 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:11:45,154 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:11:45,547 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:11:45,562 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:11:45,562 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 03:11:45,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:11:45 BoogieIcfgContainer [2022-11-23 03:11:45,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:11:45,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:11:45,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:11:45,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:11:45,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:11:44" (1/3) ... [2022-11-23 03:11:45,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c15923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:11:45, skipping insertion in model container [2022-11-23 03:11:45,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:44" (2/3) ... [2022-11-23 03:11:45,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c15923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:11:45, skipping insertion in model container [2022-11-23 03:11:45,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:11:45" (3/3) ... [2022-11-23 03:11:45,573 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2022-11-23 03:11:45,593 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:11:45,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-11-23 03:11:45,593 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:11:45,653 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-23 03:11:45,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 151 transitions, 310 flow [2022-11-23 03:11:45,824 INFO L130 PetriNetUnfolder]: 4/150 cut-off events. [2022-11-23 03:11:45,828 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 03:11:45,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 150 events. 4/150 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 126 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2022-11-23 03:11:45,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 151 transitions, 310 flow [2022-11-23 03:11:45,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 145 transitions, 296 flow [2022-11-23 03:11:45,851 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:11:45,883 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 145 transitions, 296 flow [2022-11-23 03:11:45,892 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 145 transitions, 296 flow [2022-11-23 03:11:45,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 145 transitions, 296 flow [2022-11-23 03:11:46,005 INFO L130 PetriNetUnfolder]: 4/145 cut-off events. [2022-11-23 03:11:46,007 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 03:11:46,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 145 events. 4/145 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 125 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2022-11-23 03:11:46,013 INFO L119 LiptonReduction]: Number of co-enabled transitions 4158 [2022-11-23 03:11:51,436 INFO L134 LiptonReduction]: Checked pairs total: 19650 [2022-11-23 03:11:51,436 INFO L136 LiptonReduction]: Total number of compositions: 140 [2022-11-23 03:11:51,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:11:51,461 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;@b7508a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:11:51,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-23 03:11:51,464 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-23 03:11:51,465 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:11:51,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:11:51,466 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-23 03:11:51,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-11-23 03:11:51,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:51,472 INFO L85 PathProgramCache]: Analyzing trace with hash 520, now seen corresponding path program 1 times [2022-11-23 03:11:51,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:51,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186163160] [2022-11-23 03:11:51,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:51,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:51,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:51,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186163160] [2022-11-23 03:11:51,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186163160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:11:51,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:11:51,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 03:11:51,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054000278] [2022-11-23 03:11:51,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:11:51,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:11:51,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:51,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:11:51,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:11:51,634 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 291 [2022-11-23 03:11:51,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:51,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:11:51,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 291 [2022-11-23 03:11:51,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:11:51,833 INFO L130 PetriNetUnfolder]: 252/588 cut-off events. [2022-11-23 03:11:51,834 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 03:11:51,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 588 events. 252/588 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2595 event pairs, 252 based on Foata normal form. 0/504 useless extension candidates. Maximal degree in co-relation 1121. Up to 542 conditions per place. [2022-11-23 03:11:51,844 INFO L137 encePairwiseOnDemand]: 286/291 looper letters, 37 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2022-11-23 03:11:51,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 164 flow [2022-11-23 03:11:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:11:51,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 03:11:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 324 transitions. [2022-11-23 03:11:51,868 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5567010309278351 [2022-11-23 03:11:51,869 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 324 transitions. [2022-11-23 03:11:51,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 324 transitions. [2022-11-23 03:11:51,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:11:51,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 324 transitions. [2022-11-23 03:11:51,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 162.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:51,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:51,890 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:51,893 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 100 flow. Second operand 2 states and 324 transitions. [2022-11-23 03:11:51,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 164 flow [2022-11-23 03:11:51,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:11:51,904 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 86 flow [2022-11-23 03:11:51,906 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2022-11-23 03:11:51,910 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2022-11-23 03:11:51,911 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 86 flow [2022-11-23 03:11:51,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:51,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:11:51,911 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 03:11:51,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:11:51,912 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-11-23 03:11:51,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:51,923 INFO L85 PathProgramCache]: Analyzing trace with hash 492193538, now seen corresponding path program 1 times [2022-11-23 03:11:51,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:51,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209543198] [2022-11-23 03:11:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:51,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:52,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:52,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209543198] [2022-11-23 03:11:52,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209543198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:11:52,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:11:52,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:11:52,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775182164] [2022-11-23 03:11:52,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:11:52,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:11:52,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:52,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:11:52,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:11:52,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 291 [2022-11-23 03:11:52,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:52,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:11:52,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 291 [2022-11-23 03:11:52,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:11:52,441 INFO L130 PetriNetUnfolder]: 243/606 cut-off events. [2022-11-23 03:11:52,441 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:11:52,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 606 events. 243/606 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2834 event pairs, 63 based on Foata normal form. 0/535 useless extension candidates. Maximal degree in co-relation 1130. Up to 430 conditions per place. [2022-11-23 03:11:52,444 INFO L137 encePairwiseOnDemand]: 286/291 looper letters, 53 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2022-11-23 03:11:52,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 232 flow [2022-11-23 03:11:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:11:52,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:11:52,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2022-11-23 03:11:52,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5406643757159221 [2022-11-23 03:11:52,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2022-11-23 03:11:52,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2022-11-23 03:11:52,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:11:52,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2022-11-23 03:11:52,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:52,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:52,452 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:52,453 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 86 flow. Second operand 3 states and 472 transitions. [2022-11-23 03:11:52,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 232 flow [2022-11-23 03:11:52,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 232 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:11:52,455 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 98 flow [2022-11-23 03:11:52,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2022-11-23 03:11:52,455 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2022-11-23 03:11:52,456 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 98 flow [2022-11-23 03:11:52,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:52,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:11:52,456 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:11:52,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:11:52,457 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-11-23 03:11:52,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:52,457 INFO L85 PathProgramCache]: Analyzing trace with hash -69410724, now seen corresponding path program 1 times [2022-11-23 03:11:52,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:52,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060579787] [2022-11-23 03:11:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:52,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:52,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:52,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060579787] [2022-11-23 03:11:52,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060579787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:11:52,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:11:52,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:11:52,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22447065] [2022-11-23 03:11:52,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:11:52,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:11:52,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:52,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:11:52,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:11:52,619 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 291 [2022-11-23 03:11:52,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:52,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:11:52,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 291 [2022-11-23 03:11:52,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:11:52,831 INFO L130 PetriNetUnfolder]: 397/849 cut-off events. [2022-11-23 03:11:52,831 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-11-23 03:11:52,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 849 events. 397/849 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3910 event pairs, 208 based on Foata normal form. 6/795 useless extension candidates. Maximal degree in co-relation 1810. Up to 690 conditions per place. [2022-11-23 03:11:52,836 INFO L137 encePairwiseOnDemand]: 275/291 looper letters, 62 selfloop transitions, 16 changer transitions 0/78 dead transitions. [2022-11-23 03:11:52,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 78 transitions, 335 flow [2022-11-23 03:11:52,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:11:52,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:11:52,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2022-11-23 03:11:52,838 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5246277205040092 [2022-11-23 03:11:52,839 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2022-11-23 03:11:52,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2022-11-23 03:11:52,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:11:52,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2022-11-23 03:11:52,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:52,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:52,844 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:52,844 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 98 flow. Second operand 3 states and 458 transitions. [2022-11-23 03:11:52,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 78 transitions, 335 flow [2022-11-23 03:11:52,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 78 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:11:52,850 INFO L231 Difference]: Finished difference. Result has 49 places, 56 transitions, 198 flow [2022-11-23 03:11:52,850 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=49, PETRI_TRANSITIONS=56} [2022-11-23 03:11:52,851 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2022-11-23 03:11:52,852 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 56 transitions, 198 flow [2022-11-23 03:11:52,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:52,852 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:11:52,853 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:11:52,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:11:52,853 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-11-23 03:11:52,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:52,854 INFO L85 PathProgramCache]: Analyzing trace with hash 411241072, now seen corresponding path program 1 times [2022-11-23 03:11:52,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:52,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524106528] [2022-11-23 03:11:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:52,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:53,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:53,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524106528] [2022-11-23 03:11:53,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524106528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:11:53,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:11:53,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:11:53,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568131682] [2022-11-23 03:11:53,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:11:53,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:11:53,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:53,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:11:53,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:11:53,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 291 [2022-11-23 03:11:53,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 56 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:53,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:11:53,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 291 [2022-11-23 03:11:53,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:11:53,398 INFO L130 PetriNetUnfolder]: 237/573 cut-off events. [2022-11-23 03:11:53,398 INFO L131 PetriNetUnfolder]: For 116/124 co-relation queries the response was YES. [2022-11-23 03:11:53,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1446 conditions, 573 events. 237/573 cut-off events. For 116/124 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2775 event pairs, 80 based on Foata normal form. 15/533 useless extension candidates. Maximal degree in co-relation 1440. Up to 301 conditions per place. [2022-11-23 03:11:53,402 INFO L137 encePairwiseOnDemand]: 282/291 looper letters, 66 selfloop transitions, 13 changer transitions 0/84 dead transitions. [2022-11-23 03:11:53,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 84 transitions, 426 flow [2022-11-23 03:11:53,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:11:53,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:11:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 606 transitions. [2022-11-23 03:11:53,409 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.520618556701031 [2022-11-23 03:11:53,409 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 606 transitions. [2022-11-23 03:11:53,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 606 transitions. [2022-11-23 03:11:53,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:11:53,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 606 transitions. [2022-11-23 03:11:53,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:53,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:53,415 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:53,417 INFO L175 Difference]: Start difference. First operand has 49 places, 56 transitions, 198 flow. Second operand 4 states and 606 transitions. [2022-11-23 03:11:53,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 84 transitions, 426 flow [2022-11-23 03:11:53,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 84 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:11:53,422 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 236 flow [2022-11-23 03:11:53,422 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2022-11-23 03:11:53,423 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2022-11-23 03:11:53,423 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 236 flow [2022-11-23 03:11:53,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:53,423 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:11:53,424 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:11:53,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:11:53,424 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-11-23 03:11:53,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1429896155, now seen corresponding path program 1 times [2022-11-23 03:11:53,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:53,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022047296] [2022-11-23 03:11:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:53,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:53,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:53,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022047296] [2022-11-23 03:11:53,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022047296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:11:53,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:11:53,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:11:53,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378681778] [2022-11-23 03:11:53,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:11:53,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:11:53,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:53,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:11:53,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:11:53,522 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 291 [2022-11-23 03:11:53,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:53,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:11:53,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 291 [2022-11-23 03:11:53,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:11:53,711 INFO L130 PetriNetUnfolder]: 266/655 cut-off events. [2022-11-23 03:11:53,711 INFO L131 PetriNetUnfolder]: For 193/197 co-relation queries the response was YES. [2022-11-23 03:11:53,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1824 conditions, 655 events. 266/655 cut-off events. For 193/197 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3185 event pairs, 107 based on Foata normal form. 0/591 useless extension candidates. Maximal degree in co-relation 1817. Up to 309 conditions per place. [2022-11-23 03:11:53,716 INFO L137 encePairwiseOnDemand]: 286/291 looper letters, 71 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2022-11-23 03:11:53,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 84 transitions, 483 flow [2022-11-23 03:11:53,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:11:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:11:53,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2022-11-23 03:11:53,719 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5475372279495991 [2022-11-23 03:11:53,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2022-11-23 03:11:53,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2022-11-23 03:11:53,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:11:53,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2022-11-23 03:11:53,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:53,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:53,725 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:53,725 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 236 flow. Second operand 3 states and 478 transitions. [2022-11-23 03:11:53,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 84 transitions, 483 flow [2022-11-23 03:11:53,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 84 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:11:53,732 INFO L231 Difference]: Finished difference. Result has 55 places, 59 transitions, 261 flow [2022-11-23 03:11:53,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=55, PETRI_TRANSITIONS=59} [2022-11-23 03:11:53,735 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2022-11-23 03:11:53,736 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 59 transitions, 261 flow [2022-11-23 03:11:53,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:53,736 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:11:53,736 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:11:53,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:11:53,737 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-11-23 03:11:53,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:53,737 INFO L85 PathProgramCache]: Analyzing trace with hash 199232688, now seen corresponding path program 1 times [2022-11-23 03:11:53,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:53,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042770485] [2022-11-23 03:11:53,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:53,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:53,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:53,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042770485] [2022-11-23 03:11:53,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042770485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:11:53,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:11:53,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:11:53,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607870977] [2022-11-23 03:11:53,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:11:53,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:11:53,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:53,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:11:53,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:11:53,948 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 291 [2022-11-23 03:11:53,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 59 transitions, 261 flow. Second operand has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:53,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:11:53,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 291 [2022-11-23 03:11:53,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:11:54,151 INFO L130 PetriNetUnfolder]: 236/600 cut-off events. [2022-11-23 03:11:54,151 INFO L131 PetriNetUnfolder]: For 262/265 co-relation queries the response was YES. [2022-11-23 03:11:54,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 600 events. 236/600 cut-off events. For 262/265 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2877 event pairs, 180 based on Foata normal form. 35/577 useless extension candidates. Maximal degree in co-relation 1764. Up to 459 conditions per place. [2022-11-23 03:11:54,155 INFO L137 encePairwiseOnDemand]: 284/291 looper letters, 63 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2022-11-23 03:11:54,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 491 flow [2022-11-23 03:11:54,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:11:54,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:11:54,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 730 transitions. [2022-11-23 03:11:54,158 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5017182130584192 [2022-11-23 03:11:54,158 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 730 transitions. [2022-11-23 03:11:54,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 730 transitions. [2022-11-23 03:11:54,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:11:54,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 730 transitions. [2022-11-23 03:11:54,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,165 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,165 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 261 flow. Second operand 5 states and 730 transitions. [2022-11-23 03:11:54,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 491 flow [2022-11-23 03:11:54,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 483 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:11:54,168 INFO L231 Difference]: Finished difference. Result has 56 places, 57 transitions, 258 flow [2022-11-23 03:11:54,168 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=56, PETRI_TRANSITIONS=57} [2022-11-23 03:11:54,169 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 8 predicate places. [2022-11-23 03:11:54,169 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 57 transitions, 258 flow [2022-11-23 03:11:54,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:11:54,170 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:11:54,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:11:54,170 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-11-23 03:11:54,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:54,171 INFO L85 PathProgramCache]: Analyzing trace with hash 2090775037, now seen corresponding path program 1 times [2022-11-23 03:11:54,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:54,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806065858] [2022-11-23 03:11:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:54,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:54,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:54,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:54,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806065858] [2022-11-23 03:11:54,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806065858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:11:54,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:11:54,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:11:54,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723949083] [2022-11-23 03:11:54,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:11:54,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:11:54,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:54,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:11:54,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:11:54,356 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 291 [2022-11-23 03:11:54,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:11:54,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 291 [2022-11-23 03:11:54,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:11:54,468 INFO L130 PetriNetUnfolder]: 212/544 cut-off events. [2022-11-23 03:11:54,468 INFO L131 PetriNetUnfolder]: For 202/205 co-relation queries the response was YES. [2022-11-23 03:11:54,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1591 conditions, 544 events. 212/544 cut-off events. For 202/205 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2484 event pairs, 181 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 1582. Up to 477 conditions per place. [2022-11-23 03:11:54,472 INFO L137 encePairwiseOnDemand]: 288/291 looper letters, 43 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2022-11-23 03:11:54,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 328 flow [2022-11-23 03:11:54,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:11:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:11:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2022-11-23 03:11:54,475 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5074455899198167 [2022-11-23 03:11:54,475 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2022-11-23 03:11:54,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2022-11-23 03:11:54,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:11:54,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2022-11-23 03:11:54,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,479 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 258 flow. Second operand 3 states and 443 transitions. [2022-11-23 03:11:54,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 328 flow [2022-11-23 03:11:54,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 54 transitions, 320 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-23 03:11:54,482 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 234 flow [2022-11-23 03:11:54,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=53, PETRI_TRANSITIONS=54} [2022-11-23 03:11:54,483 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 5 predicate places. [2022-11-23 03:11:54,483 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 234 flow [2022-11-23 03:11:54,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,484 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:11:54,484 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:11:54,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 03:11:54,484 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-11-23 03:11:54,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:54,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2090775036, now seen corresponding path program 1 times [2022-11-23 03:11:54,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:54,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79478833] [2022-11-23 03:11:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:54,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:54,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:54,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79478833] [2022-11-23 03:11:54,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79478833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:11:54,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:11:54,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:11:54,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174137837] [2022-11-23 03:11:54,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:11:54,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:11:54,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:54,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:11:54,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:11:54,584 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 291 [2022-11-23 03:11:54,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 54 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:11:54,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 291 [2022-11-23 03:11:54,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:11:54,681 INFO L130 PetriNetUnfolder]: 188/490 cut-off events. [2022-11-23 03:11:54,681 INFO L131 PetriNetUnfolder]: For 172/175 co-relation queries the response was YES. [2022-11-23 03:11:54,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 490 events. 188/490 cut-off events. For 172/175 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2183 event pairs, 163 based on Foata normal form. 0/478 useless extension candidates. Maximal degree in co-relation 1366. Up to 431 conditions per place. [2022-11-23 03:11:54,684 INFO L137 encePairwiseOnDemand]: 288/291 looper letters, 40 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2022-11-23 03:11:54,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 298 flow [2022-11-23 03:11:54,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:11:54,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:11:54,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2022-11-23 03:11:54,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4959908361970218 [2022-11-23 03:11:54,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2022-11-23 03:11:54,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2022-11-23 03:11:54,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:11:54,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2022-11-23 03:11:54,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,690 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,690 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 234 flow. Second operand 3 states and 433 transitions. [2022-11-23 03:11:54,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 298 flow [2022-11-23 03:11:54,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:11:54,693 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 214 flow [2022-11-23 03:11:54,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2022-11-23 03:11:54,694 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2022-11-23 03:11:54,694 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 214 flow [2022-11-23 03:11:54,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:11:54,695 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:11:54,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 03:11:54,695 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-11-23 03:11:54,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:54,695 INFO L85 PathProgramCache]: Analyzing trace with hash 2091827816, now seen corresponding path program 1 times [2022-11-23 03:11:54,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:54,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629016745] [2022-11-23 03:11:54,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:54,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:54,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:54,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:54,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629016745] [2022-11-23 03:11:54,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629016745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:11:54,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:11:54,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:11:54,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817784435] [2022-11-23 03:11:54,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:11:54,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:11:54,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:54,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:11:54,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:11:54,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 291 [2022-11-23 03:11:54,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:11:54,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 291 [2022-11-23 03:11:54,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:11:54,977 INFO L130 PetriNetUnfolder]: 126/407 cut-off events. [2022-11-23 03:11:54,977 INFO L131 PetriNetUnfolder]: For 184/184 co-relation queries the response was YES. [2022-11-23 03:11:54,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1223 conditions, 407 events. 126/407 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1836 event pairs, 40 based on Foata normal form. 49/451 useless extension candidates. Maximal degree in co-relation 1214. Up to 227 conditions per place. [2022-11-23 03:11:54,980 INFO L137 encePairwiseOnDemand]: 271/291 looper letters, 52 selfloop transitions, 29 changer transitions 0/81 dead transitions. [2022-11-23 03:11:54,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 81 transitions, 512 flow [2022-11-23 03:11:54,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:11:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:11:54,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2022-11-23 03:11:54,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4936998854524628 [2022-11-23 03:11:54,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2022-11-23 03:11:54,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2022-11-23 03:11:54,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:11:54,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2022-11-23 03:11:54,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,987 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 214 flow. Second operand 3 states and 431 transitions. [2022-11-23 03:11:54,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 81 transitions, 512 flow [2022-11-23 03:11:54,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 81 transitions, 508 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:11:54,990 INFO L231 Difference]: Finished difference. Result has 53 places, 67 transitions, 415 flow [2022-11-23 03:11:54,991 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=415, PETRI_PLACES=53, PETRI_TRANSITIONS=67} [2022-11-23 03:11:54,991 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 5 predicate places. [2022-11-23 03:11:54,991 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 67 transitions, 415 flow [2022-11-23 03:11:54,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:54,992 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:11:54,992 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:11:54,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 03:11:54,993 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-11-23 03:11:54,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:54,993 INFO L85 PathProgramCache]: Analyzing trace with hash 422083646, now seen corresponding path program 1 times [2022-11-23 03:11:54,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:54,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913200211] [2022-11-23 03:11:54,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:54,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:55,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:55,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913200211] [2022-11-23 03:11:55,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913200211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:11:55,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:11:55,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:11:55,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724859254] [2022-11-23 03:11:55,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:11:55,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:11:55,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:55,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:11:55,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:11:55,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 291 [2022-11-23 03:11:55,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 67 transitions, 415 flow. Second operand has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:55,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:11:55,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 291 [2022-11-23 03:11:55,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:11:55,503 INFO L130 PetriNetUnfolder]: 103/345 cut-off events. [2022-11-23 03:11:55,503 INFO L131 PetriNetUnfolder]: For 300/300 co-relation queries the response was YES. [2022-11-23 03:11:55,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 345 events. 103/345 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1480 event pairs, 33 based on Foata normal form. 4/344 useless extension candidates. Maximal degree in co-relation 1303. Up to 294 conditions per place. [2022-11-23 03:11:55,506 INFO L137 encePairwiseOnDemand]: 286/291 looper letters, 61 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2022-11-23 03:11:55,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 67 transitions, 521 flow [2022-11-23 03:11:55,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:11:55,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:11:55,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 542 transitions. [2022-11-23 03:11:55,509 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46563573883161513 [2022-11-23 03:11:55,509 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 542 transitions. [2022-11-23 03:11:55,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 542 transitions. [2022-11-23 03:11:55,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:11:55,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 542 transitions. [2022-11-23 03:11:55,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:55,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:55,514 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:55,514 INFO L175 Difference]: Start difference. First operand has 53 places, 67 transitions, 415 flow. Second operand 4 states and 542 transitions. [2022-11-23 03:11:55,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 67 transitions, 521 flow [2022-11-23 03:11:55,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 482 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-23 03:11:55,518 INFO L231 Difference]: Finished difference. Result has 52 places, 56 transitions, 306 flow [2022-11-23 03:11:55,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=52, PETRI_TRANSITIONS=56} [2022-11-23 03:11:55,519 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2022-11-23 03:11:55,519 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 56 transitions, 306 flow [2022-11-23 03:11:55,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:55,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:11:55,520 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:11:55,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 03:11:55,520 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-11-23 03:11:55,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:55,521 INFO L85 PathProgramCache]: Analyzing trace with hash -730836768, now seen corresponding path program 1 times [2022-11-23 03:11:55,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:55,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999022186] [2022-11-23 03:11:55,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:55,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:55,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:55,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:55,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999022186] [2022-11-23 03:11:55,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999022186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:11:55,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:11:55,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:11:55,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287643520] [2022-11-23 03:11:55,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:11:55,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:11:55,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:55,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:11:55,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:11:55,956 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 291 [2022-11-23 03:11:55,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 56 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:55,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:11:55,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 291 [2022-11-23 03:11:55,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:11:56,092 INFO L130 PetriNetUnfolder]: 37/195 cut-off events. [2022-11-23 03:11:56,092 INFO L131 PetriNetUnfolder]: For 211/211 co-relation queries the response was YES. [2022-11-23 03:11:56,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 195 events. 37/195 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 663 event pairs, 7 based on Foata normal form. 14/207 useless extension candidates. Maximal degree in co-relation 690. Up to 121 conditions per place. [2022-11-23 03:11:56,094 INFO L137 encePairwiseOnDemand]: 286/291 looper letters, 50 selfloop transitions, 11 changer transitions 0/61 dead transitions. [2022-11-23 03:11:56,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 452 flow [2022-11-23 03:11:56,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:11:56,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:11:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2022-11-23 03:11:56,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46649484536082475 [2022-11-23 03:11:56,097 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 543 transitions. [2022-11-23 03:11:56,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 543 transitions. [2022-11-23 03:11:56,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:11:56,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 543 transitions. [2022-11-23 03:11:56,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:56,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:56,101 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:56,102 INFO L175 Difference]: Start difference. First operand has 52 places, 56 transitions, 306 flow. Second operand 4 states and 543 transitions. [2022-11-23 03:11:56,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 452 flow [2022-11-23 03:11:56,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 422 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-23 03:11:56,110 INFO L231 Difference]: Finished difference. Result has 52 places, 52 transitions, 276 flow [2022-11-23 03:11:56,110 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=52, PETRI_TRANSITIONS=52} [2022-11-23 03:11:56,111 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2022-11-23 03:11:56,111 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 52 transitions, 276 flow [2022-11-23 03:11:56,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:56,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:11:56,112 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:11:56,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 03:11:56,112 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-11-23 03:11:56,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:56,113 INFO L85 PathProgramCache]: Analyzing trace with hash -132476340, now seen corresponding path program 1 times [2022-11-23 03:11:56,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:56,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199108396] [2022-11-23 03:11:56,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:56,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:56,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:56,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199108396] [2022-11-23 03:11:56,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199108396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:11:56,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:11:56,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:11:56,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006135681] [2022-11-23 03:11:56,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:11:56,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:11:56,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:56,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:11:56,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:11:56,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 291 [2022-11-23 03:11:56,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 52 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:56,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:11:56,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 291 [2022-11-23 03:11:56,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:11:56,461 INFO L130 PetriNetUnfolder]: 37/193 cut-off events. [2022-11-23 03:11:56,462 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-11-23 03:11:56,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 193 events. 37/193 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 637 event pairs, 18 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 650. Up to 139 conditions per place. [2022-11-23 03:11:56,463 INFO L137 encePairwiseOnDemand]: 287/291 looper letters, 50 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2022-11-23 03:11:56,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 433 flow [2022-11-23 03:11:56,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:11:56,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:11:56,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2022-11-23 03:11:56,466 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5085910652920962 [2022-11-23 03:11:56,466 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2022-11-23 03:11:56,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2022-11-23 03:11:56,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:11:56,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2022-11-23 03:11:56,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:56,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:56,472 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:56,473 INFO L175 Difference]: Start difference. First operand has 52 places, 52 transitions, 276 flow. Second operand 4 states and 592 transitions. [2022-11-23 03:11:56,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 433 flow [2022-11-23 03:11:56,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:11:56,475 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 267 flow [2022-11-23 03:11:56,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2022-11-23 03:11:56,477 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2022-11-23 03:11:56,478 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 267 flow [2022-11-23 03:11:56,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:56,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:11:56,480 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:11:56,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 03:11:56,480 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2022-11-23 03:11:56,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:11:56,481 INFO L85 PathProgramCache]: Analyzing trace with hash -544723978, now seen corresponding path program 1 times [2022-11-23 03:11:56,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:11:56,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140078509] [2022-11-23 03:11:56,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:11:56,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:11:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:11:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:11:56,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:11:56,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140078509] [2022-11-23 03:11:56,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140078509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:11:56,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:11:56,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:11:56,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886151609] [2022-11-23 03:11:56,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:11:56,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:11:56,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:11:56,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:11:56,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:11:56,732 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 291 [2022-11-23 03:11:56,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:56,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:11:56,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 291 [2022-11-23 03:11:56,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:11:56,801 INFO L130 PetriNetUnfolder]: 37/191 cut-off events. [2022-11-23 03:11:56,801 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2022-11-23 03:11:56,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 191 events. 37/191 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 621 event pairs, 25 based on Foata normal form. 2/193 useless extension candidates. Maximal degree in co-relation 648. Up to 173 conditions per place. [2022-11-23 03:11:56,802 INFO L137 encePairwiseOnDemand]: 289/291 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2022-11-23 03:11:56,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 349 flow [2022-11-23 03:11:56,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:11:56,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:11:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-11-23 03:11:56,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5063001145475372 [2022-11-23 03:11:56,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-11-23 03:11:56,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-11-23 03:11:56,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:11:56,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-11-23 03:11:56,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:56,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:56,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:56,809 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 267 flow. Second operand 3 states and 442 transitions. [2022-11-23 03:11:56,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 349 flow [2022-11-23 03:11:56,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 343 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-23 03:11:56,811 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2022-11-23 03:11:56,811 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2022-11-23 03:11:56,812 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2022-11-23 03:11:56,813 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2022-11-23 03:11:56,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:56,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2022-11-23 03:11:56,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2022-11-23 03:11:56,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (7 of 10 remaining) [2022-11-23 03:11:56,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2022-11-23 03:11:56,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2022-11-23 03:11:56,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2022-11-23 03:11:56,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2022-11-23 03:11:56,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2022-11-23 03:11:56,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2022-11-23 03:11:56,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-23 03:11:56,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 03:11:56,819 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:11:56,822 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 03:11:56,823 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:11:56,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:11:56 BasicIcfg [2022-11-23 03:11:56,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:11:56,833 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:11:56,833 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:11:56,833 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:11:56,834 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:11:45" (3/4) ... [2022-11-23 03:11:56,837 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 03:11:56,844 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-23 03:11:56,851 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-23 03:11:56,852 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-23 03:11:56,852 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 03:11:56,852 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 03:11:56,902 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 03:11:56,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:11:56,903 INFO L158 Benchmark]: Toolchain (without parser) took 12656.23ms. Allocated memory was 163.6MB in the beginning and 224.4MB in the end (delta: 60.8MB). Free memory was 130.9MB in the beginning and 118.7MB in the end (delta: 12.2MB). Peak memory consumption was 75.6MB. Max. memory is 16.1GB. [2022-11-23 03:11:56,903 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:11:56,904 INFO L158 Benchmark]: CACSL2BoogieTranslator took 513.01ms. Allocated memory is still 163.6MB. Free memory was 130.9MB in the beginning and 111.1MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-23 03:11:56,904 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.15ms. Allocated memory is still 163.6MB. Free memory was 111.1MB in the beginning and 108.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:11:56,905 INFO L158 Benchmark]: Boogie Preprocessor took 47.05ms. Allocated memory is still 163.6MB. Free memory was 108.5MB in the beginning and 107.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:11:56,905 INFO L158 Benchmark]: RCFGBuilder took 668.76ms. Allocated memory is still 163.6MB. Free memory was 107.3MB in the beginning and 89.2MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 03:11:56,905 INFO L158 Benchmark]: TraceAbstraction took 11266.11ms. Allocated memory was 163.6MB in the beginning and 224.4MB in the end (delta: 60.8MB). Free memory was 88.8MB in the beginning and 121.9MB in the end (delta: -33.1MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2022-11-23 03:11:56,906 INFO L158 Benchmark]: Witness Printer took 69.57ms. Allocated memory is still 224.4MB. Free memory was 121.9MB in the beginning and 118.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 03:11:56,907 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 513.01ms. Allocated memory is still 163.6MB. Free memory was 130.9MB in the beginning and 111.1MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.15ms. Allocated memory is still 163.6MB. Free memory was 111.1MB in the beginning and 108.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.05ms. Allocated memory is still 163.6MB. Free memory was 108.5MB in the beginning and 107.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 668.76ms. Allocated memory is still 163.6MB. Free memory was 107.3MB in the beginning and 89.2MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 11266.11ms. Allocated memory was 163.6MB in the beginning and 224.4MB in the end (delta: 60.8MB). Free memory was 88.8MB in the beginning and 121.9MB in the end (delta: -33.1MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. * Witness Printer took 69.57ms. Allocated memory is still 224.4MB. Free memory was 121.9MB in the beginning and 118.7MB 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: 5.5s, 145 PlacesBefore, 48 PlacesAfterwards, 145 TransitionsBefore, 47 TransitionsAfterwards, 4158 CoEnabledTransitionPairs, 12 FixpointIterations, 51 TrivialSequentialCompositions, 71 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 1 ChoiceCompositions, 140 TotalNumberOfCompositions, 19650 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5505, independent: 4766, independent conditional: 0, independent unconditional: 4766, dependent: 739, dependent conditional: 0, dependent unconditional: 739, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2741, independent: 2639, independent conditional: 0, independent unconditional: 2639, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2741, independent: 2474, independent conditional: 0, independent unconditional: 2474, dependent: 267, dependent conditional: 0, dependent unconditional: 267, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 267, independent: 165, independent conditional: 0, independent unconditional: 165, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 574, independent: 274, independent conditional: 0, independent unconditional: 274, dependent: 300, dependent conditional: 0, dependent unconditional: 300, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5505, independent: 2127, independent conditional: 0, independent unconditional: 2127, dependent: 637, dependent conditional: 0, dependent unconditional: 637, unknown: 2741, unknown conditional: 0, unknown unconditional: 2741] , Statistics on independence cache: Total cache size (in pairs): 287, Positive cache size: 232, Positive conditional cache size: 0, Positive unconditional cache size: 232, Negative cache size: 55, Negative conditional cache size: 0, Negative unconditional cache size: 55, 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: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 704]: 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, 183 locations, 10 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: 11.1s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 917 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 533 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 255 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1668 IncrementalHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 255 mSolverCounterUnsat, 13 mSDtfsCounter, 1668 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=415occurred in iteration=9, InterpolantAutomatonStates: 44, 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, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 213 NumberOfCodeBlocks, 213 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 1157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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! [2022-11-23 03:11:56,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef29ddb1-e23c-4dcd-a518-bd646be97f2d/bin/uautomizer-QkZJyEgLgS/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