./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --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 f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:15:29,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:15:29,295 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 19:15:29,301 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:15:29,301 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:15:29,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:15:29,329 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:15:29,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:15:29,331 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:15:29,332 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:15:29,333 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:15:29,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:15:29,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:15:29,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:15:29,338 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:15:29,338 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:15:29,339 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:15:29,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:15:29,340 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:15:29,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:15:29,345 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 19:15:29,345 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 19:15:29,346 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 19:15:29,346 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:15:29,346 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 19:15:29,347 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:15:29,347 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 19:15:29,347 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:15:29,348 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:15:29,348 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:15:29,350 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:15:29,350 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:15:29,351 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:15:29,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:15:29,351 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:15:29,352 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:15:29,352 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:15:29,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:15:29,353 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:15:29,353 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:15:29,354 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:15:29,354 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:15:29,355 INFO L153 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_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2024-11-08 19:15:29,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:15:29,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:15:29,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:15:29,780 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:15:29,781 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:15:29,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i Unable to find full path for "g++" [2024-11-08 19:15:32,219 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:15:32,600 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:15:32,601 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2024-11-08 19:15:32,623 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/data/7eb3c5bdd/00f606ba0c5942a4a072cc6c6023cb26/FLAG2de491bf3 [2024-11-08 19:15:32,835 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/data/7eb3c5bdd/00f606ba0c5942a4a072cc6c6023cb26 [2024-11-08 19:15:32,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:15:32,847 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:15:32,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:15:32,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:15:32,869 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:15:32,871 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:15:32" (1/1) ... [2024-11-08 19:15:32,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b23f6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:32, skipping insertion in model container [2024-11-08 19:15:32,877 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:15:32" (1/1) ... [2024-11-08 19:15:32,941 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:15:33,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:15:33,538 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:15:33,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:15:33,689 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:15:33,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:33 WrapperNode [2024-11-08 19:15:33,690 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:15:33,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:15:33,692 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:15:33,693 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:15:33,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:33" (1/1) ... [2024-11-08 19:15:33,725 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:33" (1/1) ... [2024-11-08 19:15:33,756 INFO L138 Inliner]: procedures = 166, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2024-11-08 19:15:33,756 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:15:33,759 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:15:33,760 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:15:33,760 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:15:33,775 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:33" (1/1) ... [2024-11-08 19:15:33,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:33" (1/1) ... [2024-11-08 19:15:33,777 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:33" (1/1) ... [2024-11-08 19:15:33,802 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 19:15:33,803 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:33" (1/1) ... [2024-11-08 19:15:33,803 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:33" (1/1) ... [2024-11-08 19:15:33,809 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:33" (1/1) ... [2024-11-08 19:15:33,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:33" (1/1) ... [2024-11-08 19:15:33,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:33" (1/1) ... [2024-11-08 19:15:33,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:33" (1/1) ... [2024-11-08 19:15:33,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:15:33,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:15:33,835 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:15:33,835 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:15:33,836 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:33" (1/1) ... [2024-11-08 19:15:33,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:15:33,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:15:33,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:15:33,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:15:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-08 19:15:33,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-08 19:15:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:15:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:15:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:15:33,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:15:33,936 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 19:15:34,096 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:15:34,099 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:15:34,324 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 19:15:34,325 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:15:34,450 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:15:34,451 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 19:15:34,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:15:34 BoogieIcfgContainer [2024-11-08 19:15:34,452 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:15:34,481 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:15:34,482 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:15:34,491 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:15:34,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:15:32" (1/3) ... [2024-11-08 19:15:34,493 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ad143c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:15:34, skipping insertion in model container [2024-11-08 19:15:34,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:33" (2/3) ... [2024-11-08 19:15:34,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ad143c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:15:34, skipping insertion in model container [2024-11-08 19:15:34,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:15:34" (3/3) ... [2024-11-08 19:15:34,502 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2024-11-08 19:15:34,520 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:15:34,521 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 19:15:34,521 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 19:15:34,625 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 19:15:34,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 34 transitions, 72 flow [2024-11-08 19:15:34,711 INFO L124 PetriNetUnfolderBase]: 9/38 cut-off events. [2024-11-08 19:15:34,711 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:15:34,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 9/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 79 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-08 19:15:34,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 34 transitions, 72 flow [2024-11-08 19:15:34,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 34 transitions, 72 flow [2024-11-08 19:15:34,743 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:15:34,752 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@205aa844, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:15:34,752 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 19:15:34,757 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:15:34,757 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 19:15:34,758 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:15:34,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:34,759 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 19:15:34,760 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 19:15:34,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:34,767 INFO L85 PathProgramCache]: Analyzing trace with hash 212377, now seen corresponding path program 1 times [2024-11-08 19:15:34,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:15:34,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546931455] [2024-11-08 19:15:34,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:34,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:15:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:15:34,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:15:34,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546931455] [2024-11-08 19:15:34,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546931455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:15:34,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:15:34,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:15:34,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939032272] [2024-11-08 19:15:34,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:15:34,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 19:15:34,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:15:35,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 19:15:35,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 19:15:35,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 34 [2024-11-08 19:15:35,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 34 transitions, 72 flow. Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:35,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:15:35,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 34 [2024-11-08 19:15:35,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:15:35,139 INFO L124 PetriNetUnfolderBase]: 29/83 cut-off events. [2024-11-08 19:15:35,140 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:15:35,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 83 events. 29/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 259 event pairs, 8 based on Foata normal form. 6/74 useless extension candidates. Maximal degree in co-relation 110. Up to 35 conditions per place. [2024-11-08 19:15:35,146 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 11 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2024-11-08 19:15:35,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 82 flow [2024-11-08 19:15:35,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 19:15:35,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 19:15:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 50 transitions. [2024-11-08 19:15:35,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2024-11-08 19:15:35,167 INFO L175 Difference]: Start difference. First operand has 28 places, 34 transitions, 72 flow. Second operand 2 states and 50 transitions. [2024-11-08 19:15:35,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 82 flow [2024-11-08 19:15:35,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 82 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 19:15:35,175 INFO L231 Difference]: Finished difference. Result has 25 places, 28 transitions, 60 flow [2024-11-08 19:15:35,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=25, PETRI_TRANSITIONS=28} [2024-11-08 19:15:35,186 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2024-11-08 19:15:35,187 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 28 transitions, 60 flow [2024-11-08 19:15:35,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:35,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:35,188 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-08 19:15:35,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:15:35,188 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 19:15:35,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:35,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2032389326, now seen corresponding path program 1 times [2024-11-08 19:15:35,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:15:35,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464502220] [2024-11-08 19:15:35,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:35,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:15:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:15:35,225 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 19:15:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:15:35,265 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 19:15:35,265 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 19:15:35,268 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-08 19:15:35,271 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-08 19:15:35,271 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-08 19:15:35,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-08 19:15:35,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 19:15:35,273 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 19:15:35,277 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 19:15:35,277 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 19:15:35,334 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 19:15:35,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 61 transitions, 132 flow [2024-11-08 19:15:35,355 INFO L124 PetriNetUnfolderBase]: 18/70 cut-off events. [2024-11-08 19:15:35,355 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 19:15:35,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 70 events. 18/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 197 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 57. Up to 3 conditions per place. [2024-11-08 19:15:35,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 61 transitions, 132 flow [2024-11-08 19:15:35,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 61 transitions, 132 flow [2024-11-08 19:15:35,363 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:15:35,368 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@205aa844, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:15:35,368 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-08 19:15:35,371 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:15:35,371 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 19:15:35,371 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:15:35,371 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:35,371 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 19:15:35,372 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 19:15:35,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:35,376 INFO L85 PathProgramCache]: Analyzing trace with hash 272950, now seen corresponding path program 1 times [2024-11-08 19:15:35,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:15:35,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707164032] [2024-11-08 19:15:35,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:35,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:15:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:15:35,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:15:35,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707164032] [2024-11-08 19:15:35,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707164032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:15:35,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:15:35,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:15:35,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625576813] [2024-11-08 19:15:35,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:15:35,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 19:15:35,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:15:35,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 19:15:35,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 19:15:35,448 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 61 [2024-11-08 19:15:35,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 61 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:35,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:15:35,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 61 [2024-11-08 19:15:35,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:15:35,663 INFO L124 PetriNetUnfolderBase]: 271/560 cut-off events. [2024-11-08 19:15:35,663 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-08 19:15:35,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 560 events. 271/560 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2881 event pairs, 108 based on Foata normal form. 58/530 useless extension candidates. Maximal degree in co-relation 178. Up to 300 conditions per place. [2024-11-08 19:15:35,676 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 19 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2024-11-08 19:15:35,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 152 flow [2024-11-08 19:15:35,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 19:15:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 19:15:35,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2024-11-08 19:15:35,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7540983606557377 [2024-11-08 19:15:35,679 INFO L175 Difference]: Start difference. First operand has 48 places, 61 transitions, 132 flow. Second operand 2 states and 92 transitions. [2024-11-08 19:15:35,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 152 flow [2024-11-08 19:15:35,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 19:15:35,685 INFO L231 Difference]: Finished difference. Result has 44 places, 52 transitions, 114 flow [2024-11-08 19:15:35,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=44, PETRI_TRANSITIONS=52} [2024-11-08 19:15:35,687 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2024-11-08 19:15:35,687 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 52 transitions, 114 flow [2024-11-08 19:15:35,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:35,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:35,688 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-08 19:15:35,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 19:15:35,689 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 19:15:35,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:35,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1477853449, now seen corresponding path program 1 times [2024-11-08 19:15:35,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:15:35,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535449776] [2024-11-08 19:15:35,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:35,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:15:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:15:35,732 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 19:15:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:15:35,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 19:15:35,764 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 19:15:35,764 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-08 19:15:35,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-08 19:15:35,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-08 19:15:35,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-08 19:15:35,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-08 19:15:35,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 19:15:35,766 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 19:15:35,767 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 19:15:35,767 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-08 19:15:35,948 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 19:15:35,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 88 transitions, 194 flow [2024-11-08 19:15:35,981 INFO L124 PetriNetUnfolderBase]: 27/102 cut-off events. [2024-11-08 19:15:35,984 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-08 19:15:35,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 27/102 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 326 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2024-11-08 19:15:35,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 88 transitions, 194 flow [2024-11-08 19:15:35,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 88 transitions, 194 flow [2024-11-08 19:15:35,994 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:15:35,995 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@205aa844, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:15:35,996 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-08 19:15:36,002 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:15:36,002 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 19:15:36,002 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:15:36,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:36,003 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 19:15:36,003 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-08 19:15:36,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:36,004 INFO L85 PathProgramCache]: Analyzing trace with hash 360334, now seen corresponding path program 1 times [2024-11-08 19:15:36,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:15:36,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119940397] [2024-11-08 19:15:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:36,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:15:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:15:36,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:15:36,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119940397] [2024-11-08 19:15:36,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119940397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:15:36,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:15:36,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:15:36,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022843397] [2024-11-08 19:15:36,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:15:36,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 19:15:36,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:15:36,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 19:15:36,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 19:15:36,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 88 [2024-11-08 19:15:36,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 88 transitions, 194 flow. Second operand has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:36,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:15:36,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 88 [2024-11-08 19:15:36,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:15:36,659 INFO L124 PetriNetUnfolderBase]: 2054/3662 cut-off events. [2024-11-08 19:15:36,659 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2024-11-08 19:15:36,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5933 conditions, 3662 events. 2054/3662 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 24056 event pairs, 908 based on Foata normal form. 449/3598 useless extension candidates. Maximal degree in co-relation 914. Up to 2150 conditions per place. [2024-11-08 19:15:36,718 INFO L140 encePairwiseOnDemand]: 81/88 looper letters, 27 selfloop transitions, 0 changer transitions 0/76 dead transitions. [2024-11-08 19:15:36,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 224 flow [2024-11-08 19:15:36,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 19:15:36,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 19:15:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 134 transitions. [2024-11-08 19:15:36,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2024-11-08 19:15:36,723 INFO L175 Difference]: Start difference. First operand has 68 places, 88 transitions, 194 flow. Second operand 2 states and 134 transitions. [2024-11-08 19:15:36,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 224 flow [2024-11-08 19:15:36,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 222 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-08 19:15:36,730 INFO L231 Difference]: Finished difference. Result has 63 places, 76 transitions, 168 flow [2024-11-08 19:15:36,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=168, PETRI_PLACES=63, PETRI_TRANSITIONS=76} [2024-11-08 19:15:36,732 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2024-11-08 19:15:36,733 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 76 transitions, 168 flow [2024-11-08 19:15:36,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:36,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:36,734 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:15:36,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 19:15:36,735 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-08 19:15:36,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:36,735 INFO L85 PathProgramCache]: Analyzing trace with hash -558389579, now seen corresponding path program 1 times [2024-11-08 19:15:36,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:15:36,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053752093] [2024-11-08 19:15:36,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:36,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:15:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:15:36,818 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 19:15:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:15:36,865 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 19:15:36,866 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 19:15:36,866 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-11-08 19:15:36,866 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-08 19:15:36,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-08 19:15:36,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-08 19:15:36,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-08 19:15:36,875 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-08 19:15:36,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 19:15:36,875 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 19:15:36,918 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2024-11-08 19:15:36,918 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 19:15:36,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 07:15:36 BasicIcfg [2024-11-08 19:15:36,938 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 19:15:36,939 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 19:15:36,939 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 19:15:36,939 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 19:15:36,940 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:15:34" (3/4) ... [2024-11-08 19:15:36,945 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 19:15:36,947 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 19:15:36,948 INFO L158 Benchmark]: Toolchain (without parser) took 4100.91ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 106.9MB in the beginning and 74.2MB in the end (delta: 32.7MB). Peak memory consumption was 67.0MB. Max. memory is 16.1GB. [2024-11-08 19:15:36,948 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 151.0MB. Free memory was 97.1MB in the beginning and 96.9MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 19:15:36,949 INFO L158 Benchmark]: CACSL2BoogieTranslator took 836.82ms. Allocated memory is still 151.0MB. Free memory was 106.9MB in the beginning and 84.7MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-08 19:15:36,953 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.23ms. Allocated memory is still 151.0MB. Free memory was 84.7MB in the beginning and 82.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 19:15:36,954 INFO L158 Benchmark]: Boogie Preprocessor took 71.05ms. Allocated memory is still 151.0MB. Free memory was 82.5MB in the beginning and 80.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 19:15:36,955 INFO L158 Benchmark]: RCFGBuilder took 621.07ms. Allocated memory is still 151.0MB. Free memory was 80.6MB in the beginning and 62.9MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-08 19:15:36,955 INFO L158 Benchmark]: TraceAbstraction took 2456.81ms. Allocated memory is still 182.5MB. Free memory was 150.5MB in the beginning and 75.3MB in the end (delta: 75.2MB). Peak memory consumption was 73.3MB. Max. memory is 16.1GB. [2024-11-08 19:15:36,956 INFO L158 Benchmark]: Witness Printer took 8.08ms. Allocated memory is still 182.5MB. Free memory was 75.3MB in the beginning and 74.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 19:15:36,962 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 151.0MB. Free memory was 97.1MB in the beginning and 96.9MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 836.82ms. Allocated memory is still 151.0MB. Free memory was 106.9MB in the beginning and 84.7MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.23ms. Allocated memory is still 151.0MB. Free memory was 84.7MB in the beginning and 82.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.05ms. Allocated memory is still 151.0MB. Free memory was 82.5MB in the beginning and 80.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 621.07ms. Allocated memory is still 151.0MB. Free memory was 80.6MB in the beginning and 62.9MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2456.81ms. Allocated memory is still 182.5MB. Free memory was 150.5MB in the beginning and 75.3MB in the end (delta: 75.2MB). Peak memory consumption was 73.3MB. Max. memory is 16.1GB. * Witness Printer took 8.08ms. Allocated memory is still 182.5MB. Free memory was 75.3MB in the beginning and 74.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L700] 0 pthread_t t; [L701] COND TRUE 0 1 [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [t=-1] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND TRUE 1 i main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2024-11-08 19:15:40,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:15:40,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:15:40,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:15:40,682 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:15:40,683 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:15:40,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i Unable to find full path for "g++" [2024-11-08 19:15:43,007 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:15:43,337 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:15:43,338 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2024-11-08 19:15:43,352 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/data/e8d776c25/2e2d56659d8d4d25904f507123d4c8ab/FLAG228e35c2f [2024-11-08 19:15:43,570 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/data/e8d776c25/2e2d56659d8d4d25904f507123d4c8ab [2024-11-08 19:15:43,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:15:43,575 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:15:43,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:15:43,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:15:43,584 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:15:43,585 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:15:43" (1/1) ... [2024-11-08 19:15:43,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b337eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:43, skipping insertion in model container [2024-11-08 19:15:43,586 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:15:43" (1/1) ... [2024-11-08 19:15:43,640 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:15:44,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:15:44,236 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:15:44,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:15:44,396 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:15:44,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:44 WrapperNode [2024-11-08 19:15:44,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:15:44,399 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:15:44,399 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:15:44,399 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:15:44,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:44" (1/1) ... [2024-11-08 19:15:44,459 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:44" (1/1) ... [2024-11-08 19:15:44,489 INFO L138 Inliner]: procedures = 167, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2024-11-08 19:15:44,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:15:44,492 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:15:44,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:15:44,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:15:44,508 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:44" (1/1) ... [2024-11-08 19:15:44,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:44" (1/1) ... [2024-11-08 19:15:44,516 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:44" (1/1) ... [2024-11-08 19:15:44,540 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 19:15:44,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:44" (1/1) ... [2024-11-08 19:15:44,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:44" (1/1) ... [2024-11-08 19:15:44,550 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:44" (1/1) ... [2024-11-08 19:15:44,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:44" (1/1) ... [2024-11-08 19:15:44,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:44" (1/1) ... [2024-11-08 19:15:44,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:44" (1/1) ... [2024-11-08 19:15:44,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:15:44,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:15:44,574 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:15:44,574 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:15:44,575 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:44" (1/1) ... [2024-11-08 19:15:44,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:15:44,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:15:44,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:15:44,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:15:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-08 19:15:44,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-08 19:15:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:15:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 19:15:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:15:44,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:15:44,664 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 19:15:44,848 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:15:44,851 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:15:45,062 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 19:15:45,063 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:15:45,215 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:15:45,216 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 19:15:45,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:15:45 BoogieIcfgContainer [2024-11-08 19:15:45,216 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:15:45,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:15:45,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:15:45,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:15:45,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:15:43" (1/3) ... [2024-11-08 19:15:45,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605595a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:15:45, skipping insertion in model container [2024-11-08 19:15:45,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:15:44" (2/3) ... [2024-11-08 19:15:45,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605595a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:15:45, skipping insertion in model container [2024-11-08 19:15:45,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:15:45" (3/3) ... [2024-11-08 19:15:45,229 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2024-11-08 19:15:45,248 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:15:45,248 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 19:15:45,249 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 19:15:45,309 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 19:15:45,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 34 transitions, 72 flow [2024-11-08 19:15:45,382 INFO L124 PetriNetUnfolderBase]: 9/38 cut-off events. [2024-11-08 19:15:45,383 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:15:45,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 9/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 79 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-08 19:15:45,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 34 transitions, 72 flow [2024-11-08 19:15:45,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 34 transitions, 72 flow [2024-11-08 19:15:45,413 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:15:45,422 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@16234cc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:15:45,423 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 19:15:45,430 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:15:45,433 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 19:15:45,433 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:15:45,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:45,434 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 19:15:45,435 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 19:15:45,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:45,446 INFO L85 PathProgramCache]: Analyzing trace with hash 214363, now seen corresponding path program 1 times [2024-11-08 19:15:45,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:15:45,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536418735] [2024-11-08 19:15:45,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:45,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:45,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:15:45,462 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:15:45,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:15:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:45,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-08 19:15:45,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:15:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:15:45,605 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:15:45,606 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:15:45,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536418735] [2024-11-08 19:15:45,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536418735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:15:45,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:15:45,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:15:45,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124230241] [2024-11-08 19:15:45,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:15:45,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 19:15:45,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:15:45,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 19:15:45,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 19:15:45,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 34 [2024-11-08 19:15:45,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 34 transitions, 72 flow. Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:45,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:15:45,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 34 [2024-11-08 19:15:45,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:15:45,717 INFO L124 PetriNetUnfolderBase]: 29/83 cut-off events. [2024-11-08 19:15:45,718 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:15:45,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 83 events. 29/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 259 event pairs, 8 based on Foata normal form. 6/74 useless extension candidates. Maximal degree in co-relation 110. Up to 35 conditions per place. [2024-11-08 19:15:45,721 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 11 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2024-11-08 19:15:45,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 82 flow [2024-11-08 19:15:45,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 19:15:45,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 19:15:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 50 transitions. [2024-11-08 19:15:45,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2024-11-08 19:15:45,739 INFO L175 Difference]: Start difference. First operand has 28 places, 34 transitions, 72 flow. Second operand 2 states and 50 transitions. [2024-11-08 19:15:45,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 82 flow [2024-11-08 19:15:45,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 82 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 19:15:45,747 INFO L231 Difference]: Finished difference. Result has 25 places, 28 transitions, 60 flow [2024-11-08 19:15:45,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=25, PETRI_TRANSITIONS=28} [2024-11-08 19:15:45,756 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2024-11-08 19:15:45,757 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 28 transitions, 60 flow [2024-11-08 19:15:45,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:45,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:45,758 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-08 19:15:45,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 19:15:45,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:45,960 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 19:15:45,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:45,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2091556238, now seen corresponding path program 1 times [2024-11-08 19:15:45,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:15:45,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437794525] [2024-11-08 19:15:45,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:45,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:45,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:15:45,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:15:45,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 19:15:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:15:46,064 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 19:15:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:15:46,118 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-08 19:15:46,118 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 19:15:46,120 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-08 19:15:46,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-08 19:15:46,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-08 19:15:46,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-08 19:15:46,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 19:15:46,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:46,326 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 19:15:46,329 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 19:15:46,330 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 19:15:46,381 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 19:15:46,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 61 transitions, 132 flow [2024-11-08 19:15:46,401 INFO L124 PetriNetUnfolderBase]: 18/70 cut-off events. [2024-11-08 19:15:46,401 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 19:15:46,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 70 events. 18/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 197 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 57. Up to 3 conditions per place. [2024-11-08 19:15:46,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 61 transitions, 132 flow [2024-11-08 19:15:46,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 61 transitions, 132 flow [2024-11-08 19:15:46,408 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:15:46,409 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@16234cc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:15:46,410 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-08 19:15:46,412 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:15:46,412 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 19:15:46,413 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:15:46,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:46,413 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 19:15:46,413 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 19:15:46,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:46,414 INFO L85 PathProgramCache]: Analyzing trace with hash 274936, now seen corresponding path program 1 times [2024-11-08 19:15:46,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:15:46,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521593333] [2024-11-08 19:15:46,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:46,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:46,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:15:46,418 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:15:46,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 19:15:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:46,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-08 19:15:46,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:15:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:15:46,519 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:15:46,520 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:15:46,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521593333] [2024-11-08 19:15:46,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521593333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:15:46,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:15:46,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:15:46,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449888520] [2024-11-08 19:15:46,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:15:46,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 19:15:46,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:15:46,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 19:15:46,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 19:15:46,527 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 61 [2024-11-08 19:15:46,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 61 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:46,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:15:46,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 61 [2024-11-08 19:15:46,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:15:46,721 INFO L124 PetriNetUnfolderBase]: 271/560 cut-off events. [2024-11-08 19:15:46,722 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-08 19:15:46,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 560 events. 271/560 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2881 event pairs, 108 based on Foata normal form. 58/530 useless extension candidates. Maximal degree in co-relation 178. Up to 300 conditions per place. [2024-11-08 19:15:46,730 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 19 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2024-11-08 19:15:46,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 152 flow [2024-11-08 19:15:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 19:15:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 19:15:46,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2024-11-08 19:15:46,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7540983606557377 [2024-11-08 19:15:46,733 INFO L175 Difference]: Start difference. First operand has 48 places, 61 transitions, 132 flow. Second operand 2 states and 92 transitions. [2024-11-08 19:15:46,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 152 flow [2024-11-08 19:15:46,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 19:15:46,736 INFO L231 Difference]: Finished difference. Result has 44 places, 52 transitions, 114 flow [2024-11-08 19:15:46,736 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=44, PETRI_TRANSITIONS=52} [2024-11-08 19:15:46,737 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2024-11-08 19:15:46,737 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 52 transitions, 114 flow [2024-11-08 19:15:46,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:46,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:46,738 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-08 19:15:46,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 19:15:46,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:46,942 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 19:15:46,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:46,943 INFO L85 PathProgramCache]: Analyzing trace with hash 227032569, now seen corresponding path program 1 times [2024-11-08 19:15:46,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:15:46,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162540747] [2024-11-08 19:15:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:46,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:46,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:15:46,952 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:15:46,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 19:15:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:15:47,040 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 19:15:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:15:47,086 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-08 19:15:47,087 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 19:15:47,088 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-08 19:15:47,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-08 19:15:47,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-08 19:15:47,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-08 19:15:47,089 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-08 19:15:47,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 19:15:47,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:47,291 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 19:15:47,292 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 19:15:47,292 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-08 19:15:47,340 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 19:15:47,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 88 transitions, 194 flow [2024-11-08 19:15:47,359 INFO L124 PetriNetUnfolderBase]: 27/102 cut-off events. [2024-11-08 19:15:47,359 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-08 19:15:47,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 27/102 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 326 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2024-11-08 19:15:47,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 88 transitions, 194 flow [2024-11-08 19:15:47,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 88 transitions, 194 flow [2024-11-08 19:15:47,364 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:15:47,365 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@16234cc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:15:47,365 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-08 19:15:47,367 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:15:47,367 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 19:15:47,368 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:15:47,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:47,368 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 19:15:47,368 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-08 19:15:47,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:47,369 INFO L85 PathProgramCache]: Analyzing trace with hash 362320, now seen corresponding path program 1 times [2024-11-08 19:15:47,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:15:47,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111344461] [2024-11-08 19:15:47,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:47,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:47,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:15:47,372 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:15:47,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 19:15:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:47,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-08 19:15:47,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:15:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:15:47,460 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:15:47,460 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:15:47,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111344461] [2024-11-08 19:15:47,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111344461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:15:47,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:15:47,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:15:47,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575924692] [2024-11-08 19:15:47,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:15:47,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 19:15:47,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:15:47,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 19:15:47,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 19:15:47,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 88 [2024-11-08 19:15:47,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 88 transitions, 194 flow. Second operand has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:47,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:15:47,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 88 [2024-11-08 19:15:47,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:15:48,085 INFO L124 PetriNetUnfolderBase]: 2054/3662 cut-off events. [2024-11-08 19:15:48,085 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2024-11-08 19:15:48,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5933 conditions, 3662 events. 2054/3662 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 24056 event pairs, 908 based on Foata normal form. 449/3598 useless extension candidates. Maximal degree in co-relation 914. Up to 2150 conditions per place. [2024-11-08 19:15:48,126 INFO L140 encePairwiseOnDemand]: 81/88 looper letters, 27 selfloop transitions, 0 changer transitions 0/76 dead transitions. [2024-11-08 19:15:48,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 224 flow [2024-11-08 19:15:48,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 19:15:48,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 19:15:48,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 134 transitions. [2024-11-08 19:15:48,129 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2024-11-08 19:15:48,129 INFO L175 Difference]: Start difference. First operand has 68 places, 88 transitions, 194 flow. Second operand 2 states and 134 transitions. [2024-11-08 19:15:48,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 224 flow [2024-11-08 19:15:48,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 222 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-08 19:15:48,133 INFO L231 Difference]: Finished difference. Result has 63 places, 76 transitions, 168 flow [2024-11-08 19:15:48,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=168, PETRI_PLACES=63, PETRI_TRANSITIONS=76} [2024-11-08 19:15:48,135 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2024-11-08 19:15:48,135 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 76 transitions, 168 flow [2024-11-08 19:15:48,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:48,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:48,136 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:15:48,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 19:15:48,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:48,341 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-08 19:15:48,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:48,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1146496439, now seen corresponding path program 1 times [2024-11-08 19:15:48,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:15:48,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720602842] [2024-11-08 19:15:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:48,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:48,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:15:48,353 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:15:48,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 19:15:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:15:48,446 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 19:15:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:15:48,478 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-08 19:15:48,482 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 19:15:48,482 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-11-08 19:15:48,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-08 19:15:48,483 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-08 19:15:48,483 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-08 19:15:48,483 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-08 19:15:48,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-08 19:15:48,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 19:15:48,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b97aa24-1af8-477f-95b8-e60a70c39a3d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:48,685 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 19:15:48,729 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2024-11-08 19:15:48,729 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 19:15:48,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 07:15:48 BasicIcfg [2024-11-08 19:15:48,747 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 19:15:48,748 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 19:15:48,748 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 19:15:48,748 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 19:15:48,749 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:15:45" (3/4) ... [2024-11-08 19:15:48,755 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 19:15:48,756 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 19:15:48,757 INFO L158 Benchmark]: Toolchain (without parser) took 5182.46ms. Allocated memory was 79.7MB in the beginning and 144.7MB in the end (delta: 65.0MB). Free memory was 54.7MB in the beginning and 83.7MB in the end (delta: -29.0MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2024-11-08 19:15:48,758 INFO L158 Benchmark]: CDTParser took 1.68ms. Allocated memory is still 79.7MB. Free memory is still 55.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 19:15:48,758 INFO L158 Benchmark]: CACSL2BoogieTranslator took 821.42ms. Allocated memory is still 79.7MB. Free memory was 54.5MB in the beginning and 53.6MB in the end (delta: 874.6kB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2024-11-08 19:15:48,759 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.34ms. Allocated memory is still 79.7MB. Free memory was 53.6MB in the beginning and 51.5MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 19:15:48,759 INFO L158 Benchmark]: Boogie Preprocessor took 80.67ms. Allocated memory is still 79.7MB. Free memory was 51.5MB in the beginning and 49.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 19:15:48,760 INFO L158 Benchmark]: RCFGBuilder took 643.42ms. Allocated memory was 79.7MB in the beginning and 119.5MB in the end (delta: 39.8MB). Free memory was 49.1MB in the beginning and 91.1MB in the end (delta: -42.0MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2024-11-08 19:15:48,760 INFO L158 Benchmark]: TraceAbstraction took 3528.16ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 90.1MB in the beginning and 83.7MB in the end (delta: 6.4MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2024-11-08 19:15:48,761 INFO L158 Benchmark]: Witness Printer took 8.51ms. Allocated memory is still 144.7MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 19:15:48,766 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.68ms. Allocated memory is still 79.7MB. Free memory is still 55.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 821.42ms. Allocated memory is still 79.7MB. Free memory was 54.5MB in the beginning and 53.6MB in the end (delta: 874.6kB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.34ms. Allocated memory is still 79.7MB. Free memory was 53.6MB in the beginning and 51.5MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.67ms. Allocated memory is still 79.7MB. Free memory was 51.5MB in the beginning and 49.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 643.42ms. Allocated memory was 79.7MB in the beginning and 119.5MB in the end (delta: 39.8MB). Free memory was 49.1MB in the beginning and 91.1MB in the end (delta: -42.0MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3528.16ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 90.1MB in the beginning and 83.7MB in the end (delta: 6.4MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. * Witness Printer took 8.51ms. Allocated memory is still 144.7MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L700] 0 pthread_t t; [L701] COND TRUE 0 1 [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [t=0] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND TRUE 1 i