./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx --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 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:27:19,209 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:27:19,285 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:27:19,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:27:19,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:27:19,318 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:27:19,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:27:19,319 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:27:19,320 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:27:19,321 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:27:19,321 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:27:19,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:27:19,323 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:27:19,323 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:27:19,324 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:27:19,325 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:27:19,325 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:27:19,326 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:27:19,326 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:27:19,327 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:27:19,327 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:27:19,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:27:19,329 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:27:19,329 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:27:19,330 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:27:19,330 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:27:19,330 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:27:19,331 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:27:19,331 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:27:19,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:27:19,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:27:19,333 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:27:19,333 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:27:19,333 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:27:19,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:27:19,334 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:27:19,335 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:27:19,347 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:27:19,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:27:19,347 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 [2023-11-21 22:27:19,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:27:19,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:27:19,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:27:19,621 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:27:19,622 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:27:19,623 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2023-11-21 22:27:22,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:27:23,267 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:27:23,268 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2023-11-21 22:27:23,297 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/data/66bdeebbe/8732cdbeedcd4c3d8b86067543da677b/FLAG7f943ad00 [2023-11-21 22:27:23,318 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/data/66bdeebbe/8732cdbeedcd4c3d8b86067543da677b [2023-11-21 22:27:23,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:27:23,326 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:27:23,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:27:23,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:27:23,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:27:23,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:27:23" (1/1) ... [2023-11-21 22:27:23,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a5f1071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:23, skipping insertion in model container [2023-11-21 22:27:23,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:27:23" (1/1) ... [2023-11-21 22:27:23,413 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:27:23,680 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:27:24,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:27:24,051 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:27:24,069 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:27:24,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:27:24,185 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:27:24,186 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:27:24,186 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:27:24,194 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:27:24,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:24 WrapperNode [2023-11-21 22:27:24,195 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:27:24,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:27:24,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:27:24,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:27:24,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:24" (1/1) ... [2023-11-21 22:27:24,224 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:24" (1/1) ... [2023-11-21 22:27:24,249 INFO L138 Inliner]: procedures = 325, calls = 54, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2023-11-21 22:27:24,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:27:24,251 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:27:24,251 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:27:24,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:27:24,261 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:24" (1/1) ... [2023-11-21 22:27:24,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:24" (1/1) ... [2023-11-21 22:27:24,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:24" (1/1) ... [2023-11-21 22:27:24,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:24" (1/1) ... [2023-11-21 22:27:24,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:24" (1/1) ... [2023-11-21 22:27:24,278 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:24" (1/1) ... [2023-11-21 22:27:24,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:24" (1/1) ... [2023-11-21 22:27:24,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:24" (1/1) ... [2023-11-21 22:27:24,286 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:27:24,287 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:27:24,287 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:27:24,287 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:27:24,288 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:24" (1/1) ... [2023-11-21 22:27:24,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:27:24,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:24,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:24,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:27:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:27:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:27:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:27:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:27:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:27:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2023-11-21 22:27:24,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2023-11-21 22:27:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 22:27:24,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 22:27:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 22:27:24,377 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 22:27:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-21 22:27:24,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-21 22:27:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:27:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:27:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:27:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:27:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:27:24,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:27:24,380 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:27:24,549 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:27:24,554 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:27:24,991 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:27:25,161 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:27:25,161 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:27:25,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:25 BoogieIcfgContainer [2023-11-21 22:27:25,163 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:27:25,166 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:27:25,166 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:27:25,170 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:27:25,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:27:23" (1/3) ... [2023-11-21 22:27:25,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d738161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:27:25, skipping insertion in model container [2023-11-21 22:27:25,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:24" (2/3) ... [2023-11-21 22:27:25,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d738161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:27:25, skipping insertion in model container [2023-11-21 22:27:25,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:25" (3/3) ... [2023-11-21 22:27:25,174 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2023-11-21 22:27:25,197 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:27:25,197 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-11-21 22:27:25,197 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:27:25,346 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-11-21 22:27:25,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 162 transitions, 421 flow [2023-11-21 22:27:25,464 INFO L124 PetriNetUnfolderBase]: 8/107 cut-off events. [2023-11-21 22:27:25,465 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-21 22:27:25,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 107 events. 8/107 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 191 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 107. Up to 3 conditions per place. [2023-11-21 22:27:25,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 162 transitions, 421 flow [2023-11-21 22:27:25,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 106 transitions, 263 flow [2023-11-21 22:27:25,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:27:25,508 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56e1c651, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:27:25,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 73 error locations. [2023-11-21 22:27:25,511 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:27:25,511 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 22:27:25,512 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:27:25,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:25,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:27:25,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:25,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:25,520 INFO L85 PathProgramCache]: Analyzing trace with hash 10354, now seen corresponding path program 1 times [2023-11-21 22:27:25,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:25,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945712009] [2023-11-21 22:27:25,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:25,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:25,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:25,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945712009] [2023-11-21 22:27:25,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945712009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:25,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:25,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:27:25,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740301614] [2023-11-21 22:27:25,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:25,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:25,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:25,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:25,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:26,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 164 [2023-11-21 22:27:26,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 106 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:26,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:26,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 164 [2023-11-21 22:27:26,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:31,115 INFO L124 PetriNetUnfolderBase]: 17148/29861 cut-off events. [2023-11-21 22:27:31,116 INFO L125 PetriNetUnfolderBase]: For 1889/1895 co-relation queries the response was YES. [2023-11-21 22:27:31,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54093 conditions, 29861 events. 17148/29861 cut-off events. For 1889/1895 co-relation queries the response was YES. Maximal size of possible extension queue 2312. Compared 271559 event pairs, 16673 based on Foata normal form. 4/17162 useless extension candidates. Maximal degree in co-relation 54029. Up to 22324 conditions per place. [2023-11-21 22:27:31,467 INFO L140 encePairwiseOnDemand]: 156/164 looper letters, 56 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2023-11-21 22:27:31,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 110 transitions, 394 flow [2023-11-21 22:27:31,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:31,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2023-11-21 22:27:31,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6646341463414634 [2023-11-21 22:27:31,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2023-11-21 22:27:31,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2023-11-21 22:27:31,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:31,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2023-11-21 22:27:31,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:31,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:31,513 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:31,516 INFO L175 Difference]: Start difference. First operand has 117 places, 106 transitions, 263 flow. Second operand 3 states and 327 transitions. [2023-11-21 22:27:31,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 110 transitions, 394 flow [2023-11-21 22:27:31,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 110 transitions, 358 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-21 22:27:31,614 INFO L231 Difference]: Finished difference. Result has 107 places, 104 transitions, 247 flow [2023-11-21 22:27:31,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=107, PETRI_TRANSITIONS=104} [2023-11-21 22:27:31,623 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -10 predicate places. [2023-11-21 22:27:31,624 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 104 transitions, 247 flow [2023-11-21 22:27:31,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:31,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:31,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:27:31,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:27:31,626 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:31,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:31,627 INFO L85 PathProgramCache]: Analyzing trace with hash 10355, now seen corresponding path program 1 times [2023-11-21 22:27:31,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:31,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728382227] [2023-11-21 22:27:31,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:31,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:31,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:31,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728382227] [2023-11-21 22:27:31,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728382227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:31,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:31,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:27:31,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796236301] [2023-11-21 22:27:31,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:31,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:31,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:31,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:31,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:31,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 164 [2023-11-21 22:27:31,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 104 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:31,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:31,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 164 [2023-11-21 22:27:31,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:35,330 INFO L124 PetriNetUnfolderBase]: 17144/29850 cut-off events. [2023-11-21 22:27:35,331 INFO L125 PetriNetUnfolderBase]: For 480/485 co-relation queries the response was YES. [2023-11-21 22:27:35,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52670 conditions, 29850 events. 17144/29850 cut-off events. For 480/485 co-relation queries the response was YES. Maximal size of possible extension queue 2415. Compared 271993 event pairs, 14946 based on Foata normal form. 7/17156 useless extension candidates. Maximal degree in co-relation 52589. Up to 22315 conditions per place. [2023-11-21 22:27:35,556 INFO L140 encePairwiseOnDemand]: 160/164 looper letters, 51 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-11-21 22:27:35,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 355 flow [2023-11-21 22:27:35,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:35,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2023-11-21 22:27:35,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6524390243902439 [2023-11-21 22:27:35,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2023-11-21 22:27:35,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2023-11-21 22:27:35,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:35,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2023-11-21 22:27:35,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:35,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:35,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:35,570 INFO L175 Difference]: Start difference. First operand has 107 places, 104 transitions, 247 flow. Second operand 3 states and 321 transitions. [2023-11-21 22:27:35,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 355 flow [2023-11-21 22:27:35,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 105 transitions, 347 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:27:35,580 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 245 flow [2023-11-21 22:27:35,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=245, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2023-11-21 22:27:35,582 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -10 predicate places. [2023-11-21 22:27:35,583 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 245 flow [2023-11-21 22:27:35,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:35,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:35,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:27:35,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:27:35,585 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:35,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:35,601 INFO L85 PathProgramCache]: Analyzing trace with hash 308853602, now seen corresponding path program 1 times [2023-11-21 22:27:35,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:35,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039824077] [2023-11-21 22:27:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:35,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:35,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:35,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039824077] [2023-11-21 22:27:35,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039824077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:35,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:35,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:35,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108717806] [2023-11-21 22:27:35,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:35,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:35,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:35,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:35,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:35,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 164 [2023-11-21 22:27:35,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:35,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:35,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 164 [2023-11-21 22:27:35,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:38,195 INFO L124 PetriNetUnfolderBase]: 10864/19355 cut-off events. [2023-11-21 22:27:38,195 INFO L125 PetriNetUnfolderBase]: For 319/321 co-relation queries the response was YES. [2023-11-21 22:27:38,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34031 conditions, 19355 events. 10864/19355 cut-off events. For 319/321 co-relation queries the response was YES. Maximal size of possible extension queue 1739. Compared 171380 event pairs, 8821 based on Foata normal form. 0/10889 useless extension candidates. Maximal degree in co-relation 33956. Up to 14312 conditions per place. [2023-11-21 22:27:38,346 INFO L140 encePairwiseOnDemand]: 160/164 looper letters, 51 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-11-21 22:27:38,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 102 transitions, 349 flow [2023-11-21 22:27:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:38,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-11-21 22:27:38,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6402439024390244 [2023-11-21 22:27:38,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-11-21 22:27:38,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-11-21 22:27:38,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:38,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-11-21 22:27:38,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:38,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:38,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:38,353 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 245 flow. Second operand 3 states and 315 transitions. [2023-11-21 22:27:38,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 102 transitions, 349 flow [2023-11-21 22:27:38,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 102 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:27:38,359 INFO L231 Difference]: Finished difference. Result has 105 places, 101 transitions, 241 flow [2023-11-21 22:27:38,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=105, PETRI_TRANSITIONS=101} [2023-11-21 22:27:38,362 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -12 predicate places. [2023-11-21 22:27:38,362 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 101 transitions, 241 flow [2023-11-21 22:27:38,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:38,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:38,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:27:38,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:27:38,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:38,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:38,365 INFO L85 PathProgramCache]: Analyzing trace with hash 308853603, now seen corresponding path program 1 times [2023-11-21 22:27:38,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:38,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858095331] [2023-11-21 22:27:38,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:38,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:38,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:38,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858095331] [2023-11-21 22:27:38,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858095331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:38,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:38,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:38,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245717918] [2023-11-21 22:27:38,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:38,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:38,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:38,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:38,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:38,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 164 [2023-11-21 22:27:38,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 101 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:38,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:38,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 164 [2023-11-21 22:27:38,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:40,640 INFO L124 PetriNetUnfolderBase]: 10860/19348 cut-off events. [2023-11-21 22:27:40,640 INFO L125 PetriNetUnfolderBase]: For 321/324 co-relation queries the response was YES. [2023-11-21 22:27:40,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34013 conditions, 19348 events. 10860/19348 cut-off events. For 321/324 co-relation queries the response was YES. Maximal size of possible extension queue 1743. Compared 171500 event pairs, 10538 based on Foata normal form. 5/10887 useless extension candidates. Maximal degree in co-relation 33948. Up to 14315 conditions per place. [2023-11-21 22:27:40,781 INFO L140 encePairwiseOnDemand]: 160/164 looper letters, 51 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-11-21 22:27:40,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 102 transitions, 349 flow [2023-11-21 22:27:40,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:40,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:40,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2023-11-21 22:27:40,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6524390243902439 [2023-11-21 22:27:40,784 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2023-11-21 22:27:40,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2023-11-21 22:27:40,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:40,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2023-11-21 22:27:40,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:40,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:40,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:40,788 INFO L175 Difference]: Start difference. First operand has 105 places, 101 transitions, 241 flow. Second operand 3 states and 321 transitions. [2023-11-21 22:27:40,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 102 transitions, 349 flow [2023-11-21 22:27:40,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 102 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:27:40,792 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 243 flow [2023-11-21 22:27:40,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2023-11-21 22:27:40,793 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -12 predicate places. [2023-11-21 22:27:40,793 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 243 flow [2023-11-21 22:27:40,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:40,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:40,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:40,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:27:40,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:40,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:40,795 INFO L85 PathProgramCache]: Analyzing trace with hash -273228743, now seen corresponding path program 1 times [2023-11-21 22:27:40,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:40,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766793843] [2023-11-21 22:27:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:40,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:41,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:41,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766793843] [2023-11-21 22:27:41,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766793843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:41,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:41,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:27:41,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556146294] [2023-11-21 22:27:41,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:41,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:27:41,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:41,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:27:41,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:27:41,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 164 [2023-11-21 22:27:41,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:41,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:41,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 164 [2023-11-21 22:27:41,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:44,093 INFO L124 PetriNetUnfolderBase]: 17148/29854 cut-off events. [2023-11-21 22:27:44,093 INFO L125 PetriNetUnfolderBase]: For 3925/3931 co-relation queries the response was YES. [2023-11-21 22:27:44,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54424 conditions, 29854 events. 17148/29854 cut-off events. For 3925/3931 co-relation queries the response was YES. Maximal size of possible extension queue 2419. Compared 271940 event pairs, 13227 based on Foata normal form. 1721/18881 useless extension candidates. Maximal degree in co-relation 33937. Up to 22313 conditions per place. [2023-11-21 22:27:44,463 INFO L140 encePairwiseOnDemand]: 158/164 looper letters, 56 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2023-11-21 22:27:44,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 107 transitions, 382 flow [2023-11-21 22:27:44,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:27:44,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:27:44,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 479 transitions. [2023-11-21 22:27:44,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5841463414634146 [2023-11-21 22:27:44,466 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 479 transitions. [2023-11-21 22:27:44,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 479 transitions. [2023-11-21 22:27:44,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:44,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 479 transitions. [2023-11-21 22:27:44,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:44,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:44,472 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:44,472 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 243 flow. Second operand 5 states and 479 transitions. [2023-11-21 22:27:44,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 107 transitions, 382 flow [2023-11-21 22:27:44,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 107 transitions, 376 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 22:27:44,483 INFO L231 Difference]: Finished difference. Result has 105 places, 99 transitions, 245 flow [2023-11-21 22:27:44,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=245, PETRI_PLACES=105, PETRI_TRANSITIONS=99} [2023-11-21 22:27:44,486 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -12 predicate places. [2023-11-21 22:27:44,487 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 99 transitions, 245 flow [2023-11-21 22:27:44,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:44,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:44,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:44,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:27:44,489 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:44,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:44,490 INFO L85 PathProgramCache]: Analyzing trace with hash -273270938, now seen corresponding path program 1 times [2023-11-21 22:27:44,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:44,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848079991] [2023-11-21 22:27:44,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:44,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:44,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:44,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848079991] [2023-11-21 22:27:44,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848079991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:44,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:44,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:27:44,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315986020] [2023-11-21 22:27:44,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:44,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:27:44,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:44,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:27:44,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:27:44,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 164 [2023-11-21 22:27:44,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 99 transitions, 245 flow. Second operand has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:44,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:44,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 164 [2023-11-21 22:27:44,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:46,316 INFO L124 PetriNetUnfolderBase]: 10864/19348 cut-off events. [2023-11-21 22:27:46,316 INFO L125 PetriNetUnfolderBase]: For 326/328 co-relation queries the response was YES. [2023-11-21 22:27:46,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34023 conditions, 19348 events. 10864/19348 cut-off events. For 326/328 co-relation queries the response was YES. Maximal size of possible extension queue 1763. Compared 171672 event pairs, 8821 based on Foata normal form. 2/10885 useless extension candidates. Maximal degree in co-relation 33944. Up to 14312 conditions per place. [2023-11-21 22:27:46,490 INFO L140 encePairwiseOnDemand]: 161/164 looper letters, 51 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-11-21 22:27:46,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 99 transitions, 349 flow [2023-11-21 22:27:46,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-11-21 22:27:46,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6260162601626016 [2023-11-21 22:27:46,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-11-21 22:27:46,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-11-21 22:27:46,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:46,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-11-21 22:27:46,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-21 22:27:46,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:46,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:46,498 INFO L175 Difference]: Start difference. First operand has 105 places, 99 transitions, 245 flow. Second operand 3 states and 308 transitions. [2023-11-21 22:27:46,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 99 transitions, 349 flow [2023-11-21 22:27:46,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 99 transitions, 342 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 22:27:46,501 INFO L231 Difference]: Finished difference. Result has 103 places, 98 transitions, 238 flow [2023-11-21 22:27:46,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2023-11-21 22:27:46,504 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -14 predicate places. [2023-11-21 22:27:46,505 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 238 flow [2023-11-21 22:27:46,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:46,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:46,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:46,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:27:46,506 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:46,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:46,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2051096857, now seen corresponding path program 1 times [2023-11-21 22:27:46,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:46,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755633711] [2023-11-21 22:27:46,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:46,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:46,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:46,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755633711] [2023-11-21 22:27:46,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755633711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:46,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:46,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:46,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897815724] [2023-11-21 22:27:46,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:46,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:46,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:46,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:46,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:46,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 164 [2023-11-21 22:27:46,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:46,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:46,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 164 [2023-11-21 22:27:46,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:49,060 INFO L124 PetriNetUnfolderBase]: 15485/23463 cut-off events. [2023-11-21 22:27:49,060 INFO L125 PetriNetUnfolderBase]: For 129/131 co-relation queries the response was YES. [2023-11-21 22:27:49,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43999 conditions, 23463 events. 15485/23463 cut-off events. For 129/131 co-relation queries the response was YES. Maximal size of possible extension queue 1706. Compared 169702 event pairs, 12819 based on Foata normal form. 0/14890 useless extension candidates. Maximal degree in co-relation 43920. Up to 20179 conditions per place. [2023-11-21 22:27:49,191 INFO L140 encePairwiseOnDemand]: 160/164 looper letters, 51 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2023-11-21 22:27:49,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 97 transitions, 342 flow [2023-11-21 22:27:49,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-11-21 22:27:49,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6402439024390244 [2023-11-21 22:27:49,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-11-21 22:27:49,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-11-21 22:27:49,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:49,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-11-21 22:27:49,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:49,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:49,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:49,198 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 238 flow. Second operand 3 states and 315 transitions. [2023-11-21 22:27:49,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 97 transitions, 342 flow [2023-11-21 22:27:49,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 97 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:27:49,201 INFO L231 Difference]: Finished difference. Result has 101 places, 96 transitions, 234 flow [2023-11-21 22:27:49,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=101, PETRI_TRANSITIONS=96} [2023-11-21 22:27:49,202 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -16 predicate places. [2023-11-21 22:27:49,202 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 96 transitions, 234 flow [2023-11-21 22:27:49,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:49,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:49,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:49,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:27:49,203 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread0Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:49,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:49,203 INFO L85 PathProgramCache]: Analyzing trace with hash -2091314706, now seen corresponding path program 1 times [2023-11-21 22:27:49,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:49,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018332954] [2023-11-21 22:27:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:49,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:49,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:49,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:49,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018332954] [2023-11-21 22:27:49,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018332954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:49,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:49,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:27:49,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331599440] [2023-11-21 22:27:49,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:49,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:27:49,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:49,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:27:49,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:27:49,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 164 [2023-11-21 22:27:49,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 96 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:49,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:49,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 164 [2023-11-21 22:27:49,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:50,940 INFO L124 PetriNetUnfolderBase]: 10859/17337 cut-off events. [2023-11-21 22:27:50,940 INFO L125 PetriNetUnfolderBase]: For 328/332 co-relation queries the response was YES. [2023-11-21 22:27:50,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31995 conditions, 17337 events. 10859/17337 cut-off events. For 328/332 co-relation queries the response was YES. Maximal size of possible extension queue 1245. Compared 129713 event pairs, 8819 based on Foata normal form. 1252/12128 useless extension candidates. Maximal degree in co-relation 31916. Up to 14301 conditions per place. [2023-11-21 22:27:51,040 INFO L140 encePairwiseOnDemand]: 160/164 looper letters, 49 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-11-21 22:27:51,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 95 transitions, 334 flow [2023-11-21 22:27:51,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:51,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2023-11-21 22:27:51,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6483739837398373 [2023-11-21 22:27:51,042 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2023-11-21 22:27:51,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2023-11-21 22:27:51,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:51,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2023-11-21 22:27:51,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:51,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:51,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:51,046 INFO L175 Difference]: Start difference. First operand has 101 places, 96 transitions, 234 flow. Second operand 3 states and 319 transitions. [2023-11-21 22:27:51,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 95 transitions, 334 flow [2023-11-21 22:27:51,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 95 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:27:51,049 INFO L231 Difference]: Finished difference. Result has 99 places, 94 transitions, 230 flow [2023-11-21 22:27:51,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=99, PETRI_TRANSITIONS=94} [2023-11-21 22:27:51,050 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -18 predicate places. [2023-11-21 22:27:51,050 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 94 transitions, 230 flow [2023-11-21 22:27:51,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:51,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:51,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:51,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:27:51,051 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:51,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:51,051 INFO L85 PathProgramCache]: Analyzing trace with hash 439563373, now seen corresponding path program 1 times [2023-11-21 22:27:51,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:51,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112988202] [2023-11-21 22:27:51,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:51,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:51,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:51,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112988202] [2023-11-21 22:27:51,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112988202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:51,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:51,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:51,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866623735] [2023-11-21 22:27:51,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:51,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:51,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:51,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:51,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:51,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 164 [2023-11-21 22:27:51,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 94 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:51,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:51,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 164 [2023-11-21 22:27:51,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:52,641 INFO L124 PetriNetUnfolderBase]: 11597/17967 cut-off events. [2023-11-21 22:27:52,642 INFO L125 PetriNetUnfolderBase]: For 288/290 co-relation queries the response was YES. [2023-11-21 22:27:52,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33623 conditions, 17967 events. 11597/17967 cut-off events. For 288/290 co-relation queries the response was YES. Maximal size of possible extension queue 1253. Compared 129511 event pairs, 9427 based on Foata normal form. 0/11556 useless extension candidates. Maximal degree in co-relation 33544. Up to 15299 conditions per place. [2023-11-21 22:27:52,726 INFO L140 encePairwiseOnDemand]: 160/164 looper letters, 51 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-11-21 22:27:52,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 93 transitions, 334 flow [2023-11-21 22:27:52,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:52,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:52,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-11-21 22:27:52,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6402439024390244 [2023-11-21 22:27:52,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-11-21 22:27:52,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-11-21 22:27:52,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:52,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-11-21 22:27:52,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:52,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:52,732 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:52,732 INFO L175 Difference]: Start difference. First operand has 99 places, 94 transitions, 230 flow. Second operand 3 states and 315 transitions. [2023-11-21 22:27:52,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 93 transitions, 334 flow [2023-11-21 22:27:52,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 93 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:27:52,735 INFO L231 Difference]: Finished difference. Result has 97 places, 92 transitions, 226 flow [2023-11-21 22:27:52,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=97, PETRI_TRANSITIONS=92} [2023-11-21 22:27:52,736 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -20 predicate places. [2023-11-21 22:27:52,736 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 92 transitions, 226 flow [2023-11-21 22:27:52,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:52,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:52,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:52,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:27:52,737 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread0Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:52,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:52,738 INFO L85 PathProgramCache]: Analyzing trace with hash 439563374, now seen corresponding path program 1 times [2023-11-21 22:27:52,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:52,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392050044] [2023-11-21 22:27:52,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:52,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:52,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:52,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392050044] [2023-11-21 22:27:52,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392050044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:52,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:52,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:27:52,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908594007] [2023-11-21 22:27:52,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:52,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:27:52,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:52,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:27:52,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:27:53,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 164 [2023-11-21 22:27:53,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 92 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:53,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:53,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 164 [2023-11-21 22:27:53,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:54,438 INFO L124 PetriNetUnfolderBase]: 10859/16921 cut-off events. [2023-11-21 22:27:54,438 INFO L125 PetriNetUnfolderBase]: For 329/333 co-relation queries the response was YES. [2023-11-21 22:27:54,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31579 conditions, 16921 events. 10859/16921 cut-off events. For 329/333 co-relation queries the response was YES. Maximal size of possible extension queue 1243. Compared 122721 event pairs, 8819 based on Foata normal form. 210/11086 useless extension candidates. Maximal degree in co-relation 31500. Up to 14301 conditions per place. [2023-11-21 22:27:54,527 INFO L140 encePairwiseOnDemand]: 160/164 looper letters, 49 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2023-11-21 22:27:54,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 91 transitions, 326 flow [2023-11-21 22:27:54,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:54,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2023-11-21 22:27:54,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6483739837398373 [2023-11-21 22:27:54,529 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2023-11-21 22:27:54,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2023-11-21 22:27:54,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:54,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2023-11-21 22:27:54,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:54,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:54,533 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:54,533 INFO L175 Difference]: Start difference. First operand has 97 places, 92 transitions, 226 flow. Second operand 3 states and 319 transitions. [2023-11-21 22:27:54,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 91 transitions, 326 flow [2023-11-21 22:27:54,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 91 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:27:54,536 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 222 flow [2023-11-21 22:27:54,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2023-11-21 22:27:54,537 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -22 predicate places. [2023-11-21 22:27:54,537 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 222 flow [2023-11-21 22:27:54,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:54,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:54,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:54,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:27:54,539 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:54,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:54,539 INFO L85 PathProgramCache]: Analyzing trace with hash 439564716, now seen corresponding path program 1 times [2023-11-21 22:27:54,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:54,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044036430] [2023-11-21 22:27:54,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:54,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:54,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:54,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044036430] [2023-11-21 22:27:54,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044036430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:54,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:54,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:54,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069177045] [2023-11-21 22:27:54,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:54,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:54,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:54,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:54,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:54,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 164 [2023-11-21 22:27:54,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:54,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:54,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 164 [2023-11-21 22:27:54,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:55,414 INFO L124 PetriNetUnfolderBase]: 4538/7317 cut-off events. [2023-11-21 22:27:55,415 INFO L125 PetriNetUnfolderBase]: For 186/190 co-relation queries the response was YES. [2023-11-21 22:27:55,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13614 conditions, 7317 events. 4538/7317 cut-off events. For 186/190 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 47616 event pairs, 3592 based on Foata normal form. 2/5397 useless extension candidates. Maximal degree in co-relation 13531. Up to 6077 conditions per place. [2023-11-21 22:27:55,461 INFO L140 encePairwiseOnDemand]: 155/164 looper letters, 44 selfloop transitions, 5 changer transitions 0/87 dead transitions. [2023-11-21 22:27:55,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 87 transitions, 314 flow [2023-11-21 22:27:55,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:55,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2023-11-21 22:27:55,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6504065040650406 [2023-11-21 22:27:55,464 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2023-11-21 22:27:55,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2023-11-21 22:27:55,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:55,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2023-11-21 22:27:55,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:55,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:55,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:55,468 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 222 flow. Second operand 3 states and 320 transitions. [2023-11-21 22:27:55,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 87 transitions, 314 flow [2023-11-21 22:27:55,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 87 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:27:55,471 INFO L231 Difference]: Finished difference. Result has 90 places, 85 transitions, 218 flow [2023-11-21 22:27:55,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=90, PETRI_TRANSITIONS=85} [2023-11-21 22:27:55,473 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -27 predicate places. [2023-11-21 22:27:55,473 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 85 transitions, 218 flow [2023-11-21 22:27:55,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:55,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:55,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:55,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:27:55,474 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:55,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:55,474 INFO L85 PathProgramCache]: Analyzing trace with hash 439564717, now seen corresponding path program 1 times [2023-11-21 22:27:55,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:55,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32481805] [2023-11-21 22:27:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:55,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:55,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:55,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:55,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32481805] [2023-11-21 22:27:55,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32481805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:55,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:55,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:55,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853838560] [2023-11-21 22:27:55,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:55,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:55,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:55,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:55,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:55,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 164 [2023-11-21 22:27:55,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 85 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:55,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:55,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 164 [2023-11-21 22:27:55,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:55,924 INFO L124 PetriNetUnfolderBase]: 1487/2547 cut-off events. [2023-11-21 22:27:55,925 INFO L125 PetriNetUnfolderBase]: For 103/107 co-relation queries the response was YES. [2023-11-21 22:27:55,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4735 conditions, 2547 events. 1487/2547 cut-off events. For 103/107 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13683 event pairs, 1115 based on Foata normal form. 4/2290 useless extension candidates. Maximal degree in co-relation 4658. Up to 2064 conditions per place. [2023-11-21 22:27:55,938 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 43 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-11-21 22:27:55,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 81 transitions, 298 flow [2023-11-21 22:27:55,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:55,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:55,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2023-11-21 22:27:55,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6422764227642277 [2023-11-21 22:27:55,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2023-11-21 22:27:55,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2023-11-21 22:27:55,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:55,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2023-11-21 22:27:55,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:55,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:55,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:55,944 INFO L175 Difference]: Start difference. First operand has 90 places, 85 transitions, 218 flow. Second operand 3 states and 316 transitions. [2023-11-21 22:27:55,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 81 transitions, 298 flow [2023-11-21 22:27:55,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 81 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:27:55,947 INFO L231 Difference]: Finished difference. Result has 84 places, 79 transitions, 198 flow [2023-11-21 22:27:55,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2023-11-21 22:27:55,948 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -33 predicate places. [2023-11-21 22:27:55,948 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 198 flow [2023-11-21 22:27:55,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:55,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:55,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:55,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:27:55,949 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:55,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:55,949 INFO L85 PathProgramCache]: Analyzing trace with hash 672306057, now seen corresponding path program 1 times [2023-11-21 22:27:55,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:55,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140178486] [2023-11-21 22:27:55,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:55,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:56,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:56,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:56,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140178486] [2023-11-21 22:27:56,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140178486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:56,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:56,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:56,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125205071] [2023-11-21 22:27:56,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:56,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:56,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:56,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:56,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:56,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 164 [2023-11-21 22:27:56,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:56,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:56,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 164 [2023-11-21 22:27:56,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:56,414 INFO L124 PetriNetUnfolderBase]: 1553/2615 cut-off events. [2023-11-21 22:27:56,414 INFO L125 PetriNetUnfolderBase]: For 88/90 co-relation queries the response was YES. [2023-11-21 22:27:56,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4898 conditions, 2615 events. 1553/2615 cut-off events. For 88/90 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13866 event pairs, 1163 based on Foata normal form. 0/2394 useless extension candidates. Maximal degree in co-relation 4828. Up to 2159 conditions per place. [2023-11-21 22:27:56,429 INFO L140 encePairwiseOnDemand]: 160/164 looper letters, 43 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-11-21 22:27:56,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 78 transitions, 286 flow [2023-11-21 22:27:56,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:56,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-11-21 22:27:56,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6239837398373984 [2023-11-21 22:27:56,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-11-21 22:27:56,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-11-21 22:27:56,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:56,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-11-21 22:27:56,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:56,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:56,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:56,435 INFO L175 Difference]: Start difference. First operand has 84 places, 79 transitions, 198 flow. Second operand 3 states and 307 transitions. [2023-11-21 22:27:56,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 78 transitions, 286 flow [2023-11-21 22:27:56,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 78 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:27:56,438 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 197 flow [2023-11-21 22:27:56,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2023-11-21 22:27:56,440 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -34 predicate places. [2023-11-21 22:27:56,440 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 197 flow [2023-11-21 22:27:56,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:56,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:56,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:56,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 22:27:56,441 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread0Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:56,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:56,441 INFO L85 PathProgramCache]: Analyzing trace with hash -322434544, now seen corresponding path program 1 times [2023-11-21 22:27:56,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:56,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106712465] [2023-11-21 22:27:56,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:56,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:56,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:56,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:56,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106712465] [2023-11-21 22:27:56,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106712465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:56,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:56,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:27:56,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039425809] [2023-11-21 22:27:56,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:56,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:27:56,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:56,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:27:56,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:27:56,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 164 [2023-11-21 22:27:56,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:56,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:56,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 164 [2023-11-21 22:27:56,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:57,037 INFO L124 PetriNetUnfolderBase]: 1487/2499 cut-off events. [2023-11-21 22:27:57,037 INFO L125 PetriNetUnfolderBase]: For 97/101 co-relation queries the response was YES. [2023-11-21 22:27:57,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4685 conditions, 2499 events. 1487/2499 cut-off events. For 97/101 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13212 event pairs, 1115 based on Foata normal form. 30/2316 useless extension candidates. Maximal degree in co-relation 4612. Up to 2057 conditions per place. [2023-11-21 22:27:57,047 INFO L140 encePairwiseOnDemand]: 160/164 looper letters, 41 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-11-21 22:27:57,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 76 transitions, 281 flow [2023-11-21 22:27:57,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:57,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:57,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2023-11-21 22:27:57,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6321138211382114 [2023-11-21 22:27:57,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2023-11-21 22:27:57,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2023-11-21 22:27:57,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:57,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2023-11-21 22:27:57,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-21 22:27:57,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:57,053 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:57,053 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 197 flow. Second operand 3 states and 311 transitions. [2023-11-21 22:27:57,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 76 transitions, 281 flow [2023-11-21 22:27:57,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 76 transitions, 277 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:27:57,056 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 193 flow [2023-11-21 22:27:57,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2023-11-21 22:27:57,057 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -36 predicate places. [2023-11-21 22:27:57,057 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 193 flow [2023-11-21 22:27:57,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:57,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:57,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:57,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 22:27:57,058 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:57,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:57,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2100248240, now seen corresponding path program 1 times [2023-11-21 22:27:57,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:57,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904890151] [2023-11-21 22:27:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:57,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:57,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:57,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904890151] [2023-11-21 22:27:57,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904890151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:57,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:57,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:27:57,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061196635] [2023-11-21 22:27:57,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:57,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:27:57,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:57,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:27:57,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:27:57,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 164 [2023-11-21 22:27:57,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:57,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:57,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 164 [2023-11-21 22:27:57,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:57,590 INFO L124 PetriNetUnfolderBase]: 1487/2459 cut-off events. [2023-11-21 22:27:57,590 INFO L125 PetriNetUnfolderBase]: For 97/101 co-relation queries the response was YES. [2023-11-21 22:27:57,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4645 conditions, 2459 events. 1487/2459 cut-off events. For 97/101 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 12741 event pairs, 1115 based on Foata normal form. 58/2344 useless extension candidates. Maximal degree in co-relation 4572. Up to 2057 conditions per place. [2023-11-21 22:27:57,599 INFO L140 encePairwiseOnDemand]: 160/164 looper letters, 41 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-11-21 22:27:57,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 74 transitions, 277 flow [2023-11-21 22:27:57,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:57,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2023-11-21 22:27:57,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6321138211382114 [2023-11-21 22:27:57,601 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2023-11-21 22:27:57,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2023-11-21 22:27:57,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:57,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2023-11-21 22:27:57,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-21 22:27:57,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:57,605 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:57,605 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 193 flow. Second operand 3 states and 311 transitions. [2023-11-21 22:27:57,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 74 transitions, 277 flow [2023-11-21 22:27:57,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 273 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:27:57,608 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 189 flow [2023-11-21 22:27:57,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2023-11-21 22:27:57,609 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -38 predicate places. [2023-11-21 22:27:57,609 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 189 flow [2023-11-21 22:27:57,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:57,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:57,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:57,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 22:27:57,610 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:57,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:57,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2100248241, now seen corresponding path program 1 times [2023-11-21 22:27:57,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:57,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889384390] [2023-11-21 22:27:57,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:57,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:57,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:57,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889384390] [2023-11-21 22:27:57,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889384390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:57,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:57,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:57,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781493866] [2023-11-21 22:27:57,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:57,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:57,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:57,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:57,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:57,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 164 [2023-11-21 22:27:57,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:57,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:57,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 164 [2023-11-21 22:27:57,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:58,073 INFO L124 PetriNetUnfolderBase]: 1629/2581 cut-off events. [2023-11-21 22:27:58,073 INFO L125 PetriNetUnfolderBase]: For 95/97 co-relation queries the response was YES. [2023-11-21 22:27:58,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4969 conditions, 2581 events. 1629/2581 cut-off events. For 95/97 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12810 event pairs, 1227 based on Foata normal form. 0/2446 useless extension candidates. Maximal degree in co-relation 4896. Up to 2259 conditions per place. [2023-11-21 22:27:58,083 INFO L140 encePairwiseOnDemand]: 160/164 looper letters, 43 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-11-21 22:27:58,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 72 transitions, 277 flow [2023-11-21 22:27:58,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:58,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:27:58,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-11-21 22:27:58,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6239837398373984 [2023-11-21 22:27:58,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-11-21 22:27:58,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-11-21 22:27:58,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:58,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-11-21 22:27:58,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:58,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:58,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:58,089 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 189 flow. Second operand 3 states and 307 transitions. [2023-11-21 22:27:58,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 72 transitions, 277 flow [2023-11-21 22:27:58,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 273 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:27:58,092 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 185 flow [2023-11-21 22:27:58,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-11-21 22:27:58,093 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -40 predicate places. [2023-11-21 22:27:58,093 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 185 flow [2023-11-21 22:27:58,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:58,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:58,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:58,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 22:27:58,094 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:58,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:58,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1840134273, now seen corresponding path program 1 times [2023-11-21 22:27:58,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:58,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877313601] [2023-11-21 22:27:58,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:58,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:58,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:58,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877313601] [2023-11-21 22:27:58,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877313601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:58,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:58,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:27:58,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951512086] [2023-11-21 22:27:58,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:58,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:27:58,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:58,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:27:58,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:27:59,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 164 [2023-11-21 22:27:59,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 185 flow. Second operand has 8 states, 8 states have (on average 89.0) internal successors, (712), 8 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:59,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:27:59,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 164 [2023-11-21 22:27:59,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:27:59,557 INFO L124 PetriNetUnfolderBase]: 2372/3752 cut-off events. [2023-11-21 22:27:59,557 INFO L125 PetriNetUnfolderBase]: For 427/433 co-relation queries the response was YES. [2023-11-21 22:27:59,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7445 conditions, 3752 events. 2372/3752 cut-off events. For 427/433 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 20045 event pairs, 1669 based on Foata normal form. 4/3557 useless extension candidates. Maximal degree in co-relation 4533. Up to 3214 conditions per place. [2023-11-21 22:27:59,582 INFO L140 encePairwiseOnDemand]: 158/164 looper letters, 45 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2023-11-21 22:27:59,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 75 transitions, 297 flow [2023-11-21 22:27:59,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:27:59,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:27:59,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 475 transitions. [2023-11-21 22:27:59,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5792682926829268 [2023-11-21 22:27:59,586 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 475 transitions. [2023-11-21 22:27:59,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 475 transitions. [2023-11-21 22:27:59,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:59,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 475 transitions. [2023-11-21 22:27:59,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:59,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:59,593 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:59,593 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 185 flow. Second operand 5 states and 475 transitions. [2023-11-21 22:27:59,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 75 transitions, 297 flow [2023-11-21 22:27:59,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 75 transitions, 287 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-21 22:27:59,597 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 183 flow [2023-11-21 22:27:59,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2023-11-21 22:27:59,598 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -40 predicate places. [2023-11-21 22:27:59,598 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 183 flow [2023-11-21 22:27:59,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.0) internal successors, (712), 8 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:27:59,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:27:59,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:59,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-21 22:27:59,600 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:27:59,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:59,601 INFO L85 PathProgramCache]: Analyzing trace with hash 973902833, now seen corresponding path program 1 times [2023-11-21 22:27:59,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:59,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80902208] [2023-11-21 22:27:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:59,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:28:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:28:00,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:28:00,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80902208] [2023-11-21 22:28:00,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80902208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:28:00,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:28:00,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:28:00,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124833134] [2023-11-21 22:28:00,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:28:00,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:28:00,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:28:00,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:28:00,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:28:00,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 164 [2023-11-21 22:28:00,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:00,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:28:00,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 164 [2023-11-21 22:28:00,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:28:01,100 INFO L124 PetriNetUnfolderBase]: 1487/2416 cut-off events. [2023-11-21 22:28:01,100 INFO L125 PetriNetUnfolderBase]: For 101/105 co-relation queries the response was YES. [2023-11-21 22:28:01,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4602 conditions, 2416 events. 1487/2416 cut-off events. For 101/105 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12252 event pairs, 1112 based on Foata normal form. 2/2285 useless extension candidates. Maximal degree in co-relation 4536. Up to 2048 conditions per place. [2023-11-21 22:28:01,116 INFO L140 encePairwiseOnDemand]: 159/164 looper letters, 41 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2023-11-21 22:28:01,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 73 transitions, 281 flow [2023-11-21 22:28:01,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:28:01,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:28:01,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 481 transitions. [2023-11-21 22:28:01,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865853658536585 [2023-11-21 22:28:01,119 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 481 transitions. [2023-11-21 22:28:01,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 481 transitions. [2023-11-21 22:28:01,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:28:01,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 481 transitions. [2023-11-21 22:28:01,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:01,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:01,125 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:01,125 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 183 flow. Second operand 5 states and 481 transitions. [2023-11-21 22:28:01,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 73 transitions, 281 flow [2023-11-21 22:28:01,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 73 transitions, 269 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 22:28:01,129 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 179 flow [2023-11-21 22:28:01,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2023-11-21 22:28:01,130 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -41 predicate places. [2023-11-21 22:28:01,130 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 179 flow [2023-11-21 22:28:01,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:28:01,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:28:01,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:01,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-21 22:28:01,132 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 70 more)] === [2023-11-21 22:28:01,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:01,132 INFO L85 PathProgramCache]: Analyzing trace with hash 990812728, now seen corresponding path program 1 times [2023-11-21 22:28:01,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:01,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326541535] [2023-11-21 22:28:01,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:01,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:01,222 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:28:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:01,374 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:28:01,375 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:28:01,377 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (72 of 73 remaining) [2023-11-21 22:28:01,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 73 remaining) [2023-11-21 22:28:01,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 73 remaining) [2023-11-21 22:28:01,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 73 remaining) [2023-11-21 22:28:01,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 73 remaining) [2023-11-21 22:28:01,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 73 remaining) [2023-11-21 22:28:01,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 73 remaining) [2023-11-21 22:28:01,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 73 remaining) [2023-11-21 22:28:01,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 73 remaining) [2023-11-21 22:28:01,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 73 remaining) [2023-11-21 22:28:01,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 73 remaining) [2023-11-21 22:28:01,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 73 remaining) [2023-11-21 22:28:01,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 73 remaining) [2023-11-21 22:28:01,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 73 remaining) [2023-11-21 22:28:01,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 73 remaining) [2023-11-21 22:28:01,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 73 remaining) [2023-11-21 22:28:01,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 73 remaining) [2023-11-21 22:28:01,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 73 remaining) [2023-11-21 22:28:01,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 73 remaining) [2023-11-21 22:28:01,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 73 remaining) [2023-11-21 22:28:01,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 73 remaining) [2023-11-21 22:28:01,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (51 of 73 remaining) [2023-11-21 22:28:01,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (50 of 73 remaining) [2023-11-21 22:28:01,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (49 of 73 remaining) [2023-11-21 22:28:01,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 73 remaining) [2023-11-21 22:28:01,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (47 of 73 remaining) [2023-11-21 22:28:01,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 73 remaining) [2023-11-21 22:28:01,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 73 remaining) [2023-11-21 22:28:01,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 73 remaining) [2023-11-21 22:28:01,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 73 remaining) [2023-11-21 22:28:01,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 73 remaining) [2023-11-21 22:28:01,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 73 remaining) [2023-11-21 22:28:01,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 73 remaining) [2023-11-21 22:28:01,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 73 remaining) [2023-11-21 22:28:01,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 73 remaining) [2023-11-21 22:28:01,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 73 remaining) [2023-11-21 22:28:01,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 73 remaining) [2023-11-21 22:28:01,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 73 remaining) [2023-11-21 22:28:01,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (34 of 73 remaining) [2023-11-21 22:28:01,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 73 remaining) [2023-11-21 22:28:01,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 73 remaining) [2023-11-21 22:28:01,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 73 remaining) [2023-11-21 22:28:01,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 73 remaining) [2023-11-21 22:28:01,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 73 remaining) [2023-11-21 22:28:01,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 73 remaining) [2023-11-21 22:28:01,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 73 remaining) [2023-11-21 22:28:01,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 73 remaining) [2023-11-21 22:28:01,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 73 remaining) [2023-11-21 22:28:01,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 73 remaining) [2023-11-21 22:28:01,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 73 remaining) [2023-11-21 22:28:01,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 73 remaining) [2023-11-21 22:28:01,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 73 remaining) [2023-11-21 22:28:01,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 73 remaining) [2023-11-21 22:28:01,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 73 remaining) [2023-11-21 22:28:01,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 73 remaining) [2023-11-21 22:28:01,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 73 remaining) [2023-11-21 22:28:01,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 73 remaining) [2023-11-21 22:28:01,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 73 remaining) [2023-11-21 22:28:01,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 73 remaining) [2023-11-21 22:28:01,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 73 remaining) [2023-11-21 22:28:01,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 73 remaining) [2023-11-21 22:28:01,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 73 remaining) [2023-11-21 22:28:01,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 73 remaining) [2023-11-21 22:28:01,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 73 remaining) [2023-11-21 22:28:01,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 73 remaining) [2023-11-21 22:28:01,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 73 remaining) [2023-11-21 22:28:01,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 73 remaining) [2023-11-21 22:28:01,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 73 remaining) [2023-11-21 22:28:01,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 73 remaining) [2023-11-21 22:28:01,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 73 remaining) [2023-11-21 22:28:01,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 73 remaining) [2023-11-21 22:28:01,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 73 remaining) [2023-11-21 22:28:01,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 73 remaining) [2023-11-21 22:28:01,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-21 22:28:01,397 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:28:01,406 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 22:28:01,406 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:28:01,530 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre20 could not be translated [2023-11-21 22:28:01,532 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem22 could not be translated [2023-11-21 22:28:01,532 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-21 22:28:01,533 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated [2023-11-21 22:28:01,534 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated [2023-11-21 22:28:01,536 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-21 22:28:01,537 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-21 22:28:01,543 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-21 22:28:01,545 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-21 22:28:01,547 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated [2023-11-21 22:28:01,548 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated [2023-11-21 22:28:01,553 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated [2023-11-21 22:28:01,556 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated [2023-11-21 22:28:01,556 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated [2023-11-21 22:28:01,557 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated [2023-11-21 22:28:01,558 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem17 could not be translated [2023-11-21 22:28:01,559 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem17 could not be translated [2023-11-21 22:28:01,562 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem18 could not be translated [2023-11-21 22:28:01,563 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem18 could not be translated [2023-11-21 22:28:01,563 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem19 could not be translated [2023-11-21 22:28:01,564 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem19 could not be translated [2023-11-21 22:28:01,565 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem22 could not be translated [2023-11-21 22:28:01,565 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short25 could not be translated [2023-11-21 22:28:01,566 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem23 could not be translated [2023-11-21 22:28:01,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:28:01 BasicIcfg [2023-11-21 22:28:01,583 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:28:01,584 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:28:01,584 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:28:01,584 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:28:01,585 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:25" (3/4) ... [2023-11-21 22:28:01,587 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 22:28:01,588 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:28:01,589 INFO L158 Benchmark]: Toolchain (without parser) took 38262.80ms. Allocated memory was 161.5MB in the beginning and 11.1GB in the end (delta: 10.9GB). Free memory was 130.4MB in the beginning and 9.0GB in the end (delta: -8.9GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2023-11-21 22:28:01,590 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 93.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:28:01,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 867.41ms. Allocated memory is still 161.5MB. Free memory was 129.8MB in the beginning and 96.3MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-21 22:28:01,590 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.32ms. Allocated memory is still 161.5MB. Free memory was 96.2MB in the beginning and 93.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:28:01,591 INFO L158 Benchmark]: Boogie Preprocessor took 35.58ms. Allocated memory is still 161.5MB. Free memory was 93.5MB in the beginning and 92.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:28:01,591 INFO L158 Benchmark]: RCFGBuilder took 876.35ms. Allocated memory is still 161.5MB. Free memory was 92.1MB in the beginning and 109.1MB in the end (delta: -17.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 22:28:01,592 INFO L158 Benchmark]: TraceAbstraction took 36417.40ms. Allocated memory was 161.5MB in the beginning and 11.1GB in the end (delta: 10.9GB). Free memory was 108.0MB in the beginning and 9.0GB in the end (delta: -8.9GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2023-11-21 22:28:01,592 INFO L158 Benchmark]: Witness Printer took 4.62ms. Allocated memory is still 11.1GB. Free memory is still 9.0GB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:28:01,598 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 93.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 867.41ms. Allocated memory is still 161.5MB. Free memory was 129.8MB in the beginning and 96.3MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.32ms. Allocated memory is still 161.5MB. Free memory was 96.2MB in the beginning and 93.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.58ms. Allocated memory is still 161.5MB. Free memory was 93.5MB in the beginning and 92.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 876.35ms. Allocated memory is still 161.5MB. Free memory was 92.1MB in the beginning and 109.1MB in the end (delta: -17.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 36417.40ms. Allocated memory was 161.5MB in the beginning and 11.1GB in the end (delta: 10.9GB). Free memory was 108.0MB in the beginning and 9.0GB in the end (delta: -8.9GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. * Witness Printer took 4.62ms. Allocated memory is still 11.1GB. Free memory is still 9.0GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre20 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem22 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem17 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem17 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem18 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem18 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem19 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem19 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem22 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short25 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem23 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1159]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1159. Possible FailurePath: [L1124] 0 char *v; [L1161] 0 pthread_t t; [L1162] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [arg={0:0}, t={6:0}, v={0:0}] [L1163] 0 \read(t) VAL [arg={0:0}, t={6:0}, v={0:0}] [L1146] 1 pthread_t t1, t2, t3, t4, t5; [L1147] FCALL, FORK 1 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={0:0}] [L1127] 2 v = malloc(sizeof(char)) [L1128] 2 return 0; [L1148] 1 \read(t1) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1148] FCALL, JOIN 2 pthread_join(t1, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1149] FCALL, FORK 1 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1133] 3 v[0] = 'X' VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1150] FCALL, FORK 1 pthread_create(&t3, 0, thread3, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1140] 4 v[0] = 'Y' VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1135] 3 return 0; [L1151] FCALL, FORK 1 pthread_create(&t4, 0, thread2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1133] 5 v[0] = 'X' VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1142] 4 return 0; [L1152] FCALL, FORK 1 pthread_create(&t5, 0, thread2, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1133] 6 v[0] = 'X' VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1135] 5 return 0; [L1153] 1 \read(t2) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1153] FCALL, JOIN 3 pthread_join(t2, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1154] 1 \read(t3) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1154] FCALL, JOIN 4 pthread_join(t3, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1155] 1 \read(t4) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1155] FCALL, JOIN 5 pthread_join(t4, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1135] 6 return 0; [L1156] 1 \read(t5) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1156] FCALL, JOIN 6 pthread_join(t5, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1163] FCALL, JOIN 1 pthread_join(t, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t={6:0}, v={3:0}] [L1164] EXPR 0 v[0] [L1164] EXPR 0 v[0] == 'X' || v[0] == 'Y' VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t={6:0}, v={3:0}] [L1164] CALL 0 __VERIFIER_assert(v[0] == 'X' || v[0] == 'Y') [L1123] COND FALSE 0 !(!expression) VAL [\old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=1, v={3:0}] [L1164] RET 0 __VERIFIER_assert(v[0] == 'X' || v[0] == 'Y') [L1165] 0 return 0; [L1165] 0 return 0; VAL [\result=0, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, v={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1162]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 183 locations, 73 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 36.0s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 30.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4013 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2369 mSDsluCounter, 402 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 169 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4162 IncrementalHoareTripleChecker+Invalid, 4237 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 233 mSDtfsCounter, 4162 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=263occurred in iteration=0, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 352 NumberOfCodeBlocks, 352 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 277 ConstructedInterpolants, 0 QuantifiedInterpolants, 3516 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 22:28:01,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx --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 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:28:04,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:28:04,617 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 22:28:04,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:28:04,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:28:04,674 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:28:04,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:28:04,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:28:04,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:28:04,681 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:28:04,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:28:04,683 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:28:04,683 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:28:04,685 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:28:04,686 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:28:04,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:28:04,686 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:28:04,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:28:04,687 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:28:04,688 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:28:04,689 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:28:04,690 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:28:04,690 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:28:04,690 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:28:04,691 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:28:04,691 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:28:04,692 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:28:04,692 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:28:04,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:28:04,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:28:04,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:28:04,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:28:04,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:28:04,696 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:28:04,696 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:28:04,696 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:28:04,697 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:28:04,697 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:28:04,697 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:28:04,698 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:28:04,698 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:28:04,699 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:28:04,699 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 [2023-11-21 22:28:05,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:28:05,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:28:05,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:28:05,151 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:28:05,152 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:28:05,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49a5168-c860-4c23-9665-69434555247d/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i