./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a7b188-9a34-41df-a8ea-1711541c462b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a7b188-9a34-41df-a8ea-1711541c462b/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a7b188-9a34-41df-a8ea-1711541c462b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a7b188-9a34-41df-a8ea-1711541c462b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a7b188-9a34-41df-a8ea-1711541c462b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a7b188-9a34-41df-a8ea-1711541c462b/bin/uautomizer-verify-aQ6SnzHsRB --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 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:11:42,877 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:11:42,994 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a7b188-9a34-41df-a8ea-1711541c462b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:11:43,006 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:11:43,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:11:43,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:11:43,051 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:11:43,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:11:43,052 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:11:43,053 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:11:43,054 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:11:43,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:11:43,055 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:11:43,055 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:11:43,055 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:11:43,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:11:43,055 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:11:43,056 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:11:43,056 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:11:43,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:11:43,056 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:11:43,057 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:11:43,057 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:11:43,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:11:43,057 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:11:43,057 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:11:43,057 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:11:43,057 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:11:43,058 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:11:43,058 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:11:43,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:11:43,058 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:11:43,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:11:43,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:11:43,059 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:11:43,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:11:43,060 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:11:43,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:11:43,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:11:43,060 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:11:43,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:11:43,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:11:43,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:11:43,061 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:11:43,061 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:11:43,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:11:43,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:11:43,061 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_44a7b188-9a34-41df-a8ea-1711541c462b/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f [2024-11-28 03:11:43,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:11:43,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:11:43,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:11:43,436 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:11:43,437 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:11:43,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a7b188-9a34-41df-a8ea-1711541c462b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2024-11-28 03:11:46,771 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a7b188-9a34-41df-a8ea-1711541c462b/bin/uautomizer-verify-aQ6SnzHsRB/data/0ad57c7d4/7e4785cefa694133b979aa9380978343/FLAG62ffde90c [2024-11-28 03:11:47,262 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:11:47,263 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a7b188-9a34-41df-a8ea-1711541c462b/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2024-11-28 03:11:47,285 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a7b188-9a34-41df-a8ea-1711541c462b/bin/uautomizer-verify-aQ6SnzHsRB/data/0ad57c7d4/7e4785cefa694133b979aa9380978343/FLAG62ffde90c [2024-11-28 03:11:47,358 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a7b188-9a34-41df-a8ea-1711541c462b/bin/uautomizer-verify-aQ6SnzHsRB/data/0ad57c7d4/7e4785cefa694133b979aa9380978343 [2024-11-28 03:11:47,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:11:47,363 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:11:47,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:11:47,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:11:47,371 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:11:47,372 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:47" (1/1) ... [2024-11-28 03:11:47,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b33672a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:47, skipping insertion in model container [2024-11-28 03:11:47,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:47" (1/1) ... [2024-11-28 03:11:47,428 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:11:48,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:11:48,475 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:11:48,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:11:48,795 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:11:48,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:48 WrapperNode [2024-11-28 03:11:48,796 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:11:48,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:11:48,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:11:48,798 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:11:48,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:48" (1/1) ... [2024-11-28 03:11:48,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:48" (1/1) ... [2024-11-28 03:11:48,952 INFO L138 Inliner]: procedures = 491, calls = 159, calls flagged for inlining = 48, calls inlined = 122, statements flattened = 1879 [2024-11-28 03:11:48,953 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:11:48,953 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:11:48,954 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:11:48,954 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:11:48,964 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:48" (1/1) ... [2024-11-28 03:11:48,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:48" (1/1) ... [2024-11-28 03:11:48,980 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:48" (1/1) ... [2024-11-28 03:11:49,036 INFO L175 MemorySlicer]: Split 311 memory accesses to 9 slices as follows [2, 4, 8, 6, 2, 195, 12, 80, 2]. 63 percent of accesses are in the largest equivalence class. The 54 initializations are split as follows [2, 0, 2, 0, 0, 26, 4, 20, 0]. The 95 writes are split as follows [0, 2, 2, 4, 1, 61, 4, 20, 1]. [2024-11-28 03:11:49,036 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:48" (1/1) ... [2024-11-28 03:11:49,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:48" (1/1) ... [2024-11-28 03:11:49,109 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:48" (1/1) ... [2024-11-28 03:11:49,113 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:48" (1/1) ... [2024-11-28 03:11:49,123 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:48" (1/1) ... [2024-11-28 03:11:49,145 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:48" (1/1) ... [2024-11-28 03:11:49,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:48" (1/1) ... [2024-11-28 03:11:49,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:11:49,190 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:11:49,190 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:11:49,191 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:11:49,192 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:48" (1/1) ... [2024-11-28 03:11:49,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:11:49,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a7b188-9a34-41df-a8ea-1711541c462b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:49,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a7b188-9a34-41df-a8ea-1711541c462b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:11:49,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a7b188-9a34-41df-a8ea-1711541c462b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:11:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2024-11-28 03:11:49,276 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2024-11-28 03:11:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 03:11:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:11:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 03:11:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:11:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:11:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:11:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 03:11:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 03:11:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 03:11:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 03:11:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 03:11:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-28 03:11:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 03:11:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:11:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:11:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:11:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 03:11:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 03:11:49,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 03:11:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 03:11:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-28 03:11:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-28 03:11:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-28 03:11:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:11:49,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:11:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:11:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:11:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:11:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 03:11:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 03:11:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 03:11:49,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 03:11:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-28 03:11:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-28 03:11:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-28 03:11:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 03:11:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 03:11:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 03:11:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 03:11:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 03:11:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 03:11:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-28 03:11:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-28 03:11:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-28 03:11:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 03:11:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:11:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:11:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:11:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 03:11:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 03:11:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 03:11:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 03:11:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 03:11:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-28 03:11:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:11:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:11:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:11:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:11:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 03:11:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 03:11:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 03:11:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 03:11:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 03:11:49,286 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:11:49,789 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:11:49,792 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:11:53,879 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:11:53,879 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:11:56,686 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:11:56,686 INFO L312 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-28 03:11:56,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:56 BoogieIcfgContainer [2024-11-28 03:11:56,687 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:11:56,690 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:11:56,690 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:11:56,696 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:11:56,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:11:47" (1/3) ... [2024-11-28 03:11:56,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c026a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:56, skipping insertion in model container [2024-11-28 03:11:56,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:48" (2/3) ... [2024-11-28 03:11:56,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c026a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:56, skipping insertion in model container [2024-11-28 03:11:56,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:56" (3/3) ... [2024-11-28 03:11:56,700 INFO L128 eAbstractionObserver]: Analyzing ICFG workstealqueue_mutex-2.i [2024-11-28 03:11:56,720 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:11:56,722 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG workstealqueue_mutex-2.i that has 2 procedures, 857 locations, 1 initial locations, 11 loop locations, and 520 error locations. [2024-11-28 03:11:56,723 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:11:57,017 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 03:11:57,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 860 places, 935 transitions, 1877 flow [2024-11-28 03:11:57,791 INFO L124 PetriNetUnfolderBase]: 148/1759 cut-off events. [2024-11-28 03:11:57,795 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 03:11:57,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1764 conditions, 1759 events. 148/1759 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13250 event pairs, 0 based on Foata normal form. 0/628 useless extension candidates. Maximal degree in co-relation 904. Up to 6 conditions per place. [2024-11-28 03:11:57,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 860 places, 935 transitions, 1877 flow [2024-11-28 03:11:57,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 860 places, 935 transitions, 1877 flow [2024-11-28 03:11:57,896 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:11:57,913 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;@3e7f4546, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:11:57,913 INFO L334 AbstractCegarLoop]: Starting to check reachability of 565 error locations. [2024-11-28 03:11:57,918 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:11:57,918 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-28 03:11:57,918 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:11:57,918 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:11:57,920 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-28 03:11:57,920 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 562 more)] === [2024-11-28 03:11:57,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:57,927 INFO L85 PathProgramCache]: Analyzing trace with hash 193572, now seen corresponding path program 1 times [2024-11-28 03:11:57,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:57,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814052469] [2024-11-28 03:11:57,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:57,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:58,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:11:58,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:58,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814052469] [2024-11-28 03:11:58,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814052469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:58,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:58,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:11:58,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445914482] [2024-11-28 03:11:58,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:58,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:11:58,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:58,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:11:58,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:11:59,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 935 [2024-11-28 03:11:59,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 860 places, 935 transitions, 1877 flow. Second operand has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 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) [2024-11-28 03:11:59,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:11:59,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 935 [2024-11-28 03:11:59,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:12,864 INFO L124 PetriNetUnfolderBase]: 36148/78412 cut-off events. [2024-11-28 03:12:12,865 INFO L125 PetriNetUnfolderBase]: For 7/10 co-relation queries the response was YES. [2024-11-28 03:12:12,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144210 conditions, 78412 events. 36148/78412 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 796451 event pairs, 8638 based on Foata normal form. 764/49680 useless extension candidates. Maximal degree in co-relation 142964. Up to 36122 conditions per place. [2024-11-28 03:12:13,225 INFO L140 encePairwiseOnDemand]: 617/935 looper letters, 941 selfloop transitions, 73 changer transitions 0/1205 dead transitions. [2024-11-28 03:12:13,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 1205 transitions, 4445 flow [2024-11-28 03:12:13,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:12:13,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2026 transitions. [2024-11-28 03:12:13,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7222816399286988 [2024-11-28 03:12:13,272 INFO L175 Difference]: Start difference. First operand has 860 places, 935 transitions, 1877 flow. Second operand 3 states and 2026 transitions. [2024-11-28 03:12:13,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 1205 transitions, 4445 flow [2024-11-28 03:12:13,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 1205 transitions, 4445 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:12:13,322 INFO L231 Difference]: Finished difference. Result has 668 places, 801 transitions, 2133 flow [2024-11-28 03:12:13,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=935, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=664, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2133, PETRI_PLACES=668, PETRI_TRANSITIONS=801} [2024-11-28 03:12:13,331 INFO L279 CegarLoopForPetriNet]: 860 programPoint places, -192 predicate places. [2024-11-28 03:12:13,332 INFO L471 AbstractCegarLoop]: Abstraction has has 668 places, 801 transitions, 2133 flow [2024-11-28 03:12:13,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 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) [2024-11-28 03:12:13,333 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:13,334 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-28 03:12:13,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:12:13,335 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 562 more)] === [2024-11-28 03:12:13,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:13,336 INFO L85 PathProgramCache]: Analyzing trace with hash 193573, now seen corresponding path program 1 times [2024-11-28 03:12:13,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:13,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641045793] [2024-11-28 03:12:13,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:13,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:13,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:13,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641045793] [2024-11-28 03:12:13,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641045793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:13,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:13,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:12:13,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961094159] [2024-11-28 03:12:13,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:13,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:12:13,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:13,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:12:13,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:14,106 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 935 [2024-11-28 03:12:14,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 801 transitions, 2133 flow. Second operand has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 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) [2024-11-28 03:12:14,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:14,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 935 [2024-11-28 03:12:14,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:25,494 INFO L124 PetriNetUnfolderBase]: 35220/77434 cut-off events. [2024-11-28 03:12:25,494 INFO L125 PetriNetUnfolderBase]: For 7534/7846 co-relation queries the response was YES. [2024-11-28 03:12:25,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153363 conditions, 77434 events. 35220/77434 cut-off events. For 7534/7846 co-relation queries the response was YES. Maximal size of possible extension queue 953. Compared 785039 event pairs, 22754 based on Foata normal form. 2/51435 useless extension candidates. Maximal degree in co-relation 152007. Up to 62837 conditions per place. [2024-11-28 03:12:25,813 INFO L140 encePairwiseOnDemand]: 928/935 looper letters, 551 selfloop transitions, 4 changer transitions 0/813 dead transitions. [2024-11-28 03:12:25,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 813 transitions, 3271 flow [2024-11-28 03:12:25,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:25,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:12:25,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1213 transitions. [2024-11-28 03:12:25,821 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4324420677361854 [2024-11-28 03:12:25,822 INFO L175 Difference]: Start difference. First operand has 668 places, 801 transitions, 2133 flow. Second operand 3 states and 1213 transitions. [2024-11-28 03:12:25,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 813 transitions, 3271 flow [2024-11-28 03:12:25,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 665 places, 813 transitions, 3123 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:12:25,908 INFO L231 Difference]: Finished difference. Result has 666 places, 801 transitions, 2005 flow [2024-11-28 03:12:25,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=935, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=663, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=794, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2005, PETRI_PLACES=666, PETRI_TRANSITIONS=801} [2024-11-28 03:12:25,911 INFO L279 CegarLoopForPetriNet]: 860 programPoint places, -194 predicate places. [2024-11-28 03:12:25,911 INFO L471 AbstractCegarLoop]: Abstraction has has 666 places, 801 transitions, 2005 flow [2024-11-28 03:12:25,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 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) [2024-11-28 03:12:25,912 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:25,912 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 03:12:25,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:12:25,912 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 562 more)] === [2024-11-28 03:12:25,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:25,913 INFO L85 PathProgramCache]: Analyzing trace with hash 186236865, now seen corresponding path program 1 times [2024-11-28 03:12:25,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:25,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835605414] [2024-11-28 03:12:25,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:25,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:26,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:26,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:26,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835605414] [2024-11-28 03:12:26,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835605414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:26,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:26,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:12:26,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065446436] [2024-11-28 03:12:26,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:26,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:12:26,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:26,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:12:26,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:12:26,673 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 935 [2024-11-28 03:12:26,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 801 transitions, 2005 flow. Second operand has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:26,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:26,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 935 [2024-11-28 03:12:26,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:12:38,658 INFO L124 PetriNetUnfolderBase]: 38525/83176 cut-off events. [2024-11-28 03:12:38,658 INFO L125 PetriNetUnfolderBase]: For 4641/4685 co-relation queries the response was YES. [2024-11-28 03:12:38,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165013 conditions, 83176 events. 38525/83176 cut-off events. For 4641/4685 co-relation queries the response was YES. Maximal size of possible extension queue 981. Compared 843351 event pairs, 8292 based on Foata normal form. 37/53772 useless extension candidates. Maximal degree in co-relation 163695. Up to 36189 conditions per place. [2024-11-28 03:12:38,968 INFO L140 encePairwiseOnDemand]: 782/935 looper letters, 1001 selfloop transitions, 195 changer transitions 0/1384 dead transitions. [2024-11-28 03:12:38,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 1384 transitions, 5608 flow [2024-11-28 03:12:38,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:12:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:12:38,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2169 transitions. [2024-11-28 03:12:38,979 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46395721925133687 [2024-11-28 03:12:38,979 INFO L175 Difference]: Start difference. First operand has 666 places, 801 transitions, 2005 flow. Second operand 5 states and 2169 transitions. [2024-11-28 03:12:38,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 1384 transitions, 5608 flow [2024-11-28 03:12:38,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 1384 transitions, 5603 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:12:39,018 INFO L231 Difference]: Finished difference. Result has 670 places, 907 transitions, 3082 flow [2024-11-28 03:12:39,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=935, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=663, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=799, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3082, PETRI_PLACES=670, PETRI_TRANSITIONS=907} [2024-11-28 03:12:39,020 INFO L279 CegarLoopForPetriNet]: 860 programPoint places, -190 predicate places. [2024-11-28 03:12:39,020 INFO L471 AbstractCegarLoop]: Abstraction has has 670 places, 907 transitions, 3082 flow [2024-11-28 03:12:39,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:39,021 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:12:39,021 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 03:12:39,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:12:39,022 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 562 more)] === [2024-11-28 03:12:39,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:39,022 INFO L85 PathProgramCache]: Analyzing trace with hash 186236866, now seen corresponding path program 1 times [2024-11-28 03:12:39,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:39,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107795370] [2024-11-28 03:12:39,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:39,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:39,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:39,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:39,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107795370] [2024-11-28 03:12:39,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107795370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:39,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:39,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:12:39,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436716605] [2024-11-28 03:12:39,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:39,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:12:39,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:39,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:12:39,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:12:40,405 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 935 [2024-11-28 03:12:40,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 907 transitions, 3082 flow. Second operand has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 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) [2024-11-28 03:12:40,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:12:40,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 935 [2024-11-28 03:12:40,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand