./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_6d3bc228-a537-45b5-a30e-bfc6cc2bf6ab/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3bc228-a537-45b5-a30e-bfc6cc2bf6ab/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_6d3bc228-a537-45b5-a30e-bfc6cc2bf6ab/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3bc228-a537-45b5-a30e-bfc6cc2bf6ab/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3bc228-a537-45b5-a30e-bfc6cc2bf6ab/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_6d3bc228-a537-45b5-a30e-bfc6cc2bf6ab/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 0cfb19cf4d2e91498cc6b9015bdada7a33dfe09887340d8a9d79513b784b8b5a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:48:07,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:48:07,284 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3bc228-a537-45b5-a30e-bfc6cc2bf6ab/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:48:07,292 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:48:07,293 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:48:07,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:48:07,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:48:07,325 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:48:07,326 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:48:07,327 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:48:07,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:48:07,328 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:48:07,330 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:48:07,330 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:48:07,331 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:48:07,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:48:07,333 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:48:07,334 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:48:07,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:48:07,336 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:48:07,337 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:48:07,338 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:48:07,338 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:48:07,339 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:48:07,340 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:48:07,341 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:48:07,342 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:48:07,342 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:48:07,343 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:48:07,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:48:07,345 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:48:07,346 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:48:07,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:48:07,347 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:48:07,348 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:48:07,349 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:48:07,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:48:07,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:48:07,352 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:48:07,352 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:48:07,353 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:48:07,354 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_6d3bc228-a537-45b5-a30e-bfc6cc2bf6ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3bc228-a537-45b5-a30e-bfc6cc2bf6ab/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cfb19cf4d2e91498cc6b9015bdada7a33dfe09887340d8a9d79513b784b8b5a [2023-11-24 21:48:07,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:48:07,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:48:07,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:48:07,711 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:48:07,712 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:48:07,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3bc228-a537-45b5-a30e-bfc6cc2bf6ab/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2023-11-24 21:48:11,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:48:11,527 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:48:11,528 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3bc228-a537-45b5-a30e-bfc6cc2bf6ab/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2023-11-24 21:48:11,538 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3bc228-a537-45b5-a30e-bfc6cc2bf6ab/bin/uautomizer-verify-NlZe1sFDwI/data/f4ec330d8/d085b6168d7b42e99df2841729142c75/FLAGb69c0b327 [2023-11-24 21:48:11,554 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3bc228-a537-45b5-a30e-bfc6cc2bf6ab/bin/uautomizer-verify-NlZe1sFDwI/data/f4ec330d8/d085b6168d7b42e99df2841729142c75 [2023-11-24 21:48:11,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:48:11,560 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:48:11,562 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:48:11,562 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:48:11,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:48:11,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:48:11" (1/1) ... [2023-11-24 21:48:11,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cabfa0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:11, skipping insertion in model container [2023-11-24 21:48:11,571 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:48:11" (1/1) ... [2023-11-24 21:48:11,612 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:48:11,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:48:11,893 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:48:11,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:48:11,947 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:48:11,947 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:48:11,957 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:48:11,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:11 WrapperNode [2023-11-24 21:48:11,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:48:11,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:48:11,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:48:11,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:48:11,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:11" (1/1) ... [2023-11-24 21:48:11,984 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:11" (1/1) ... [2023-11-24 21:48:12,024 INFO L138 Inliner]: procedures = 25, calls = 101, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 295 [2023-11-24 21:48:12,025 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:48:12,026 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:48:12,026 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:48:12,026 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:48:12,040 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:11" (1/1) ... [2023-11-24 21:48:12,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:11" (1/1) ... [2023-11-24 21:48:12,048 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:11" (1/1) ... [2023-11-24 21:48:12,073 INFO L175 MemorySlicer]: Split 14 memory accesses to 7 slices as follows [2, 2, 2, 2, 2, 2, 2]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 1, 1, 1]. [2023-11-24 21:48:12,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:11" (1/1) ... [2023-11-24 21:48:12,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:11" (1/1) ... [2023-11-24 21:48:12,089 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:11" (1/1) ... [2023-11-24 21:48:12,092 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:11" (1/1) ... [2023-11-24 21:48:12,096 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:11" (1/1) ... [2023-11-24 21:48:12,111 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:11" (1/1) ... [2023-11-24 21:48:12,117 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:48:12,118 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:48:12,119 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:48:12,119 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:48:12,121 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:11" (1/1) ... [2023-11-24 21:48:12,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:48:12,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3bc228-a537-45b5-a30e-bfc6cc2bf6ab/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:48:12,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3bc228-a537-45b5-a30e-bfc6cc2bf6ab/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:48:12,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d3bc228-a537-45b5-a30e-bfc6cc2bf6ab/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:48:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:48:12,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:48:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:48:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:48:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:48:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:48:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 21:48:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-24 21:48:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-24 21:48:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:48:12,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:48:12,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:48:12,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 21:48:12,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-24 21:48:12,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-24 21:48:12,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-24 21:48:12,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 21:48:12,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 21:48:12,246 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 21:48:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 21:48:12,247 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 21:48:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 21:48:12,248 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-24 21:48:12,248 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-24 21:48:12,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:48:12,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:48:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:48:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:48:12,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 21:48:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-24 21:48:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-24 21:48:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-24 21:48:12,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-24 21:48:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-24 21:48:12,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-24 21:48:12,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:48:12,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:48:12,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:48:12,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:48:12,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:48:12,257 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 21:48:12,451 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:48:12,453 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:48:12,976 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:48:13,538 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:48:13,539 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:48:13,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:48:13 BoogieIcfgContainer [2023-11-24 21:48:13,540 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:48:13,548 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:48:13,548 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:48:13,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:48:13,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:48:11" (1/3) ... [2023-11-24 21:48:13,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a9cf24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:48:13, skipping insertion in model container [2023-11-24 21:48:13,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:48:11" (2/3) ... [2023-11-24 21:48:13,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a9cf24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:48:13, skipping insertion in model container [2023-11-24 21:48:13,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:48:13" (3/3) ... [2023-11-24 21:48:13,557 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2023-11-24 21:48:13,582 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:48:13,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-24 21:48:13,583 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:48:13,703 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-11-24 21:48:13,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 108 transitions, 258 flow [2023-11-24 21:48:13,867 INFO L124 PetriNetUnfolderBase]: 0/102 cut-off events. [2023-11-24 21:48:13,867 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-24 21:48:13,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 102 events. 0/102 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 210 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-24 21:48:13,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 108 transitions, 258 flow [2023-11-24 21:48:13,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 101 transitions, 238 flow [2023-11-24 21:48:13,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:48:13,906 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;@12c3dbd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:48:13,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-11-24 21:48:13,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:48:13,916 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:48:13,917 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:48:13,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:48:13,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:48:13,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:48:13,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:48:13,924 INFO L85 PathProgramCache]: Analyzing trace with hash 18790, now seen corresponding path program 1 times [2023-11-24 21:48:13,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:48:13,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264882954] [2023-11-24 21:48:13,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:48:13,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:48:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:48:14,849 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 21:48:14,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:48:14,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264882954] [2023-11-24 21:48:14,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264882954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:48:14,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:48:14,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:48:14,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133614291] [2023-11-24 21:48:14,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:48:14,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:48:14,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:48:14,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:48:14,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:48:15,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 108 [2023-11-24 21:48:15,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 101 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 21:48:15,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:48:15,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 108 [2023-11-24 21:48:15,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:48:52,827 INFO L124 PetriNetUnfolderBase]: 253908/348129 cut-off events. [2023-11-24 21:48:52,827 INFO L125 PetriNetUnfolderBase]: For 13623/13623 co-relation queries the response was YES. [2023-11-24 21:48:53,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672357 conditions, 348129 events. 253908/348129 cut-off events. For 13623/13623 co-relation queries the response was YES. Maximal size of possible extension queue 9739. Compared 2655237 event pairs, 253908 based on Foata normal form. 1/332883 useless extension candidates. Maximal degree in co-relation 615311. Up to 312502 conditions per place. [2023-11-24 21:48:55,547 INFO L140 encePairwiseOnDemand]: 104/108 looper letters, 45 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-11-24 21:48:55,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 97 transitions, 322 flow [2023-11-24 21:48:55,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:48:55,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:48:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-11-24 21:48:55,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6882716049382716 [2023-11-24 21:48:55,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-11-24 21:48:55,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-11-24 21:48:55,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:48:55,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-11-24 21:48:55,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 21:48:55,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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 21:48:55,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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 21:48:55,595 INFO L175 Difference]: Start difference. First operand has 120 places, 101 transitions, 238 flow. Second operand 3 states and 223 transitions. [2023-11-24 21:48:55,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 97 transitions, 322 flow