./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9bf3c8-89b2-4645-b436-063e77a82f4f/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9bf3c8-89b2-4645-b436-063e77a82f4f/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9bf3c8-89b2-4645-b436-063e77a82f4f/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9bf3c8-89b2-4645-b436-063e77a82f4f/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9bf3c8-89b2-4645-b436-063e77a82f4f/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9bf3c8-89b2-4645-b436-063e77a82f4f/bin/uautomizer-verify-NlZe1sFDwI --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 e9184a10f76289bc351ce16b4243b6d0e46782fe8318237a8a819d2b43a92673 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:02:05,205 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:02:05,325 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9bf3c8-89b2-4645-b436-063e77a82f4f/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 22:02:05,336 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:02:05,337 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:02:05,383 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:02:05,384 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:02:05,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:02:05,385 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:02:05,390 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:02:05,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:02:05,392 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:02:05,393 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:02:05,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:02:05,396 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:02:05,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:02:05,397 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:02:05,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:02:05,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:02:05,399 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:02:05,400 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:02:05,401 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:02:05,401 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:02:05,401 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:02:05,402 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:02:05,402 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:02:05,403 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:02:05,403 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:02:05,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:02:05,405 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:02:05,406 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:02:05,407 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:02:05,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:02:05,407 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:02:05,408 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:02:05,408 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:02:05,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:02:05,408 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:02:05,409 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:02:05,409 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:02:05,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:02:05,410 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_0f9bf3c8-89b2-4645-b436-063e77a82f4f/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9bf3c8-89b2-4645-b436-063e77a82f4f/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9184a10f76289bc351ce16b4243b6d0e46782fe8318237a8a819d2b43a92673 [2023-11-24 22:02:05,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:02:05,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:02:05,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:02:05,755 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:02:05,756 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:02:05,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9bf3c8-89b2-4645-b436-063e77a82f4f/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c [2023-11-24 22:02:09,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:02:09,303 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:02:09,304 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9bf3c8-89b2-4645-b436-063e77a82f4f/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c [2023-11-24 22:02:09,315 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9bf3c8-89b2-4645-b436-063e77a82f4f/bin/uautomizer-verify-NlZe1sFDwI/data/a30133c46/2a985e2eeb7541038bf05c6e45119d49/FLAGb2448457f [2023-11-24 22:02:09,334 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9bf3c8-89b2-4645-b436-063e77a82f4f/bin/uautomizer-verify-NlZe1sFDwI/data/a30133c46/2a985e2eeb7541038bf05c6e45119d49 [2023-11-24 22:02:09,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:02:09,343 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:02:09,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:02:09,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:02:09,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:02:09,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:02:09" (1/1) ... [2023-11-24 22:02:09,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625cc9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:09, skipping insertion in model container [2023-11-24 22:02:09,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:02:09" (1/1) ... [2023-11-24 22:02:09,405 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:02:09,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:02:09,750 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:02:09,791 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:02:09,800 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:02:09,801 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:02:09,809 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:02:09,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:09 WrapperNode [2023-11-24 22:02:09,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:02:09,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:02:09,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:02:09,812 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:02:09,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:09" (1/1) ... [2023-11-24 22:02:09,837 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:09" (1/1) ... [2023-11-24 22:02:09,892 INFO L138 Inliner]: procedures = 27, calls = 131, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 379 [2023-11-24 22:02:09,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:02:09,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:02:09,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:02:09,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:02:09,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:09" (1/1) ... [2023-11-24 22:02:09,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:09" (1/1) ... [2023-11-24 22:02:09,917 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:09" (1/1) ... [2023-11-24 22:02:09,951 INFO L175 MemorySlicer]: Split 18 memory accesses to 9 slices as follows [2, 2, 2, 2, 2, 2, 2, 2, 2]. 11 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 1, 1, 1, 1, 1]. [2023-11-24 22:02:09,951 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:09" (1/1) ... [2023-11-24 22:02:09,952 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:09" (1/1) ... [2023-11-24 22:02:09,967 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:09" (1/1) ... [2023-11-24 22:02:09,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:09" (1/1) ... [2023-11-24 22:02:09,973 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:09" (1/1) ... [2023-11-24 22:02:09,976 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:09" (1/1) ... [2023-11-24 22:02:09,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:02:09,995 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:02:09,996 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:02:09,996 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:02:09,997 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:09" (1/1) ... [2023-11-24 22:02:10,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:02:10,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9bf3c8-89b2-4645-b436-063e77a82f4f/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:02:10,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9bf3c8-89b2-4645-b436-063e77a82f4f/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:02:10,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9bf3c8-89b2-4645-b436-063e77a82f4f/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:02:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:02:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:02:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 22:02:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 22:02:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 22:02:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 22:02:10,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 22:02:10,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-24 22:02:10,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-24 22:02:10,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-24 22:02:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-24 22:02:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 22:02:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 22:02:10,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 22:02:10,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 22:02:10,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-24 22:02:10,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-24 22:02:10,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-24 22:02:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-24 22:02:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-24 22:02:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 22:02:10,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 22:02:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 22:02:10,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 22:02:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 22:02:10,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 22:02:10,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-24 22:02:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-24 22:02:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:02:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 22:02:10,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 22:02:10,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 22:02:10,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 22:02:10,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-24 22:02:10,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-24 22:02:10,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-24 22:02:10,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-24 22:02:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-24 22:02:10,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-24 22:02:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-24 22:02:10,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-24 22:02:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2023-11-24 22:02:10,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2023-11-24 22:02:10,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2023-11-24 22:02:10,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2023-11-24 22:02:10,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 22:02:10,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 22:02:10,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:02:10,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:02:10,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:02:10,101 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 22:02:10,353 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:02:10,355 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:02:11,047 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:02:11,462 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:02:11,462 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 22:02:11,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:02:11 BoogieIcfgContainer [2023-11-24 22:02:11,463 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:02:11,466 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:02:11,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:02:11,469 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:02:11,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:02:09" (1/3) ... [2023-11-24 22:02:11,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dde82b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:02:11, skipping insertion in model container [2023-11-24 22:02:11,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:02:09" (2/3) ... [2023-11-24 22:02:11,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dde82b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:02:11, skipping insertion in model container [2023-11-24 22:02:11,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:02:11" (3/3) ... [2023-11-24 22:02:11,473 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-8.wvr.c [2023-11-24 22:02:11,496 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:02:11,496 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-11-24 22:02:11,497 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:02:11,619 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-24 22:02:11,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 142 transitions, 340 flow [2023-11-24 22:02:11,747 INFO L124 PetriNetUnfolderBase]: 0/134 cut-off events. [2023-11-24 22:02:11,748 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-24 22:02:11,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 134 events. 0/134 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 276 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-24 22:02:11,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 142 transitions, 340 flow [2023-11-24 22:02:11,757 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 133 transitions, 314 flow [2023-11-24 22:02:11,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:02:11,776 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@79d4b6de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:02:11,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-11-24 22:02:11,782 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 22:02:11,782 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 22:02:11,782 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:02:11,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:11,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 22:02:11,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-24 22:02:11,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:11,790 INFO L85 PathProgramCache]: Analyzing trace with hash 23196, now seen corresponding path program 1 times [2023-11-24 22:02:11,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:11,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412411417] [2023-11-24 22:02:11,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:11,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:12,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:12,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412411417] [2023-11-24 22:02:12,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412411417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:12,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:12,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:02:12,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936893704] [2023-11-24 22:02:12,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:12,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:02:12,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:12,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:02:12,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:02:12,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 142 [2023-11-24 22:02:13,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 133 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2023-11-24 22:02:13,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:13,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 142 [2023-11-24 22:02:13,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand