./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:48:20,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:48:20,285 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:48:20,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:48:20,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:48:20,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:48:20,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:48:20,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:48:20,326 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:48:20,328 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:48:20,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:48:20,328 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:48:20,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:48:20,330 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:48:20,331 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:48:20,331 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:48:20,332 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:48:20,332 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:48:20,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:48:20,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:48:20,333 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:48:20,334 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:48:20,334 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:48:20,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:48:20,335 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:48:20,335 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:48:20,335 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:48:20,335 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:48:20,336 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:48:20,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:48:20,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:48:20,337 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:48:20,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:48:20,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:48:20,338 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:48:20,338 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:48:20,339 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:48:20,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:48:20,339 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:48:20,339 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:48:20,340 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:48:20,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:48:20,340 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:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2024-10-11 19:48:20,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:48:20,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:48:20,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:48:20,636 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:48:20,636 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:48:20,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2024-10-11 19:48:22,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:48:22,391 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:48:22,392 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2024-10-11 19:48:22,410 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5bed33e9f/e1921744d9cc473c8bc00405a1156901/FLAGf6da6622a [2024-10-11 19:48:22,426 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5bed33e9f/e1921744d9cc473c8bc00405a1156901 [2024-10-11 19:48:22,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:48:22,434 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:48:22,436 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:48:22,437 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:48:22,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:48:22,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:48:22" (1/1) ... [2024-10-11 19:48:22,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ee1104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:48:22, skipping insertion in model container [2024-10-11 19:48:22,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:48:22" (1/1) ... [2024-10-11 19:48:22,504 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:48:23,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:48:23,057 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:48:23,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:48:23,276 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:48:23,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:48:23 WrapperNode [2024-10-11 19:48:23,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:48:23,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:48:23,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:48:23,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:48:23,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:48:23" (1/1) ... [2024-10-11 19:48:23,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:48:23" (1/1) ... [2024-10-11 19:48:23,338 INFO L138 Inliner]: procedures = 279, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 219 [2024-10-11 19:48:23,338 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:48:23,339 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:48:23,339 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:48:23,339 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:48:23,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:48:23" (1/1) ... [2024-10-11 19:48:23,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:48:23" (1/1) ... [2024-10-11 19:48:23,356 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:48:23" (1/1) ... [2024-10-11 19:48:23,381 INFO L175 MemorySlicer]: Split 30 memory accesses to 6 slices as follows [2, 2, 5, 5, 14, 2]. 47 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5, 0, 0]. The 10 writes are split as follows [0, 1, 0, 0, 8, 1]. [2024-10-11 19:48:23,381 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:48:23" (1/1) ... [2024-10-11 19:48:23,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:48:23" (1/1) ... [2024-10-11 19:48:23,404 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:48:23" (1/1) ... [2024-10-11 19:48:23,412 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:48:23" (1/1) ... [2024-10-11 19:48:23,416 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:48:23" (1/1) ... [2024-10-11 19:48:23,419 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:48:23" (1/1) ... [2024-10-11 19:48:23,424 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:48:23,426 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:48:23,426 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:48:23,426 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:48:23,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:48:23" (1/1) ... [2024-10-11 19:48:23,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:48:23,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:48:23,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:48:23,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:48:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 19:48:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 19:48:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-11 19:48:23,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-11 19:48:23,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-11 19:48:23,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-11 19:48:23,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-11 19:48:23,524 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-10-11 19:48:23,525 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-10-11 19:48:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 19:48:23,525 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 19:48:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 19:48:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 19:48:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 19:48:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 19:48:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-11 19:48:23,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-11 19:48:23,528 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-10-11 19:48:23,528 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-10-11 19:48:23,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 19:48:23,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 19:48:23,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 19:48:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 19:48:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-11 19:48:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-11 19:48:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 19:48:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:48:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:48:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 19:48:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 19:48:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-11 19:48:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-11 19:48:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-11 19:48:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-11 19:48:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:48:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 19:48:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 19:48:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 19:48:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 19:48:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-11 19:48:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:48:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:48:23,536 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:48:23,735 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:48:23,737 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:48:24,210 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:48:24,211 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:48:24,460 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:48:24,460 INFO L314 CfgBuilder]: Removed 15 assume(true) statements. [2024-10-11 19:48:24,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:48:24 BoogieIcfgContainer [2024-10-11 19:48:24,462 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:48:24,464 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:48:24,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:48:24,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:48:24,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:48:22" (1/3) ... [2024-10-11 19:48:24,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae6a0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:48:24, skipping insertion in model container [2024-10-11 19:48:24,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:48:23" (2/3) ... [2024-10-11 19:48:24,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae6a0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:48:24, skipping insertion in model container [2024-10-11 19:48:24,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:48:24" (3/3) ... [2024-10-11 19:48:24,471 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2024-10-11 19:48:24,485 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:48:24,485 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-10-11 19:48:24,485 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:48:24,602 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-11 19:48:24,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 130 transitions, 280 flow [2024-10-11 19:48:24,735 INFO L124 PetriNetUnfolderBase]: 38/266 cut-off events. [2024-10-11 19:48:24,735 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-11 19:48:24,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 266 events. 38/266 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1413 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 140. Up to 8 conditions per place. [2024-10-11 19:48:24,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 130 transitions, 280 flow [2024-10-11 19:48:24,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 130 transitions, 280 flow [2024-10-11 19:48:24,761 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:48:24,768 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;@b751590, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:48:24,768 INFO L334 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2024-10-11 19:48:24,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:48:24,772 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-10-11 19:48:24,772 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:48:24,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:48:24,774 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-10-11 19:48:24,774 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-10-11 19:48:24,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:48:24,781 INFO L85 PathProgramCache]: Analyzing trace with hash 19230, now seen corresponding path program 1 times [2024-10-11 19:48:24,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:48:24,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873585071] [2024-10-11 19:48:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:48:24,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:48:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:48:25,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:48:25,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:48:25,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873585071] [2024-10-11 19:48:25,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873585071] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:48:25,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:48:25,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:48:25,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110535320] [2024-10-11 19:48:25,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:48:25,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:48:25,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:48:25,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:48:25,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:48:25,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 130 [2024-10-11 19:48:25,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 130 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2024-10-11 19:48:25,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:48:25,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 130 [2024-10-11 19:48:25,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:48:26,292 INFO L124 PetriNetUnfolderBase]: 2588/6143 cut-off events. [2024-10-11 19:48:26,292 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-10-11 19:48:26,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10362 conditions, 6143 events. 2588/6143 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 49900 event pairs, 2402 based on Foata normal form. 464/5654 useless extension candidates. Maximal degree in co-relation 9010. Up to 4126 conditions per place. [2024-10-11 19:48:26,358 INFO L140 encePairwiseOnDemand]: 113/130 looper letters, 50 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-10-11 19:48:26,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 114 transitions, 352 flow [2024-10-11 19:48:26,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:48:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:48:26,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2024-10-11 19:48:26,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6487179487179487 [2024-10-11 19:48:26,379 INFO L175 Difference]: Start difference. First operand has 116 places, 130 transitions, 280 flow. Second operand 3 states and 253 transitions. [2024-10-11 19:48:26,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 114 transitions, 352 flow [2024-10-11 19:48:26,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 114 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:48:26,394 INFO L231 Difference]: Finished difference. Result has 115 places, 114 transitions, 252 flow [2024-10-11 19:48:26,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=115, PETRI_TRANSITIONS=114} [2024-10-11 19:48:26,402 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -1 predicate places. [2024-10-11 19:48:26,402 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 114 transitions, 252 flow [2024-10-11 19:48:26,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2024-10-11 19:48:26,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:48:26,403 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-10-11 19:48:26,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:48:26,404 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-10-11 19:48:26,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:48:26,405 INFO L85 PathProgramCache]: Analyzing trace with hash 19231, now seen corresponding path program 1 times [2024-10-11 19:48:26,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:48:26,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145040271] [2024-10-11 19:48:26,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:48:26,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:48:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:48:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:48:26,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:48:26,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145040271] [2024-10-11 19:48:26,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145040271] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:48:26,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:48:26,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:48:26,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454071854] [2024-10-11 19:48:26,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:48:26,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:48:26,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:48:26,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:48:26,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:48:26,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2024-10-11 19:48:26,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2024-10-11 19:48:26,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:48:26,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2024-10-11 19:48:26,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:48:27,406 INFO L124 PetriNetUnfolderBase]: 2588/6141 cut-off events. [2024-10-11 19:48:27,408 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-10-11 19:48:27,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10362 conditions, 6141 events. 2588/6141 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 49923 event pairs, 2402 based on Foata normal form. 2/5190 useless extension candidates. Maximal degree in co-relation 10350. Up to 4126 conditions per place. [2024-10-11 19:48:27,466 INFO L140 encePairwiseOnDemand]: 126/130 looper letters, 49 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-10-11 19:48:27,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 112 transitions, 350 flow [2024-10-11 19:48:27,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:48:27,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:48:27,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-10-11 19:48:27,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6205128205128205 [2024-10-11 19:48:27,470 INFO L175 Difference]: Start difference. First operand has 115 places, 114 transitions, 252 flow. Second operand 3 states and 242 transitions. [2024-10-11 19:48:27,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 112 transitions, 350 flow [2024-10-11 19:48:27,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 112 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:48:27,480 INFO L231 Difference]: Finished difference. Result has 113 places, 112 transitions, 248 flow [2024-10-11 19:48:27,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=113, PETRI_TRANSITIONS=112} [2024-10-11 19:48:27,481 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -3 predicate places. [2024-10-11 19:48:27,481 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 112 transitions, 248 flow [2024-10-11 19:48:27,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2024-10-11 19:48:27,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:48:27,482 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 19:48:27,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:48:27,482 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-10-11 19:48:27,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:48:27,483 INFO L85 PathProgramCache]: Analyzing trace with hash 573440573, now seen corresponding path program 1 times [2024-10-11 19:48:27,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:48:27,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220887768] [2024-10-11 19:48:27,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:48:27,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:48:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:48:27,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:48:27,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:48:27,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220887768] [2024-10-11 19:48:27,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220887768] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:48:27,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:48:27,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:48:27,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713478134] [2024-10-11 19:48:27,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:48:27,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:48:27,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:48:27,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:48:27,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:48:27,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 130 [2024-10-11 19:48:27,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 112 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2024-10-11 19:48:27,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:48:27,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 130 [2024-10-11 19:48:27,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:48:28,457 INFO L124 PetriNetUnfolderBase]: 2956/6668 cut-off events. [2024-10-11 19:48:28,458 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-10-11 19:48:28,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11489 conditions, 6668 events. 2956/6668 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 54759 event pairs, 2046 based on Foata normal form. 0/5774 useless extension candidates. Maximal degree in co-relation 11477. Up to 3553 conditions per place. [2024-10-11 19:48:28,508 INFO L140 encePairwiseOnDemand]: 126/130 looper letters, 83 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2024-10-11 19:48:28,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 142 transitions, 478 flow [2024-10-11 19:48:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:48:28,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:48:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2024-10-11 19:48:28,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-10-11 19:48:28,513 INFO L175 Difference]: Start difference. First operand has 113 places, 112 transitions, 248 flow. Second operand 3 states and 270 transitions. [2024-10-11 19:48:28,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 142 transitions, 478 flow [2024-10-11 19:48:28,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 142 transitions, 474 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:48:28,519 INFO L231 Difference]: Finished difference. Result has 111 places, 110 transitions, 244 flow [2024-10-11 19:48:28,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=111, PETRI_TRANSITIONS=110} [2024-10-11 19:48:28,520 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -5 predicate places. [2024-10-11 19:48:28,520 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 110 transitions, 244 flow [2024-10-11 19:48:28,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2024-10-11 19:48:28,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:48:28,521 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 19:48:28,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:48:28,521 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-10-11 19:48:28,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:48:28,522 INFO L85 PathProgramCache]: Analyzing trace with hash 573440574, now seen corresponding path program 1 times [2024-10-11 19:48:28,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:48:28,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978788946] [2024-10-11 19:48:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:48:28,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:48:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:48:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:48:28,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:48:28,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978788946] [2024-10-11 19:48:28,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978788946] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:48:28,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:48:28,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:48:28,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174933321] [2024-10-11 19:48:28,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:48:28,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:48:28,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:48:28,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:48:28,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:48:28,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 130 [2024-10-11 19:48:28,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 110 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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) [2024-10-11 19:48:28,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:48:28,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 130 [2024-10-11 19:48:28,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:48:29,411 INFO L124 PetriNetUnfolderBase]: 2511/5835 cut-off events. [2024-10-11 19:48:29,412 INFO L125 PetriNetUnfolderBase]: For 355/360 co-relation queries the response was YES. [2024-10-11 19:48:29,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10122 conditions, 5835 events. 2511/5835 cut-off events. For 355/360 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 46712 event pairs, 2165 based on Foata normal form. 1/5019 useless extension candidates. Maximal degree in co-relation 9080. Up to 3977 conditions per place. [2024-10-11 19:48:29,450 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 52 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2024-10-11 19:48:29,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 360 flow [2024-10-11 19:48:29,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:48:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:48:29,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2024-10-11 19:48:29,453 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6384615384615384 [2024-10-11 19:48:29,453 INFO L175 Difference]: Start difference. First operand has 111 places, 110 transitions, 244 flow. Second operand 3 states and 249 transitions. [2024-10-11 19:48:29,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 360 flow [2024-10-11 19:48:29,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 113 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:48:29,467 INFO L231 Difference]: Finished difference. Result has 112 places, 112 transitions, 261 flow [2024-10-11 19:48:29,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=112, PETRI_TRANSITIONS=112} [2024-10-11 19:48:29,468 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -4 predicate places. [2024-10-11 19:48:29,468 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 112 transitions, 261 flow [2024-10-11 19:48:29,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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) [2024-10-11 19:48:29,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:48:29,469 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:48:29,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 19:48:29,471 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-10-11 19:48:29,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:48:29,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2011072069, now seen corresponding path program 1 times [2024-10-11 19:48:29,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:48:29,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390138627] [2024-10-11 19:48:29,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:48:29,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:48:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:48:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:48:29,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:48:29,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390138627] [2024-10-11 19:48:29,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390138627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:48:29,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:48:29,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:48:29,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149156020] [2024-10-11 19:48:29,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:48:29,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:48:29,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:48:29,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:48:29,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:48:29,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 130 [2024-10-11 19:48:29,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 112 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2024-10-11 19:48:29,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:48:29,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 130 [2024-10-11 19:48:29,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:48:30,573 INFO L124 PetriNetUnfolderBase]: 3184/7340 cut-off events. [2024-10-11 19:48:30,574 INFO L125 PetriNetUnfolderBase]: For 376/381 co-relation queries the response was YES. [2024-10-11 19:48:30,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12695 conditions, 7340 events. 3184/7340 cut-off events. For 376/381 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 60149 event pairs, 2356 based on Foata normal form. 0/6286 useless extension candidates. Maximal degree in co-relation 11680. Up to 3955 conditions per place. [2024-10-11 19:48:30,619 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 93 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2024-10-11 19:48:30,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 154 transitions, 554 flow [2024-10-11 19:48:30,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:48:30,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:48:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2024-10-11 19:48:30,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7282051282051282 [2024-10-11 19:48:30,621 INFO L175 Difference]: Start difference. First operand has 112 places, 112 transitions, 261 flow. Second operand 3 states and 284 transitions. [2024-10-11 19:48:30,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 154 transitions, 554 flow [2024-10-11 19:48:30,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 154 transitions, 551 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:48:30,626 INFO L231 Difference]: Finished difference. Result has 115 places, 115 transitions, 294 flow [2024-10-11 19:48:30,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=115, PETRI_TRANSITIONS=115} [2024-10-11 19:48:30,627 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, -1 predicate places. [2024-10-11 19:48:30,627 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 115 transitions, 294 flow [2024-10-11 19:48:30,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2024-10-11 19:48:30,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:48:30,628 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:48:30,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 19:48:30,628 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-10-11 19:48:30,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:48:30,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2011072068, now seen corresponding path program 1 times [2024-10-11 19:48:30,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:48:30,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446650531] [2024-10-11 19:48:30,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:48:30,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:48:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:48:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:48:30,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:48:30,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446650531] [2024-10-11 19:48:30,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446650531] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:48:30,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:48:30,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:48:30,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552192729] [2024-10-11 19:48:30,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:48:30,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:48:30,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:48:30,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:48:30,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:48:30,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2024-10-11 19:48:30,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 115 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2024-10-11 19:48:30,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:48:30,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2024-10-11 19:48:30,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:48:31,686 INFO L124 PetriNetUnfolderBase]: 3913/8853 cut-off events. [2024-10-11 19:48:31,686 INFO L125 PetriNetUnfolderBase]: For 2988/3329 co-relation queries the response was YES. [2024-10-11 19:48:31,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17314 conditions, 8853 events. 3913/8853 cut-off events. For 2988/3329 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 75627 event pairs, 2795 based on Foata normal form. 543/8263 useless extension candidates. Maximal degree in co-relation 16271. Up to 5385 conditions per place. [2024-10-11 19:48:31,770 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 94 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2024-10-11 19:48:31,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 157 transitions, 599 flow [2024-10-11 19:48:31,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:48:31,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:48:31,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2024-10-11 19:48:31,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2024-10-11 19:48:31,772 INFO L175 Difference]: Start difference. First operand has 115 places, 115 transitions, 294 flow. Second operand 3 states and 285 transitions. [2024-10-11 19:48:31,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 157 transitions, 599 flow [2024-10-11 19:48:31,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 157 transitions, 585 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:48:31,782 INFO L231 Difference]: Finished difference. Result has 116 places, 118 transitions, 321 flow [2024-10-11 19:48:31,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=321, PETRI_PLACES=116, PETRI_TRANSITIONS=118} [2024-10-11 19:48:31,785 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, 0 predicate places. [2024-10-11 19:48:31,786 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 321 flow [2024-10-11 19:48:31,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2024-10-11 19:48:31,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:48:31,787 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:48:31,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 19:48:31,787 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-10-11 19:48:31,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:48:31,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2081156727, now seen corresponding path program 1 times [2024-10-11 19:48:31,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:48:31,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484054377] [2024-10-11 19:48:31,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:48:31,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:48:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:48:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:48:31,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:48:31,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484054377] [2024-10-11 19:48:31,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484054377] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:48:31,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12029260] [2024-10-11 19:48:31,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:48:31,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:48:31,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:48:31,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:48:31,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 19:48:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:48:32,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 19:48:32,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:48:32,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-11 19:48:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:48:32,228 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:48:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:48:32,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12029260] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:48:32,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:48:32,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-11 19:48:32,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656248668] [2024-10-11 19:48:32,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:48:32,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 19:48:32,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:48:32,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 19:48:32,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-11 19:48:32,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2024-10-11 19:48:32,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 118 transitions, 321 flow. Second operand has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 states have internal predecessors, (459), 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) [2024-10-11 19:48:32,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:48:32,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2024-10-11 19:48:32,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:48:33,138 INFO L124 PetriNetUnfolderBase]: 2263/5285 cut-off events. [2024-10-11 19:48:33,138 INFO L125 PetriNetUnfolderBase]: For 1649/2599 co-relation queries the response was YES. [2024-10-11 19:48:33,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9739 conditions, 5285 events. 2263/5285 cut-off events. For 1649/2599 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 42062 event pairs, 1991 based on Foata normal form. 57/4594 useless extension candidates. Maximal degree in co-relation 9528. Up to 3553 conditions per place. [2024-10-11 19:48:33,178 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 64 selfloop transitions, 7 changer transitions 0/129 dead transitions. [2024-10-11 19:48:33,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 129 transitions, 483 flow [2024-10-11 19:48:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:48:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:48:33,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 449 transitions. [2024-10-11 19:48:33,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5756410256410256 [2024-10-11 19:48:33,181 INFO L175 Difference]: Start difference. First operand has 116 places, 118 transitions, 321 flow. Second operand 6 states and 449 transitions. [2024-10-11 19:48:33,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 129 transitions, 483 flow [2024-10-11 19:48:33,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 129 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:48:33,186 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 320 flow [2024-10-11 19:48:33,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2024-10-11 19:48:33,187 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, 3 predicate places. [2024-10-11 19:48:33,187 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 320 flow [2024-10-11 19:48:33,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 states have internal predecessors, (459), 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) [2024-10-11 19:48:33,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:48:33,188 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 19:48:33,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 19:48:33,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:48:33,389 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-10-11 19:48:33,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:48:33,390 INFO L85 PathProgramCache]: Analyzing trace with hash 91349791, now seen corresponding path program 1 times [2024-10-11 19:48:33,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:48:33,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819457878] [2024-10-11 19:48:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:48:33,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:48:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:48:33,416 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:48:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:48:33,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:48:33,448 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:48:33,449 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (64 of 65 remaining) [2024-10-11 19:48:33,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 65 remaining) [2024-10-11 19:48:33,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 65 remaining) [2024-10-11 19:48:33,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 65 remaining) [2024-10-11 19:48:33,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 65 remaining) [2024-10-11 19:48:33,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 65 remaining) [2024-10-11 19:48:33,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 65 remaining) [2024-10-11 19:48:33,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 65 remaining) [2024-10-11 19:48:33,452 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 65 remaining) [2024-10-11 19:48:33,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 65 remaining) [2024-10-11 19:48:33,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 65 remaining) [2024-10-11 19:48:33,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 65 remaining) [2024-10-11 19:48:33,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 65 remaining) [2024-10-11 19:48:33,453 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 65 remaining) [2024-10-11 19:48:33,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 65 remaining) [2024-10-11 19:48:33,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14ASSERT_VIOLATIONMEMORY_LEAK (49 of 65 remaining) [2024-10-11 19:48:33,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 65 remaining) [2024-10-11 19:48:33,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 65 remaining) [2024-10-11 19:48:33,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 65 remaining) [2024-10-11 19:48:33,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 65 remaining) [2024-10-11 19:48:33,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 65 remaining) [2024-10-11 19:48:33,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 65 remaining) [2024-10-11 19:48:33,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 65 remaining) [2024-10-11 19:48:33,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 65 remaining) [2024-10-11 19:48:33,455 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 65 remaining) [2024-10-11 19:48:33,456 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 65 remaining) [2024-10-11 19:48:33,456 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 65 remaining) [2024-10-11 19:48:33,458 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 65 remaining) [2024-10-11 19:48:33,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (36 of 65 remaining) [2024-10-11 19:48:33,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 65 remaining) [2024-10-11 19:48:33,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 65 remaining) [2024-10-11 19:48:33,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 65 remaining) [2024-10-11 19:48:33,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 65 remaining) [2024-10-11 19:48:33,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 65 remaining) [2024-10-11 19:48:33,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 65 remaining) [2024-10-11 19:48:33,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 65 remaining) [2024-10-11 19:48:33,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 65 remaining) [2024-10-11 19:48:33,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 65 remaining) [2024-10-11 19:48:33,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 65 remaining) [2024-10-11 19:48:33,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 65 remaining) [2024-10-11 19:48:33,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 65 remaining) [2024-10-11 19:48:33,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 65 remaining) [2024-10-11 19:48:33,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 65 remaining) [2024-10-11 19:48:33,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 65 remaining) [2024-10-11 19:48:33,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 65 remaining) [2024-10-11 19:48:33,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 65 remaining) [2024-10-11 19:48:33,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 65 remaining) [2024-10-11 19:48:33,496 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 65 remaining) [2024-10-11 19:48:33,496 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 65 remaining) [2024-10-11 19:48:33,496 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 65 remaining) [2024-10-11 19:48:33,496 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 65 remaining) [2024-10-11 19:48:33,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 65 remaining) [2024-10-11 19:48:33,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 65 remaining) [2024-10-11 19:48:33,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 65 remaining) [2024-10-11 19:48:33,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14ASSERT_VIOLATIONMEMORY_LEAK (10 of 65 remaining) [2024-10-11 19:48:33,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 65 remaining) [2024-10-11 19:48:33,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 65 remaining) [2024-10-11 19:48:33,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 65 remaining) [2024-10-11 19:48:33,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 65 remaining) [2024-10-11 19:48:33,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 65 remaining) [2024-10-11 19:48:33,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 65 remaining) [2024-10-11 19:48:33,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 65 remaining) [2024-10-11 19:48:33,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 65 remaining) [2024-10-11 19:48:33,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 65 remaining) [2024-10-11 19:48:33,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 65 remaining) [2024-10-11 19:48:33,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 19:48:33,500 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:48:33,503 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:48:33,504 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 19:48:33,604 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-10-11 19:48:33,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 225 transitions, 494 flow [2024-10-11 19:48:33,734 INFO L124 PetriNetUnfolderBase]: 147/827 cut-off events. [2024-10-11 19:48:33,734 INFO L125 PetriNetUnfolderBase]: For 72/85 co-relation queries the response was YES. [2024-10-11 19:48:33,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 827 events. 147/827 cut-off events. For 72/85 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6010 event pairs, 2 based on Foata normal form. 0/469 useless extension candidates. Maximal degree in co-relation 525. Up to 32 conditions per place. [2024-10-11 19:48:33,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 225 transitions, 494 flow [2024-10-11 19:48:33,760 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 225 transitions, 494 flow [2024-10-11 19:48:33,761 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:48:33,764 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;@b751590, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:48:33,764 INFO L334 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2024-10-11 19:48:33,767 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:48:33,767 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-10-11 19:48:33,767 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:48:33,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:48:33,767 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-10-11 19:48:33,767 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 87 more)] === [2024-10-11 19:48:33,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:48:33,768 INFO L85 PathProgramCache]: Analyzing trace with hash 26366, now seen corresponding path program 1 times [2024-10-11 19:48:33,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:48:33,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293985020] [2024-10-11 19:48:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:48:33,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:48:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:48:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:48:33,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:48:33,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293985020] [2024-10-11 19:48:33,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293985020] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:48:33,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:48:33,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:48:33,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690526770] [2024-10-11 19:48:33,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:48:33,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:48:33,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:48:33,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:48:33,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:48:33,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 225 [2024-10-11 19:48:33,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 225 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2024-10-11 19:48:33,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:48:33,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 225 [2024-10-11 19:48:33,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand