./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_94-alloc_region_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:12:56,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:12:57,050 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:12:57,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:12:57,065 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:12:57,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:12:57,091 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:12:57,092 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:12:57,092 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:12:57,092 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:12:57,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:12:57,093 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:12:57,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:12:57,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:12:57,096 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:12:57,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:12:57,097 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:12:57,097 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:12:57,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:12:57,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:12:57,101 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:12:57,102 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:12:57,102 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:12:57,102 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:12:57,102 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:12:57,103 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:12:57,103 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:12:57,103 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:12:57,103 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:12:57,104 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:12:57,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:12:57,104 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:12:57,104 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:12:57,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:12:57,104 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:12:57,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:12:57,105 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:12:57,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:12:57,105 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:12:57,106 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:12:57,106 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:12:57,106 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:12:57,106 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 [2024-10-24 19:12:57,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:12:57,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:12:57,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:12:57,412 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:12:57,413 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:12:57,414 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2024-10-24 19:12:58,863 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:12:59,119 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:12:59,121 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2024-10-24 19:12:59,141 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9ae3df3f/f89a344427ea4c4cb9c3efadc4d58999/FLAGbc82f4d24 [2024-10-24 19:12:59,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9ae3df3f/f89a344427ea4c4cb9c3efadc4d58999 [2024-10-24 19:12:59,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:12:59,156 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:12:59,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:12:59,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:12:59,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:12:59,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:12:59" (1/1) ... [2024-10-24 19:12:59,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a0f1133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:12:59, skipping insertion in model container [2024-10-24 19:12:59,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:12:59" (1/1) ... [2024-10-24 19:12:59,216 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:12:59,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:12:59,902 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:12:59,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:13:00,048 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:13:00,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:00 WrapperNode [2024-10-24 19:13:00,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:13:00,068 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:13:00,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:13:00,071 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:13:00,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:00" (1/1) ... [2024-10-24 19:13:00,112 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:00" (1/1) ... [2024-10-24 19:13:00,189 INFO L138 Inliner]: procedures = 378, calls = 83, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 270 [2024-10-24 19:13:00,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:13:00,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:13:00,191 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:13:00,191 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:13:00,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:00" (1/1) ... [2024-10-24 19:13:00,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:00" (1/1) ... [2024-10-24 19:13:00,216 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:00" (1/1) ... [2024-10-24 19:13:00,241 INFO L175 MemorySlicer]: Split 47 memory accesses to 7 slices as follows [2, 5, 5, 5, 2, 8, 20]. 43 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 5, 5, 5, 0, 1, 0]. The 16 writes are split as follows [0, 0, 0, 0, 1, 3, 12]. [2024-10-24 19:13:00,241 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:00" (1/1) ... [2024-10-24 19:13:00,241 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:00" (1/1) ... [2024-10-24 19:13:00,260 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:00" (1/1) ... [2024-10-24 19:13:00,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:00" (1/1) ... [2024-10-24 19:13:00,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:00" (1/1) ... [2024-10-24 19:13:00,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:00" (1/1) ... [2024-10-24 19:13:00,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:13:00,286 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:13:00,286 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:13:00,288 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:13:00,289 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:00" (1/1) ... [2024-10-24 19:13:00,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:13:00,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:13:00,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 19:13:00,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 19:13:00,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 19:13:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 19:13:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 19:13:00,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 19:13:00,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-24 19:13:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-24 19:13:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-24 19:13:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-10-24 19:13:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 19:13:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-24 19:13:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-24 19:13:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-24 19:13:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-10-24 19:13:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-10-24 19:13:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-10-24 19:13:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-10-24 19:13:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 19:13:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 19:13:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 19:13:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 19:13:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 19:13:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-24 19:13:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-24 19:13:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-24 19:13:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 19:13:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 19:13:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 19:13:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 19:13:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-24 19:13:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-24 19:13:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-24 19:13:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 19:13:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 19:13:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:13:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 19:13:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 19:13:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 19:13:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-24 19:13:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-24 19:13:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-24 19:13:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-10-24 19:13:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 19:13:00,395 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 19:13:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 19:13:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 19:13:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 19:13:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 19:13:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-24 19:13:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-24 19:13:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-24 19:13:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:13:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:13:00,399 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:13:00,610 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:13:00,612 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:13:01,118 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:13:01,119 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:13:01,330 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:13:01,330 INFO L314 CfgBuilder]: Removed 23 assume(true) statements. [2024-10-24 19:13:01,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:13:01 BoogieIcfgContainer [2024-10-24 19:13:01,331 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:13:01,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:13:01,332 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:13:01,337 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:13:01,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:12:59" (1/3) ... [2024-10-24 19:13:01,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3b40b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:13:01, skipping insertion in model container [2024-10-24 19:13:01,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:13:00" (2/3) ... [2024-10-24 19:13:01,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3b40b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:13:01, skipping insertion in model container [2024-10-24 19:13:01,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:13:01" (3/3) ... [2024-10-24 19:13:01,341 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2024-10-24 19:13:01,359 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:13:01,359 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2024-10-24 19:13:01,359 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:13:01,436 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-24 19:13:01,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 197 transitions, 401 flow [2024-10-24 19:13:01,560 INFO L124 PetriNetUnfolderBase]: 44/298 cut-off events. [2024-10-24 19:13:01,561 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 19:13:01,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 298 events. 44/298 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1437 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 180. Up to 8 conditions per place. [2024-10-24 19:13:01,571 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 197 transitions, 401 flow [2024-10-24 19:13:01,580 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 197 transitions, 401 flow [2024-10-24 19:13:01,593 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:13:01,599 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;@745c7d9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:13:01,599 INFO L334 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2024-10-24 19:13:01,601 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:13:01,601 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-10-24 19:13:01,602 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:13:01,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:01,602 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-10-24 19:13:01,603 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-10-24 19:13:01,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:01,607 INFO L85 PathProgramCache]: Analyzing trace with hash 23793, now seen corresponding path program 1 times [2024-10-24 19:13:01,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:01,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080337202] [2024-10-24 19:13:01,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:01,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:01,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:01,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080337202] [2024-10-24 19:13:01,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080337202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:01,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:01,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:13:02,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874623125] [2024-10-24 19:13:02,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:02,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:13:02,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:02,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:13:02,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:13:02,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 197 [2024-10-24 19:13:02,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 197 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2024-10-24 19:13:02,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:02,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 197 [2024-10-24 19:13:02,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:02,847 INFO L124 PetriNetUnfolderBase]: 947/3319 cut-off events. [2024-10-24 19:13:02,847 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:13:02,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5176 conditions, 3319 events. 947/3319 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 26936 event pairs, 806 based on Foata normal form. 518/3341 useless extension candidates. Maximal degree in co-relation 5027. Up to 1743 conditions per place. [2024-10-24 19:13:02,878 INFO L140 encePairwiseOnDemand]: 167/197 looper letters, 91 selfloop transitions, 2 changer transitions 0/193 dead transitions. [2024-10-24 19:13:02,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 193 transitions, 579 flow [2024-10-24 19:13:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:13:02,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:13:02,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2024-10-24 19:13:02,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7326565143824028 [2024-10-24 19:13:02,897 INFO L175 Difference]: Start difference. First operand has 171 places, 197 transitions, 401 flow. Second operand 3 states and 433 transitions. [2024-10-24 19:13:02,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 193 transitions, 579 flow [2024-10-24 19:13:02,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 193 transitions, 579 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 19:13:02,907 INFO L231 Difference]: Finished difference. Result has 168 places, 167 transitions, 345 flow [2024-10-24 19:13:02,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=168, PETRI_TRANSITIONS=167} [2024-10-24 19:13:02,915 INFO L277 CegarLoopForPetriNet]: 171 programPoint places, -3 predicate places. [2024-10-24 19:13:02,916 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 167 transitions, 345 flow [2024-10-24 19:13:02,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2024-10-24 19:13:02,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:02,916 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-10-24 19:13:02,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 19:13:02,917 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-10-24 19:13:02,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:02,917 INFO L85 PathProgramCache]: Analyzing trace with hash 23794, now seen corresponding path program 1 times [2024-10-24 19:13:02,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:02,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884389524] [2024-10-24 19:13:02,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:02,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:03,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:03,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884389524] [2024-10-24 19:13:03,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884389524] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:03,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:03,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:13:03,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968680084] [2024-10-24 19:13:03,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:03,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:13:03,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:03,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:13:03,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:13:03,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 197 [2024-10-24 19:13:03,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 167 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2024-10-24 19:13:03,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:03,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 197 [2024-10-24 19:13:03,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:03,658 INFO L124 PetriNetUnfolderBase]: 976/3411 cut-off events. [2024-10-24 19:13:03,662 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-24 19:13:03,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5352 conditions, 3411 events. 976/3411 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 27918 event pairs, 884 based on Foata normal form. 0/2877 useless extension candidates. Maximal degree in co-relation 5201. Up to 1903 conditions per place. [2024-10-24 19:13:03,682 INFO L140 encePairwiseOnDemand]: 193/197 looper letters, 66 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2024-10-24 19:13:03,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 165 transitions, 477 flow [2024-10-24 19:13:03,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:13:03,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:13:03,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2024-10-24 19:13:03,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.626057529610829 [2024-10-24 19:13:03,688 INFO L175 Difference]: Start difference. First operand has 168 places, 167 transitions, 345 flow. Second operand 3 states and 370 transitions. [2024-10-24 19:13:03,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 165 transitions, 477 flow [2024-10-24 19:13:03,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 165 transitions, 473 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:13:03,696 INFO L231 Difference]: Finished difference. Result has 166 places, 165 transitions, 341 flow [2024-10-24 19:13:03,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=166, PETRI_TRANSITIONS=165} [2024-10-24 19:13:03,700 INFO L277 CegarLoopForPetriNet]: 171 programPoint places, -5 predicate places. [2024-10-24 19:13:03,700 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 165 transitions, 341 flow [2024-10-24 19:13:03,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2024-10-24 19:13:03,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:03,701 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-24 19:13:03,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 19:13:03,702 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-10-24 19:13:03,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:03,703 INFO L85 PathProgramCache]: Analyzing trace with hash 22892651, now seen corresponding path program 1 times [2024-10-24 19:13:03,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:03,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183231708] [2024-10-24 19:13:03,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:03,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:03,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:03,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183231708] [2024-10-24 19:13:03,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183231708] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:03,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:03,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:13:03,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921672366] [2024-10-24 19:13:03,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:03,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:13:03,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:03,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:13:03,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:13:04,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 197 [2024-10-24 19:13:04,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 165 transitions, 341 flow. Second operand has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 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) [2024-10-24 19:13:04,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:04,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 197 [2024-10-24 19:13:04,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:04,669 INFO L124 PetriNetUnfolderBase]: 976/3372 cut-off events. [2024-10-24 19:13:04,669 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:13:04,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5287 conditions, 3372 events. 976/3372 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 27259 event pairs, 555 based on Foata normal form. 1/2918 useless extension candidates. Maximal degree in co-relation 5269. Up to 1717 conditions per place. [2024-10-24 19:13:04,687 INFO L140 encePairwiseOnDemand]: 185/197 looper letters, 99 selfloop transitions, 11 changer transitions 0/202 dead transitions. [2024-10-24 19:13:04,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 202 transitions, 635 flow [2024-10-24 19:13:04,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:13:04,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:13:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 698 transitions. [2024-10-24 19:13:04,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5905245346869712 [2024-10-24 19:13:04,690 INFO L175 Difference]: Start difference. First operand has 166 places, 165 transitions, 341 flow. Second operand 6 states and 698 transitions. [2024-10-24 19:13:04,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 202 transitions, 635 flow [2024-10-24 19:13:04,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 202 transitions, 631 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:13:04,696 INFO L231 Difference]: Finished difference. Result has 166 places, 166 transitions, 372 flow [2024-10-24 19:13:04,696 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=166, PETRI_TRANSITIONS=166} [2024-10-24 19:13:04,697 INFO L277 CegarLoopForPetriNet]: 171 programPoint places, -5 predicate places. [2024-10-24 19:13:04,697 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 166 transitions, 372 flow [2024-10-24 19:13:04,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 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) [2024-10-24 19:13:04,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:04,698 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-24 19:13:04,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 19:13:04,698 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-10-24 19:13:04,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:04,699 INFO L85 PathProgramCache]: Analyzing trace with hash 22892652, now seen corresponding path program 1 times [2024-10-24 19:13:04,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:04,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804662726] [2024-10-24 19:13:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:04,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:04,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:04,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804662726] [2024-10-24 19:13:04,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804662726] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:04,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:04,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:13:04,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553836939] [2024-10-24 19:13:04,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:04,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:13:04,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:04,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:13:04,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:13:05,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 197 [2024-10-24 19:13:05,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 166 transitions, 372 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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) [2024-10-24 19:13:05,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:05,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 197 [2024-10-24 19:13:05,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:05,633 INFO L124 PetriNetUnfolderBase]: 949/3279 cut-off events. [2024-10-24 19:13:05,633 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-10-24 19:13:05,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5283 conditions, 3279 events. 949/3279 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 26451 event pairs, 790 based on Foata normal form. 58/2915 useless extension candidates. Maximal degree in co-relation 5132. Up to 1796 conditions per place. [2024-10-24 19:13:05,653 INFO L140 encePairwiseOnDemand]: 187/197 looper letters, 89 selfloop transitions, 8 changer transitions 0/187 dead transitions. [2024-10-24 19:13:05,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 187 transitions, 608 flow [2024-10-24 19:13:05,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:13:05,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:13:05,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 691 transitions. [2024-10-24 19:13:05,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5846023688663282 [2024-10-24 19:13:05,656 INFO L175 Difference]: Start difference. First operand has 166 places, 166 transitions, 372 flow. Second operand 6 states and 691 transitions. [2024-10-24 19:13:05,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 187 transitions, 608 flow [2024-10-24 19:13:05,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 187 transitions, 606 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:13:05,660 INFO L231 Difference]: Finished difference. Result has 166 places, 162 transitions, 378 flow [2024-10-24 19:13:05,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=166, PETRI_TRANSITIONS=162} [2024-10-24 19:13:05,662 INFO L277 CegarLoopForPetriNet]: 171 programPoint places, -5 predicate places. [2024-10-24 19:13:05,662 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 162 transitions, 378 flow [2024-10-24 19:13:05,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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) [2024-10-24 19:13:05,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:05,663 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:13:05,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 19:13:05,663 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-10-24 19:13:05,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:05,664 INFO L85 PathProgramCache]: Analyzing trace with hash -904036997, now seen corresponding path program 1 times [2024-10-24 19:13:05,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:05,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38935280] [2024-10-24 19:13:05,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:05,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:05,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:05,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38935280] [2024-10-24 19:13:05,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38935280] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:05,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:05,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:13:05,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248908871] [2024-10-24 19:13:05,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:05,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:13:05,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:05,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:13:05,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:13:05,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 197 [2024-10-24 19:13:05,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 162 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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) [2024-10-24 19:13:05,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:05,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 197 [2024-10-24 19:13:05,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:06,181 INFO L124 PetriNetUnfolderBase]: 1001/3400 cut-off events. [2024-10-24 19:13:06,182 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2024-10-24 19:13:06,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5574 conditions, 3400 events. 1001/3400 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 27668 event pairs, 795 based on Foata normal form. 0/2988 useless extension candidates. Maximal degree in co-relation 5417. Up to 1848 conditions per place. [2024-10-24 19:13:06,203 INFO L140 encePairwiseOnDemand]: 193/197 looper letters, 98 selfloop transitions, 2 changer transitions 0/186 dead transitions. [2024-10-24 19:13:06,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 186 transitions, 628 flow [2024-10-24 19:13:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:13:06,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:13:06,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2024-10-24 19:13:06,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-24 19:13:06,205 INFO L175 Difference]: Start difference. First operand has 166 places, 162 transitions, 378 flow. Second operand 3 states and 394 transitions. [2024-10-24 19:13:06,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 186 transitions, 628 flow [2024-10-24 19:13:06,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 186 transitions, 612 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 19:13:06,209 INFO L231 Difference]: Finished difference. Result has 161 places, 160 transitions, 362 flow [2024-10-24 19:13:06,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=161, PETRI_TRANSITIONS=160} [2024-10-24 19:13:06,210 INFO L277 CegarLoopForPetriNet]: 171 programPoint places, -10 predicate places. [2024-10-24 19:13:06,211 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 160 transitions, 362 flow [2024-10-24 19:13:06,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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) [2024-10-24 19:13:06,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:06,211 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:13:06,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 19:13:06,212 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-10-24 19:13:06,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:06,212 INFO L85 PathProgramCache]: Analyzing trace with hash -904036996, now seen corresponding path program 1 times [2024-10-24 19:13:06,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:06,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149689573] [2024-10-24 19:13:06,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:06,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:06,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:06,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149689573] [2024-10-24 19:13:06,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149689573] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:06,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:06,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:13:06,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076914011] [2024-10-24 19:13:06,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:06,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:13:06,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:06,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:13:06,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:13:06,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 197 [2024-10-24 19:13:06,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 160 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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) [2024-10-24 19:13:06,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:06,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 197 [2024-10-24 19:13:06,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:06,804 INFO L124 PetriNetUnfolderBase]: 973/3274 cut-off events. [2024-10-24 19:13:06,804 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-10-24 19:13:06,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5329 conditions, 3274 events. 973/3274 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 26269 event pairs, 782 based on Foata normal form. 2/2843 useless extension candidates. Maximal degree in co-relation 5285. Up to 1875 conditions per place. [2024-10-24 19:13:06,822 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 73 selfloop transitions, 3 changer transitions 0/163 dead transitions. [2024-10-24 19:13:06,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 520 flow [2024-10-24 19:13:06,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:13:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:13:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2024-10-24 19:13:06,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6412859560067682 [2024-10-24 19:13:06,825 INFO L175 Difference]: Start difference. First operand has 161 places, 160 transitions, 362 flow. Second operand 3 states and 379 transitions. [2024-10-24 19:13:06,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 520 flow [2024-10-24 19:13:06,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 163 transitions, 516 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:13:06,828 INFO L231 Difference]: Finished difference. Result has 162 places, 162 transitions, 379 flow [2024-10-24 19:13:06,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=162, PETRI_TRANSITIONS=162} [2024-10-24 19:13:06,829 INFO L277 CegarLoopForPetriNet]: 171 programPoint places, -9 predicate places. [2024-10-24 19:13:06,830 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 162 transitions, 379 flow [2024-10-24 19:13:06,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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) [2024-10-24 19:13:06,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:06,830 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:13:06,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 19:13:06,831 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-10-24 19:13:06,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:06,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1574645629, now seen corresponding path program 1 times [2024-10-24 19:13:06,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:06,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931452458] [2024-10-24 19:13:06,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:06,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:06,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:06,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931452458] [2024-10-24 19:13:06,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931452458] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:06,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:06,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:13:06,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133961731] [2024-10-24 19:13:06,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:06,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:13:06,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:06,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:13:06,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:13:06,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 197 [2024-10-24 19:13:06,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 162 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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) [2024-10-24 19:13:06,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:06,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 197 [2024-10-24 19:13:06,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:07,385 INFO L124 PetriNetUnfolderBase]: 986/3321 cut-off events. [2024-10-24 19:13:07,386 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-10-24 19:13:07,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5453 conditions, 3321 events. 986/3321 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 26678 event pairs, 709 based on Foata normal form. 0/2888 useless extension candidates. Maximal degree in co-relation 5411. Up to 1768 conditions per place. [2024-10-24 19:13:07,401 INFO L140 encePairwiseOnDemand]: 191/197 looper letters, 108 selfloop transitions, 5 changer transitions 0/198 dead transitions. [2024-10-24 19:13:07,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 198 transitions, 690 flow [2024-10-24 19:13:07,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:13:07,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:13:07,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2024-10-24 19:13:07,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6903553299492385 [2024-10-24 19:13:07,403 INFO L175 Difference]: Start difference. First operand has 162 places, 162 transitions, 379 flow. Second operand 3 states and 408 transitions. [2024-10-24 19:13:07,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 198 transitions, 690 flow [2024-10-24 19:13:07,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 198 transitions, 687 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:13:07,407 INFO L231 Difference]: Finished difference. Result has 165 places, 165 transitions, 412 flow [2024-10-24 19:13:07,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=165, PETRI_TRANSITIONS=165} [2024-10-24 19:13:07,408 INFO L277 CegarLoopForPetriNet]: 171 programPoint places, -6 predicate places. [2024-10-24 19:13:07,409 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 165 transitions, 412 flow [2024-10-24 19:13:07,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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) [2024-10-24 19:13:07,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:07,409 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:13:07,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 19:13:07,410 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-10-24 19:13:07,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:07,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1574645630, now seen corresponding path program 1 times [2024-10-24 19:13:07,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:07,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634061036] [2024-10-24 19:13:07,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:07,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:07,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:07,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634061036] [2024-10-24 19:13:07,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634061036] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:07,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:07,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:13:07,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752265551] [2024-10-24 19:13:07,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:07,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:13:07,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:07,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:13:07,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:13:07,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 197 [2024-10-24 19:13:07,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 165 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2024-10-24 19:13:07,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:07,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 197 [2024-10-24 19:13:07,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:08,012 INFO L124 PetriNetUnfolderBase]: 950/3198 cut-off events. [2024-10-24 19:13:08,012 INFO L125 PetriNetUnfolderBase]: For 452/481 co-relation queries the response was YES. [2024-10-24 19:13:08,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5431 conditions, 3198 events. 950/3198 cut-off events. For 452/481 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 25582 event pairs, 701 based on Foata normal form. 71/2846 useless extension candidates. Maximal degree in co-relation 5386. Up to 1760 conditions per place. [2024-10-24 19:13:08,027 INFO L140 encePairwiseOnDemand]: 193/197 looper letters, 105 selfloop transitions, 4 changer transitions 0/196 dead transitions. [2024-10-24 19:13:08,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 196 transitions, 705 flow [2024-10-24 19:13:08,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:13:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:13:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 406 transitions. [2024-10-24 19:13:08,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6869712351945855 [2024-10-24 19:13:08,029 INFO L175 Difference]: Start difference. First operand has 165 places, 165 transitions, 412 flow. Second operand 3 states and 406 transitions. [2024-10-24 19:13:08,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 196 transitions, 705 flow [2024-10-24 19:13:08,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 196 transitions, 695 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:13:08,034 INFO L231 Difference]: Finished difference. Result has 163 places, 163 transitions, 406 flow [2024-10-24 19:13:08,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=406, PETRI_PLACES=163, PETRI_TRANSITIONS=163} [2024-10-24 19:13:08,037 INFO L277 CegarLoopForPetriNet]: 171 programPoint places, -8 predicate places. [2024-10-24 19:13:08,038 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 163 transitions, 406 flow [2024-10-24 19:13:08,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2024-10-24 19:13:08,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:08,038 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:13:08,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 19:13:08,039 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-10-24 19:13:08,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:08,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1569240998, now seen corresponding path program 1 times [2024-10-24 19:13:08,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:08,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723540974] [2024-10-24 19:13:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:08,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:08,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:08,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:08,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723540974] [2024-10-24 19:13:08,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723540974] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:13:08,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075981570] [2024-10-24 19:13:08,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:08,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:13:08,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:13:08,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:13:08,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 19:13:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:08,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:13:08,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:13:08,405 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 [2024-10-24 19:13:08,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:08,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:13:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:08,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075981570] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:13:08,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:13:08,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-24 19:13:08,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215541616] [2024-10-24 19:13:08,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:13:08,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 19:13:08,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:08,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 19:13:08,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-24 19:13:08,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 197 [2024-10-24 19:13:08,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 163 transitions, 406 flow. Second operand has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 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) [2024-10-24 19:13:08,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:08,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 197 [2024-10-24 19:13:08,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:09,504 INFO L124 PetriNetUnfolderBase]: 942/3170 cut-off events. [2024-10-24 19:13:09,504 INFO L125 PetriNetUnfolderBase]: For 296/325 co-relation queries the response was YES. [2024-10-24 19:13:09,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5288 conditions, 3170 events. 942/3170 cut-off events. For 296/325 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 25439 event pairs, 618 based on Foata normal form. 28/2797 useless extension candidates. Maximal degree in co-relation 5243. Up to 1630 conditions per place. [2024-10-24 19:13:09,516 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 124 selfloop transitions, 7 changer transitions 0/216 dead transitions. [2024-10-24 19:13:09,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 216 transitions, 786 flow [2024-10-24 19:13:09,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:13:09,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:13:09,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 733 transitions. [2024-10-24 19:13:09,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6201353637901861 [2024-10-24 19:13:09,519 INFO L175 Difference]: Start difference. First operand has 163 places, 163 transitions, 406 flow. Second operand 6 states and 733 transitions. [2024-10-24 19:13:09,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 216 transitions, 786 flow [2024-10-24 19:13:09,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 216 transitions, 774 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:13:09,523 INFO L231 Difference]: Finished difference. Result has 165 places, 162 transitions, 408 flow [2024-10-24 19:13:09,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=165, PETRI_TRANSITIONS=162} [2024-10-24 19:13:09,523 INFO L277 CegarLoopForPetriNet]: 171 programPoint places, -6 predicate places. [2024-10-24 19:13:09,524 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 162 transitions, 408 flow [2024-10-24 19:13:09,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 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) [2024-10-24 19:13:09,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:09,525 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:13:09,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 19:13:09,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:13:09,729 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-10-24 19:13:09,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:09,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1401831568, now seen corresponding path program 1 times [2024-10-24 19:13:09,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:09,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805810411] [2024-10-24 19:13:09,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:09,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 19:13:09,753 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 19:13:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 19:13:09,800 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 19:13:09,800 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 19:13:09,803 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (82 of 83 remaining) [2024-10-24 19:13:09,806 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 83 remaining) [2024-10-24 19:13:09,806 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 83 remaining) [2024-10-24 19:13:09,807 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 83 remaining) [2024-10-24 19:13:09,807 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 83 remaining) [2024-10-24 19:13:09,807 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 83 remaining) [2024-10-24 19:13:09,807 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 83 remaining) [2024-10-24 19:13:09,807 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 83 remaining) [2024-10-24 19:13:09,807 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 83 remaining) [2024-10-24 19:13:09,808 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 83 remaining) [2024-10-24 19:13:09,808 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 83 remaining) [2024-10-24 19:13:09,808 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 83 remaining) [2024-10-24 19:13:09,808 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 83 remaining) [2024-10-24 19:13:09,808 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 83 remaining) [2024-10-24 19:13:09,808 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 83 remaining) [2024-10-24 19:13:09,808 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 83 remaining) [2024-10-24 19:13:09,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 83 remaining) [2024-10-24 19:13:09,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 83 remaining) [2024-10-24 19:13:09,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 83 remaining) [2024-10-24 19:13:09,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 83 remaining) [2024-10-24 19:13:09,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 83 remaining) [2024-10-24 19:13:09,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 83 remaining) [2024-10-24 19:13:09,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 83 remaining) [2024-10-24 19:13:09,810 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 83 remaining) [2024-10-24 19:13:09,810 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 83 remaining) [2024-10-24 19:13:09,810 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 83 remaining) [2024-10-24 19:13:09,810 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 83 remaining) [2024-10-24 19:13:09,810 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 83 remaining) [2024-10-24 19:13:09,810 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 83 remaining) [2024-10-24 19:13:09,810 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK (53 of 83 remaining) [2024-10-24 19:13:09,810 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 83 remaining) [2024-10-24 19:13:09,810 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 83 remaining) [2024-10-24 19:13:09,810 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 83 remaining) [2024-10-24 19:13:09,811 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 83 remaining) [2024-10-24 19:13:09,811 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 83 remaining) [2024-10-24 19:13:09,811 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 83 remaining) [2024-10-24 19:13:09,811 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 83 remaining) [2024-10-24 19:13:09,811 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 83 remaining) [2024-10-24 19:13:09,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 83 remaining) [2024-10-24 19:13:09,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 83 remaining) [2024-10-24 19:13:09,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK (42 of 83 remaining) [2024-10-24 19:13:09,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 83 remaining) [2024-10-24 19:13:09,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 83 remaining) [2024-10-24 19:13:09,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 83 remaining) [2024-10-24 19:13:09,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 83 remaining) [2024-10-24 19:13:09,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 83 remaining) [2024-10-24 19:13:09,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 83 remaining) [2024-10-24 19:13:09,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 83 remaining) [2024-10-24 19:13:09,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 83 remaining) [2024-10-24 19:13:09,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 83 remaining) [2024-10-24 19:13:09,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 83 remaining) [2024-10-24 19:13:09,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 83 remaining) [2024-10-24 19:13:09,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 83 remaining) [2024-10-24 19:13:09,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 83 remaining) [2024-10-24 19:13:09,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 83 remaining) [2024-10-24 19:13:09,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 83 remaining) [2024-10-24 19:13:09,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 83 remaining) [2024-10-24 19:13:09,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 83 remaining) [2024-10-24 19:13:09,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 83 remaining) [2024-10-24 19:13:09,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 83 remaining) [2024-10-24 19:13:09,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 83 remaining) [2024-10-24 19:13:09,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr20ASSERT_VIOLATIONMEMORY_LEAK (21 of 83 remaining) [2024-10-24 19:13:09,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 83 remaining) [2024-10-24 19:13:09,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 83 remaining) [2024-10-24 19:13:09,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 83 remaining) [2024-10-24 19:13:09,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 83 remaining) [2024-10-24 19:13:09,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 83 remaining) [2024-10-24 19:13:09,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 83 remaining) [2024-10-24 19:13:09,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 83 remaining) [2024-10-24 19:13:09,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 83 remaining) [2024-10-24 19:13:09,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 83 remaining) [2024-10-24 19:13:09,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 83 remaining) [2024-10-24 19:13:09,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 83 remaining) [2024-10-24 19:13:09,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 83 remaining) [2024-10-24 19:13:09,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 83 remaining) [2024-10-24 19:13:09,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 83 remaining) [2024-10-24 19:13:09,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 83 remaining) [2024-10-24 19:13:09,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 83 remaining) [2024-10-24 19:13:09,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 83 remaining) [2024-10-24 19:13:09,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 83 remaining) [2024-10-24 19:13:09,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 83 remaining) [2024-10-24 19:13:09,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 83 remaining) [2024-10-24 19:13:09,822 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr20ASSERT_VIOLATIONMEMORY_LEAK (0 of 83 remaining) [2024-10-24 19:13:09,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 19:13:09,822 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:13:09,824 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 19:13:09,825 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 19:13:09,881 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 19:13:09,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 277 transitions, 570 flow [2024-10-24 19:13:09,932 INFO L124 PetriNetUnfolderBase]: 74/491 cut-off events. [2024-10-24 19:13:09,933 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-24 19:13:09,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 491 events. 74/491 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2808 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 300. Up to 12 conditions per place. [2024-10-24 19:13:09,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 277 transitions, 570 flow [2024-10-24 19:13:09,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 277 transitions, 570 flow [2024-10-24 19:13:09,943 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:13:09,944 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;@745c7d9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:13:09,944 INFO L334 AbstractCegarLoop]: Starting to check reachability of 104 error locations. [2024-10-24 19:13:09,945 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:13:09,945 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-10-24 19:13:09,945 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:13:09,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:09,946 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-10-24 19:13:09,946 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-10-24 19:13:09,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:09,946 INFO L85 PathProgramCache]: Analyzing trace with hash 32657, now seen corresponding path program 1 times [2024-10-24 19:13:09,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:09,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324498430] [2024-10-24 19:13:09,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:09,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:09,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:09,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324498430] [2024-10-24 19:13:09,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324498430] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:09,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:09,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:13:09,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772252970] [2024-10-24 19:13:09,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:09,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:13:09,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:09,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:13:09,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:13:10,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 277 [2024-10-24 19:13:10,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 277 transitions, 570 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2024-10-24 19:13:10,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:10,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 277 [2024-10-24 19:13:10,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:19,512 INFO L124 PetriNetUnfolderBase]: 51356/114752 cut-off events. [2024-10-24 19:13:19,512 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-10-24 19:13:19,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190506 conditions, 114752 events. 51356/114752 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 2261. Compared 1351521 event pairs, 45110 based on Foata normal form. 21797/123068 useless extension candidates. Maximal degree in co-relation 171288. Up to 71103 conditions per place. [2024-10-24 19:13:20,185 INFO L140 encePairwiseOnDemand]: 235/277 looper letters, 145 selfloop transitions, 2 changer transitions 0/286 dead transitions. [2024-10-24 19:13:20,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 286 transitions, 882 flow [2024-10-24 19:13:20,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:13:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:13:20,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2024-10-24 19:13:20,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7557160048134778 [2024-10-24 19:13:20,191 INFO L175 Difference]: Start difference. First operand has 239 places, 277 transitions, 570 flow. Second operand 3 states and 628 transitions. [2024-10-24 19:13:20,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 286 transitions, 882 flow [2024-10-24 19:13:20,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 286 transitions, 882 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 19:13:20,197 INFO L231 Difference]: Finished difference. Result has 235 places, 234 transitions, 488 flow [2024-10-24 19:13:20,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=235, PETRI_TRANSITIONS=234} [2024-10-24 19:13:20,199 INFO L277 CegarLoopForPetriNet]: 239 programPoint places, -4 predicate places. [2024-10-24 19:13:20,199 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 234 transitions, 488 flow [2024-10-24 19:13:20,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2024-10-24 19:13:20,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:20,200 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-10-24 19:13:20,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 19:13:20,200 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-10-24 19:13:20,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:20,200 INFO L85 PathProgramCache]: Analyzing trace with hash 32658, now seen corresponding path program 1 times [2024-10-24 19:13:20,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:20,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617792988] [2024-10-24 19:13:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:20,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:20,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:20,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617792988] [2024-10-24 19:13:20,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617792988] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:20,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:20,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:13:20,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823407445] [2024-10-24 19:13:20,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:20,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:13:20,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:20,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:13:20,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:13:20,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 277 [2024-10-24 19:13:20,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 234 transitions, 488 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2024-10-24 19:13:20,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:20,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 277 [2024-10-24 19:13:20,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:29,652 INFO L124 PetriNetUnfolderBase]: 52925/119063 cut-off events. [2024-10-24 19:13:29,653 INFO L125 PetriNetUnfolderBase]: For 751/751 co-relation queries the response was YES. [2024-10-24 19:13:29,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197803 conditions, 119063 events. 52925/119063 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 2364. Compared 1416272 event pairs, 49452 based on Foata normal form. 0/104309 useless extension candidates. Maximal degree in co-relation 186104. Up to 77809 conditions per place. [2024-10-24 19:13:30,263 INFO L140 encePairwiseOnDemand]: 273/277 looper letters, 94 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2024-10-24 19:13:30,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 232 transitions, 676 flow [2024-10-24 19:13:30,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:13:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:13:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2024-10-24 19:13:30,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6197352587244284 [2024-10-24 19:13:30,266 INFO L175 Difference]: Start difference. First operand has 235 places, 234 transitions, 488 flow. Second operand 3 states and 515 transitions. [2024-10-24 19:13:30,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 232 transitions, 676 flow [2024-10-24 19:13:30,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 232 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:13:30,318 INFO L231 Difference]: Finished difference. Result has 233 places, 232 transitions, 484 flow [2024-10-24 19:13:30,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=233, PETRI_TRANSITIONS=232} [2024-10-24 19:13:30,319 INFO L277 CegarLoopForPetriNet]: 239 programPoint places, -6 predicate places. [2024-10-24 19:13:30,320 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 232 transitions, 484 flow [2024-10-24 19:13:30,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2024-10-24 19:13:30,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:30,320 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-24 19:13:30,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 19:13:30,321 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-10-24 19:13:30,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:30,321 INFO L85 PathProgramCache]: Analyzing trace with hash 31419819, now seen corresponding path program 1 times [2024-10-24 19:13:30,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:30,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788328132] [2024-10-24 19:13:30,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:30,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:30,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:30,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:30,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788328132] [2024-10-24 19:13:30,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788328132] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:30,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:30,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:13:30,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780789229] [2024-10-24 19:13:30,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:30,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:13:30,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:30,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:13:30,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:13:30,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 277 [2024-10-24 19:13:30,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 232 transitions, 484 flow. Second operand has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 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) [2024-10-24 19:13:30,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:30,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 277 [2024-10-24 19:13:30,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:13:39,054 INFO L124 PetriNetUnfolderBase]: 52925/117701 cut-off events. [2024-10-24 19:13:39,054 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-10-24 19:13:39,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195659 conditions, 117701 events. 52925/117701 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 2280. Compared 1381723 event pairs, 33621 based on Foata normal form. 1/104855 useless extension candidates. Maximal degree in co-relation 195640. Up to 72689 conditions per place. [2024-10-24 19:13:39,822 INFO L140 encePairwiseOnDemand]: 264/277 looper letters, 170 selfloop transitions, 13 changer transitions 0/314 dead transitions. [2024-10-24 19:13:39,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 314 transitions, 1019 flow [2024-10-24 19:13:39,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:13:39,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:13:39,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1005 transitions. [2024-10-24 19:13:39,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6046931407942239 [2024-10-24 19:13:39,825 INFO L175 Difference]: Start difference. First operand has 233 places, 232 transitions, 484 flow. Second operand 6 states and 1005 transitions. [2024-10-24 19:13:39,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 314 transitions, 1019 flow [2024-10-24 19:13:39,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 314 transitions, 1015 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:13:39,831 INFO L231 Difference]: Finished difference. Result has 234 places, 235 transitions, 536 flow [2024-10-24 19:13:39,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=536, PETRI_PLACES=234, PETRI_TRANSITIONS=235} [2024-10-24 19:13:39,832 INFO L277 CegarLoopForPetriNet]: 239 programPoint places, -5 predicate places. [2024-10-24 19:13:39,832 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 235 transitions, 536 flow [2024-10-24 19:13:39,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 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) [2024-10-24 19:13:39,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:13:39,833 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-24 19:13:39,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 19:13:39,833 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-10-24 19:13:39,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:13:39,833 INFO L85 PathProgramCache]: Analyzing trace with hash 31419820, now seen corresponding path program 1 times [2024-10-24 19:13:39,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:13:39,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880813208] [2024-10-24 19:13:39,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:13:39,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:13:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:13:39,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:13:39,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:13:39,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880813208] [2024-10-24 19:13:39,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880813208] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:13:39,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:13:39,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:13:39,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264298583] [2024-10-24 19:13:39,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:13:39,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:13:39,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:13:39,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:13:39,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:13:40,182 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 277 [2024-10-24 19:13:40,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 235 transitions, 536 flow. Second operand has 5 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 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) [2024-10-24 19:13:40,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:13:40,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 277 [2024-10-24 19:13:40,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand