./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya --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 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:48:23,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:48:23,338 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 02:48:23,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:48:23,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:48:23,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:48:23,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:48:23,366 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:48:23,366 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:48:23,367 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:48:23,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:48:23,368 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:48:23,369 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:48:23,369 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:48:23,370 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:48:23,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:48:23,371 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:48:23,371 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:48:23,372 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:48:23,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:48:23,373 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 02:48:23,373 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 02:48:23,374 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 02:48:23,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:48:23,375 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 02:48:23,375 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:48:23,375 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:48:23,376 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:48:23,376 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:48:23,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:48:23,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:48:23,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:48:23,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:48:23,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:48:23,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:48:23,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:48:23,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:48:23,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:48:23,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:48:23,379 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:48:23,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:48:23,380 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_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 [2023-11-29 02:48:23,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:48:23,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:48:23,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:48:23,597 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:48:23,597 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:48:23,599 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-11-29 02:48:26,338 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:48:26,574 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:48:26,574 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/sv-benchmarks/c/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-11-29 02:48:26,590 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya/data/1587a9376/23ad6732b4a746369f8145862a2a55d1/FLAG7c0548b9c [2023-11-29 02:48:26,908 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya/data/1587a9376/23ad6732b4a746369f8145862a2a55d1 [2023-11-29 02:48:26,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:48:26,911 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:48:26,912 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:48:26,912 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:48:26,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:48:26,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:48:26" (1/1) ... [2023-11-29 02:48:26,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8ed0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:48:26, skipping insertion in model container [2023-11-29 02:48:26,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:48:26" (1/1) ... [2023-11-29 02:48:26,967 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:48:27,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:48:27,260 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:48:27,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:48:27,345 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:48:27,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:48:27 WrapperNode [2023-11-29 02:48:27,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:48:27,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:48:27,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:48:27,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:48:27,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:48:27" (1/1) ... [2023-11-29 02:48:27,368 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:48:27" (1/1) ... [2023-11-29 02:48:27,393 INFO L138 Inliner]: procedures = 164, calls = 65, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 133 [2023-11-29 02:48:27,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:48:27,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:48:27,394 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:48:27,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:48:27,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:48:27" (1/1) ... [2023-11-29 02:48:27,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:48:27" (1/1) ... [2023-11-29 02:48:27,410 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:48:27" (1/1) ... [2023-11-29 02:48:27,427 INFO L175 MemorySlicer]: Split 21 memory accesses to 6 slices as follows [2, 2, 5, 5, 5, 2]. 24 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 5, 5, 5, 0]. The 2 writes are split as follows [0, 1, 0, 0, 0, 1]. [2023-11-29 02:48:27,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:48:27" (1/1) ... [2023-11-29 02:48:27,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:48:27" (1/1) ... [2023-11-29 02:48:27,437 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:48:27" (1/1) ... [2023-11-29 02:48:27,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:48:27" (1/1) ... [2023-11-29 02:48:27,442 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:48:27" (1/1) ... [2023-11-29 02:48:27,444 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:48:27" (1/1) ... [2023-11-29 02:48:27,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:48:27,449 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:48:27,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:48:27,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:48:27,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:48:27" (1/1) ... [2023-11-29 02:48:27,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:48:27,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:48:27,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:48:27,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:48:27,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 02:48:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 02:48:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 02:48:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 02:48:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 02:48:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 02:48:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-29 02:48:27,513 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-29 02:48:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 02:48:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 02:48:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 02:48:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 02:48:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 02:48:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 02:48:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 02:48:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:48:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:48:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 02:48:27,514 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 02:48:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:48:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:48:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:48:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:48:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 02:48:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 02:48:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 02:48:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 02:48:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:48:27,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:48:27,518 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 02:48:27,672 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:48:27,675 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:48:27,952 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:48:28,130 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:48:28,130 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 02:48:28,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:48:28 BoogieIcfgContainer [2023-11-29 02:48:28,131 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:48:28,133 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:48:28,133 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:48:28,137 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:48:28,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:48:26" (1/3) ... [2023-11-29 02:48:28,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aeeb7d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:48:28, skipping insertion in model container [2023-11-29 02:48:28,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:48:27" (2/3) ... [2023-11-29 02:48:28,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aeeb7d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:48:28, skipping insertion in model container [2023-11-29 02:48:28,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:48:28" (3/3) ... [2023-11-29 02:48:28,139 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2023-11-29 02:48:28,154 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:48:28,155 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-29 02:48:28,155 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 02:48:28,196 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 02:48:28,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 107 transitions, 228 flow [2023-11-29 02:48:28,264 INFO L124 PetriNetUnfolderBase]: 8/105 cut-off events. [2023-11-29 02:48:28,264 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 02:48:28,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 105 events. 8/105 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 153 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-29 02:48:28,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 107 transitions, 228 flow [2023-11-29 02:48:28,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 104 transitions, 220 flow [2023-11-29 02:48:28,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:48:28,286 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;@2c39bb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:48:28,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-29 02:48:28,289 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 02:48:28,290 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 02:48:28,290 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 02:48:28,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:48:28,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 02:48:28,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-29 02:48:28,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:48:28,295 INFO L85 PathProgramCache]: Analyzing trace with hash 15392, now seen corresponding path program 1 times [2023-11-29 02:48:28,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:48:28,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193662530] [2023-11-29 02:48:28,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:48:28,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:48:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:48:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:48:28,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:48:28,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193662530] [2023-11-29 02:48:28,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193662530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:48:28,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:48:28,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 02:48:28,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359649405] [2023-11-29 02:48:28,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:48:28,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:48:28,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:48:28,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:48:28,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:48:28,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2023-11-29 02:48:28,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 104 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2023-11-29 02:48:28,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:48:28,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2023-11-29 02:48:28,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:48:29,891 INFO L124 PetriNetUnfolderBase]: 4788/9444 cut-off events. [2023-11-29 02:48:29,891 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-29 02:48:29,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17003 conditions, 9444 events. 4788/9444 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 70042 event pairs, 4788 based on Foata normal form. 790/10142 useless extension candidates. Maximal degree in co-relation 16896. Up to 7521 conditions per place. [2023-11-29 02:48:29,975 INFO L140 encePairwiseOnDemand]: 95/107 looper letters, 50 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-11-29 02:48:29,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 296 flow [2023-11-29 02:48:29,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:48:29,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:48:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2023-11-29 02:48:29,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5669781931464174 [2023-11-29 02:48:29,989 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 182 transitions. [2023-11-29 02:48:29,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 182 transitions. [2023-11-29 02:48:29,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:48:29,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 182 transitions. [2023-11-29 02:48:29,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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) [2023-11-29 02:48:30,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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) [2023-11-29 02:48:30,000 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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) [2023-11-29 02:48:30,002 INFO L175 Difference]: Start difference. First operand has 103 places, 104 transitions, 220 flow. Second operand 3 states and 182 transitions. [2023-11-29 02:48:30,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 296 flow [2023-11-29 02:48:30,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 288 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 02:48:30,012 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 188 flow [2023-11-29 02:48:30,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=184, 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=188, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2023-11-29 02:48:30,017 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -8 predicate places. [2023-11-29 02:48:30,017 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 188 flow [2023-11-29 02:48:30,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2023-11-29 02:48:30,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:48:30,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 02:48:30,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:48:30,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-29 02:48:30,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:48:30,019 INFO L85 PathProgramCache]: Analyzing trace with hash 15393, now seen corresponding path program 1 times [2023-11-29 02:48:30,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:48:30,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528007096] [2023-11-29 02:48:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:48:30,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:48:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:48:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:48:30,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:48:30,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528007096] [2023-11-29 02:48:30,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528007096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:48:30,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:48:30,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 02:48:30,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094833569] [2023-11-29 02:48:30,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:48:30,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:48:30,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:48:30,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:48:30,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:48:30,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 107 [2023-11-29 02:48:30,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2023-11-29 02:48:30,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:48:30,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 107 [2023-11-29 02:48:30,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:48:31,213 INFO L124 PetriNetUnfolderBase]: 4608/9163 cut-off events. [2023-11-29 02:48:31,213 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-29 02:48:31,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16420 conditions, 9163 events. 4608/9163 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 68193 event pairs, 4608 based on Foata normal form. 101/9172 useless extension candidates. Maximal degree in co-relation 16410. Up to 7240 conditions per place. [2023-11-29 02:48:31,267 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 48 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-11-29 02:48:31,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 284 flow [2023-11-29 02:48:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:48:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:48:31,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2023-11-29 02:48:31,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5545171339563862 [2023-11-29 02:48:31,269 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 178 transitions. [2023-11-29 02:48:31,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 178 transitions. [2023-11-29 02:48:31,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:48:31,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 178 transitions. [2023-11-29 02:48:31,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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) [2023-11-29 02:48:31,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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) [2023-11-29 02:48:31,273 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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) [2023-11-29 02:48:31,273 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 188 flow. Second operand 3 states and 178 transitions. [2023-11-29 02:48:31,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 284 flow [2023-11-29 02:48:31,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 88 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:48:31,276 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 184 flow [2023-11-29 02:48:31,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2023-11-29 02:48:31,277 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -10 predicate places. [2023-11-29 02:48:31,277 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 184 flow [2023-11-29 02:48:31,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2023-11-29 02:48:31,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:48:31,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 02:48:31,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:48:31,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-29 02:48:31,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:48:31,279 INFO L85 PathProgramCache]: Analyzing trace with hash 459064573, now seen corresponding path program 1 times [2023-11-29 02:48:31,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:48:31,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944005002] [2023-11-29 02:48:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:48:31,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:48:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:48:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:48:31,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:48:31,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944005002] [2023-11-29 02:48:31,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944005002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:48:31,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:48:31,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 02:48:31,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402257811] [2023-11-29 02:48:31,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:48:31,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:48:31,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:48:31,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:48:31,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:48:31,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2023-11-29 02:48:31,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2023-11-29 02:48:31,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:48:31,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2023-11-29 02:48:31,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:48:32,229 INFO L124 PetriNetUnfolderBase]: 4626/9177 cut-off events. [2023-11-29 02:48:32,229 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 02:48:32,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16472 conditions, 9177 events. 4626/9177 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 68216 event pairs, 4626 based on Foata normal form. 0/9111 useless extension candidates. Maximal degree in co-relation 16462. Up to 7278 conditions per place. [2023-11-29 02:48:32,276 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 50 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-11-29 02:48:32,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 86 transitions, 284 flow [2023-11-29 02:48:32,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:48:32,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:48:32,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2023-11-29 02:48:32,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5420560747663551 [2023-11-29 02:48:32,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2023-11-29 02:48:32,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2023-11-29 02:48:32,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:48:32,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2023-11-29 02:48:32,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2023-11-29 02:48:32,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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) [2023-11-29 02:48:32,283 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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) [2023-11-29 02:48:32,283 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 184 flow. Second operand 3 states and 174 transitions. [2023-11-29 02:48:32,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 86 transitions, 284 flow [2023-11-29 02:48:32,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 86 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:48:32,286 INFO L231 Difference]: Finished difference. Result has 91 places, 86 transitions, 180 flow [2023-11-29 02:48:32,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=91, PETRI_TRANSITIONS=86} [2023-11-29 02:48:32,288 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -12 predicate places. [2023-11-29 02:48:32,288 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 86 transitions, 180 flow [2023-11-29 02:48:32,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2023-11-29 02:48:32,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:48:32,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 02:48:32,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:48:32,289 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-29 02:48:32,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:48:32,289 INFO L85 PathProgramCache]: Analyzing trace with hash 459064574, now seen corresponding path program 1 times [2023-11-29 02:48:32,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:48:32,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689124055] [2023-11-29 02:48:32,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:48:32,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:48:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:48:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:48:32,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:48:32,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689124055] [2023-11-29 02:48:32,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689124055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:48:32,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:48:32,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 02:48:32,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534345144] [2023-11-29 02:48:32,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:48:32,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:48:32,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:48:32,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:48:32,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:48:32,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 107 [2023-11-29 02:48:32,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2023-11-29 02:48:32,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:48:32,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 107 [2023-11-29 02:48:32,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:48:33,178 INFO L124 PetriNetUnfolderBase]: 4608/9137 cut-off events. [2023-11-29 02:48:33,178 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-29 02:48:33,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16394 conditions, 9137 events. 4608/9137 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 67950 event pairs, 4608 based on Foata normal form. 20/9091 useless extension candidates. Maximal degree in co-relation 16384. Up to 7240 conditions per place. [2023-11-29 02:48:33,207 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 48 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-29 02:48:33,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 84 transitions, 276 flow [2023-11-29 02:48:33,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:48:33,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:48:33,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2023-11-29 02:48:33,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5545171339563862 [2023-11-29 02:48:33,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 178 transitions. [2023-11-29 02:48:33,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 178 transitions. [2023-11-29 02:48:33,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:48:33,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 178 transitions. [2023-11-29 02:48:33,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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) [2023-11-29 02:48:33,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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) [2023-11-29 02:48:33,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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) [2023-11-29 02:48:33,212 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 180 flow. Second operand 3 states and 178 transitions. [2023-11-29 02:48:33,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 84 transitions, 276 flow [2023-11-29 02:48:33,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 84 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:48:33,215 INFO L231 Difference]: Finished difference. Result has 89 places, 84 transitions, 176 flow [2023-11-29 02:48:33,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=89, PETRI_TRANSITIONS=84} [2023-11-29 02:48:33,217 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -14 predicate places. [2023-11-29 02:48:33,217 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 84 transitions, 176 flow [2023-11-29 02:48:33,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2023-11-29 02:48:33,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:48:33,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:48:33,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:48:33,218 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-29 02:48:33,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:48:33,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1758963368, now seen corresponding path program 1 times [2023-11-29 02:48:33,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:48:33,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948907186] [2023-11-29 02:48:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:48:33,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:48:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:48:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:48:33,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:48:33,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948907186] [2023-11-29 02:48:33,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948907186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:48:33,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:48:33,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:48:33,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857765902] [2023-11-29 02:48:33,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:48:33,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:48:33,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:48:33,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:48:33,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:48:33,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2023-11-29 02:48:33,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 84 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2023-11-29 02:48:33,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:48:33,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2023-11-29 02:48:33,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:48:34,140 INFO L124 PetriNetUnfolderBase]: 5526/9920 cut-off events. [2023-11-29 02:48:34,141 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 02:48:34,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18615 conditions, 9920 events. 5526/9920 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 70616 event pairs, 1275 based on Foata normal form. 0/9599 useless extension candidates. Maximal degree in co-relation 18605. Up to 5198 conditions per place. [2023-11-29 02:48:34,177 INFO L140 encePairwiseOnDemand]: 91/107 looper letters, 102 selfloop transitions, 19 changer transitions 0/151 dead transitions. [2023-11-29 02:48:34,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 151 transitions, 553 flow [2023-11-29 02:48:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:48:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:48:34,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 327 transitions. [2023-11-29 02:48:34,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.611214953271028 [2023-11-29 02:48:34,180 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 327 transitions. [2023-11-29 02:48:34,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 327 transitions. [2023-11-29 02:48:34,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:48:34,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 327 transitions. [2023-11-29 02:48:34,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 65.4) internal successors, (327), 5 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) [2023-11-29 02:48:34,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-11-29 02:48:34,185 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-11-29 02:48:34,185 INFO L175 Difference]: Start difference. First operand has 89 places, 84 transitions, 176 flow. Second operand 5 states and 327 transitions. [2023-11-29 02:48:34,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 151 transitions, 553 flow [2023-11-29 02:48:34,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 151 transitions, 549 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:48:34,190 INFO L231 Difference]: Finished difference. Result has 95 places, 96 transitions, 296 flow [2023-11-29 02:48:34,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=95, PETRI_TRANSITIONS=96} [2023-11-29 02:48:34,191 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -8 predicate places. [2023-11-29 02:48:34,191 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 96 transitions, 296 flow [2023-11-29 02:48:34,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2023-11-29 02:48:34,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:48:34,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:48:34,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:48:34,192 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-29 02:48:34,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:48:34,192 INFO L85 PathProgramCache]: Analyzing trace with hash -943295389, now seen corresponding path program 1 times [2023-11-29 02:48:34,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:48:34,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179463375] [2023-11-29 02:48:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:48:34,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:48:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:48:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:48:34,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:48:34,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179463375] [2023-11-29 02:48:34,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179463375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:48:34,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:48:34,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:48:34,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147356858] [2023-11-29 02:48:34,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:48:34,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:48:34,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:48:34,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:48:34,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:48:34,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2023-11-29 02:48:34,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 96 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 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) [2023-11-29 02:48:34,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:48:34,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2023-11-29 02:48:34,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:48:35,091 INFO L124 PetriNetUnfolderBase]: 2893/6186 cut-off events. [2023-11-29 02:48:35,092 INFO L125 PetriNetUnfolderBase]: For 1521/1629 co-relation queries the response was YES. [2023-11-29 02:48:35,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13051 conditions, 6186 events. 2893/6186 cut-off events. For 1521/1629 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 45695 event pairs, 781 based on Foata normal form. 220/6392 useless extension candidates. Maximal degree in co-relation 8523. Up to 3317 conditions per place. [2023-11-29 02:48:35,124 INFO L140 encePairwiseOnDemand]: 100/107 looper letters, 102 selfloop transitions, 7 changer transitions 0/147 dead transitions. [2023-11-29 02:48:35,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 147 transitions, 687 flow [2023-11-29 02:48:35,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:48:35,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:48:35,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 271 transitions. [2023-11-29 02:48:35,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.633177570093458 [2023-11-29 02:48:35,126 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 271 transitions. [2023-11-29 02:48:35,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 271 transitions. [2023-11-29 02:48:35,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:48:35,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 271 transitions. [2023-11-29 02:48:35,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.75) internal successors, (271), 4 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) [2023-11-29 02:48:35,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 02:48:35,131 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 02:48:35,131 INFO L175 Difference]: Start difference. First operand has 95 places, 96 transitions, 296 flow. Second operand 4 states and 271 transitions. [2023-11-29 02:48:35,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 147 transitions, 687 flow [2023-11-29 02:48:35,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 147 transitions, 687 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 02:48:35,158 INFO L231 Difference]: Finished difference. Result has 99 places, 100 transitions, 332 flow [2023-11-29 02:48:35,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=332, PETRI_PLACES=99, PETRI_TRANSITIONS=100} [2023-11-29 02:48:35,160 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -4 predicate places. [2023-11-29 02:48:35,160 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 100 transitions, 332 flow [2023-11-29 02:48:35,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 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) [2023-11-29 02:48:35,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:48:35,161 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] [2023-11-29 02:48:35,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:48:35,161 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-29 02:48:35,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:48:35,162 INFO L85 PathProgramCache]: Analyzing trace with hash 2024720930, now seen corresponding path program 1 times [2023-11-29 02:48:35,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:48:35,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790862759] [2023-11-29 02:48:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:48:35,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:48:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:48:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:48:35,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:48:35,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790862759] [2023-11-29 02:48:35,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790862759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:48:35,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:48:35,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:48:35,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404993729] [2023-11-29 02:48:35,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:48:35,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:48:35,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:48:35,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:48:35,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:48:35,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2023-11-29 02:48:35,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 100 transitions, 332 flow. Second operand has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 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) [2023-11-29 02:48:35,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:48:35,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2023-11-29 02:48:35,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:48:36,006 INFO L124 PetriNetUnfolderBase]: 3323/6515 cut-off events. [2023-11-29 02:48:36,006 INFO L125 PetriNetUnfolderBase]: For 2382/2382 co-relation queries the response was YES. [2023-11-29 02:48:36,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15294 conditions, 6515 events. 3323/6515 cut-off events. For 2382/2382 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 45318 event pairs, 1615 based on Foata normal form. 100/6600 useless extension candidates. Maximal degree in co-relation 9853. Up to 3062 conditions per place. [2023-11-29 02:48:36,030 INFO L140 encePairwiseOnDemand]: 90/107 looper letters, 114 selfloop transitions, 32 changer transitions 0/176 dead transitions. [2023-11-29 02:48:36,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 176 transitions, 877 flow [2023-11-29 02:48:36,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:48:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:48:36,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 370 transitions. [2023-11-29 02:48:36,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763239875389408 [2023-11-29 02:48:36,033 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 370 transitions. [2023-11-29 02:48:36,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 370 transitions. [2023-11-29 02:48:36,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:48:36,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 370 transitions. [2023-11-29 02:48:36,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.666666666666664) internal successors, (370), 6 states have internal predecessors, (370), 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) [2023-11-29 02:48:36,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2023-11-29 02:48:36,035 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2023-11-29 02:48:36,035 INFO L175 Difference]: Start difference. First operand has 99 places, 100 transitions, 332 flow. Second operand 6 states and 370 transitions. [2023-11-29 02:48:36,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 176 transitions, 877 flow [2023-11-29 02:48:36,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 176 transitions, 876 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:48:36,054 INFO L231 Difference]: Finished difference. Result has 105 places, 115 transitions, 536 flow [2023-11-29 02:48:36,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=536, PETRI_PLACES=105, PETRI_TRANSITIONS=115} [2023-11-29 02:48:36,055 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 2 predicate places. [2023-11-29 02:48:36,055 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 115 transitions, 536 flow [2023-11-29 02:48:36,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 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) [2023-11-29 02:48:36,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:48:36,055 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] [2023-11-29 02:48:36,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:48:36,056 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-29 02:48:36,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:48:36,056 INFO L85 PathProgramCache]: Analyzing trace with hash -750259950, now seen corresponding path program 1 times [2023-11-29 02:48:36,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:48:36,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322521272] [2023-11-29 02:48:36,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:48:36,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:48:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:48:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:48:36,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:48:36,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322521272] [2023-11-29 02:48:36,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322521272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:48:36,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:48:36,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:48:36,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008391560] [2023-11-29 02:48:36,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:48:36,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:48:36,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:48:36,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:48:36,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:48:36,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2023-11-29 02:48:36,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 115 transitions, 536 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2023-11-29 02:48:36,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:48:36,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2023-11-29 02:48:36,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:48:36,899 INFO L124 PetriNetUnfolderBase]: 3359/6516 cut-off events. [2023-11-29 02:48:36,899 INFO L125 PetriNetUnfolderBase]: For 6240/6240 co-relation queries the response was YES. [2023-11-29 02:48:36,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17334 conditions, 6516 events. 3359/6516 cut-off events. For 6240/6240 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45513 event pairs, 834 based on Foata normal form. 44/6550 useless extension candidates. Maximal degree in co-relation 9862. Up to 3764 conditions per place. [2023-11-29 02:48:36,924 INFO L140 encePairwiseOnDemand]: 95/107 looper letters, 126 selfloop transitions, 48 changer transitions 0/204 dead transitions. [2023-11-29 02:48:36,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 204 transitions, 1349 flow [2023-11-29 02:48:36,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:48:36,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:48:36,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 320 transitions. [2023-11-29 02:48:36,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5981308411214953 [2023-11-29 02:48:36,926 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 320 transitions. [2023-11-29 02:48:36,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 320 transitions. [2023-11-29 02:48:36,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:48:36,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 320 transitions. [2023-11-29 02:48:36,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 64.0) internal successors, (320), 5 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) [2023-11-29 02:48:36,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-11-29 02:48:36,930 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-11-29 02:48:36,930 INFO L175 Difference]: Start difference. First operand has 105 places, 115 transitions, 536 flow. Second operand 5 states and 320 transitions. [2023-11-29 02:48:36,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 204 transitions, 1349 flow [2023-11-29 02:48:36,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 204 transitions, 1311 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-29 02:48:36,952 INFO L231 Difference]: Finished difference. Result has 111 places, 137 transitions, 887 flow [2023-11-29 02:48:36,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=887, PETRI_PLACES=111, PETRI_TRANSITIONS=137} [2023-11-29 02:48:36,953 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 8 predicate places. [2023-11-29 02:48:36,953 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 137 transitions, 887 flow [2023-11-29 02:48:36,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2023-11-29 02:48:36,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:48:36,954 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] [2023-11-29 02:48:36,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:48:36,954 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-29 02:48:36,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:48:36,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1804268235, now seen corresponding path program 1 times [2023-11-29 02:48:36,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:48:36,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003036057] [2023-11-29 02:48:36,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:48:36,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:48:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:48:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:48:37,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:48:37,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003036057] [2023-11-29 02:48:37,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003036057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:48:37,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:48:37,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:48:37,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144351748] [2023-11-29 02:48:37,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:48:37,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:48:37,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:48:37,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:48:37,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:48:37,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2023-11-29 02:48:37,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 137 transitions, 887 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:48:37,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:48:37,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2023-11-29 02:48:37,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:48:37,651 INFO L124 PetriNetUnfolderBase]: 1798/4037 cut-off events. [2023-11-29 02:48:37,651 INFO L125 PetriNetUnfolderBase]: For 4503/4547 co-relation queries the response was YES. [2023-11-29 02:48:37,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11675 conditions, 4037 events. 1798/4037 cut-off events. For 4503/4547 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 28156 event pairs, 577 based on Foata normal form. 407/4374 useless extension candidates. Maximal degree in co-relation 8530. Up to 1812 conditions per place. [2023-11-29 02:48:37,668 INFO L140 encePairwiseOnDemand]: 88/107 looper letters, 97 selfloop transitions, 21 changer transitions 0/169 dead transitions. [2023-11-29 02:48:37,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 169 transitions, 1246 flow [2023-11-29 02:48:37,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:48:37,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:48:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2023-11-29 02:48:37,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285046728971962 [2023-11-29 02:48:37,670 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 269 transitions. [2023-11-29 02:48:37,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 269 transitions. [2023-11-29 02:48:37,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:48:37,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 269 transitions. [2023-11-29 02:48:37,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.25) internal successors, (269), 4 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) [2023-11-29 02:48:37,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 02:48:37,672 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 02:48:37,672 INFO L175 Difference]: Start difference. First operand has 111 places, 137 transitions, 887 flow. Second operand 4 states and 269 transitions. [2023-11-29 02:48:37,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 169 transitions, 1246 flow [2023-11-29 02:48:37,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 169 transitions, 1209 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-29 02:48:37,706 INFO L231 Difference]: Finished difference. Result has 114 places, 142 transitions, 896 flow [2023-11-29 02:48:37,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=896, PETRI_PLACES=114, PETRI_TRANSITIONS=142} [2023-11-29 02:48:37,707 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, 11 predicate places. [2023-11-29 02:48:37,707 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 142 transitions, 896 flow [2023-11-29 02:48:37,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:48:37,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:48:37,708 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] [2023-11-29 02:48:37,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:48:37,708 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-29 02:48:37,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:48:37,709 INFO L85 PathProgramCache]: Analyzing trace with hash 961234539, now seen corresponding path program 1 times [2023-11-29 02:48:37,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:48:37,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145345983] [2023-11-29 02:48:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:48:37,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:48:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:48:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:48:38,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:48:38,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145345983] [2023-11-29 02:48:38,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145345983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:48:38,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:48:38,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:48:38,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372752784] [2023-11-29 02:48:38,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:48:38,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:48:38,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:48:38,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:48:38,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:48:38,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2023-11-29 02:48:38,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 142 transitions, 896 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2023-11-29 02:48:38,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:48:38,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2023-11-29 02:48:38,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:48:38,381 INFO L124 PetriNetUnfolderBase]: 1265/3070 cut-off events. [2023-11-29 02:48:38,381 INFO L125 PetriNetUnfolderBase]: For 3834/3855 co-relation queries the response was YES. [2023-11-29 02:48:38,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9633 conditions, 3070 events. 1265/3070 cut-off events. For 3834/3855 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 19884 event pairs, 326 based on Foata normal form. 86/3147 useless extension candidates. Maximal degree in co-relation 6876. Up to 2164 conditions per place. [2023-11-29 02:48:38,394 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 84 selfloop transitions, 8 changer transitions 0/132 dead transitions. [2023-11-29 02:48:38,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 965 flow [2023-11-29 02:48:38,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:48:38,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:48:38,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2023-11-29 02:48:38,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5560747663551402 [2023-11-29 02:48:38,396 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 238 transitions. [2023-11-29 02:48:38,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 238 transitions. [2023-11-29 02:48:38,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:48:38,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 238 transitions. [2023-11-29 02:48:38,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 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) [2023-11-29 02:48:38,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 02:48:38,398 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 02:48:38,398 INFO L175 Difference]: Start difference. First operand has 114 places, 142 transitions, 896 flow. Second operand 4 states and 238 transitions. [2023-11-29 02:48:38,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 965 flow [2023-11-29 02:48:38,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 132 transitions, 840 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-29 02:48:38,407 INFO L231 Difference]: Finished difference. Result has 101 places, 117 transitions, 619 flow [2023-11-29 02:48:38,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=619, PETRI_PLACES=101, PETRI_TRANSITIONS=117} [2023-11-29 02:48:38,408 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -2 predicate places. [2023-11-29 02:48:38,408 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 117 transitions, 619 flow [2023-11-29 02:48:38,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2023-11-29 02:48:38,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:48:38,409 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] [2023-11-29 02:48:38,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:48:38,409 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-29 02:48:38,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:48:38,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2026178739, now seen corresponding path program 1 times [2023-11-29 02:48:38,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:48:38,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631886156] [2023-11-29 02:48:38,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:48:38,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:48:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:48:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:48:38,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:48:38,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631886156] [2023-11-29 02:48:38,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631886156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:48:38,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:48:38,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:48:38,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302890014] [2023-11-29 02:48:38,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:48:38,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:48:38,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:48:38,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:48:38,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:48:38,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2023-11-29 02:48:38,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 117 transitions, 619 flow. Second operand has 6 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 states have internal predecessors, (286), 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) [2023-11-29 02:48:38,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:48:38,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2023-11-29 02:48:38,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:48:39,017 INFO L124 PetriNetUnfolderBase]: 808/2058 cut-off events. [2023-11-29 02:48:39,017 INFO L125 PetriNetUnfolderBase]: For 2017/2017 co-relation queries the response was YES. [2023-11-29 02:48:39,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5918 conditions, 2058 events. 808/2058 cut-off events. For 2017/2017 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 12117 event pairs, 294 based on Foata normal form. 56/2107 useless extension candidates. Maximal degree in co-relation 4495. Up to 1095 conditions per place. [2023-11-29 02:48:39,026 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 100 selfloop transitions, 7 changer transitions 0/147 dead transitions. [2023-11-29 02:48:39,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 147 transitions, 1011 flow [2023-11-29 02:48:39,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:48:39,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:48:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 247 transitions. [2023-11-29 02:48:39,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771028037383178 [2023-11-29 02:48:39,027 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 247 transitions. [2023-11-29 02:48:39,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 247 transitions. [2023-11-29 02:48:39,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:48:39,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 247 transitions. [2023-11-29 02:48:39,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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) [2023-11-29 02:48:39,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 02:48:39,030 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 02:48:39,030 INFO L175 Difference]: Start difference. First operand has 101 places, 117 transitions, 619 flow. Second operand 4 states and 247 transitions. [2023-11-29 02:48:39,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 147 transitions, 1011 flow [2023-11-29 02:48:39,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 147 transitions, 966 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-29 02:48:39,038 INFO L231 Difference]: Finished difference. Result has 100 places, 114 transitions, 587 flow [2023-11-29 02:48:39,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=587, PETRI_PLACES=100, PETRI_TRANSITIONS=114} [2023-11-29 02:48:39,039 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -3 predicate places. [2023-11-29 02:48:39,039 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 114 transitions, 587 flow [2023-11-29 02:48:39,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 states have internal predecessors, (286), 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) [2023-11-29 02:48:39,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:48:39,040 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] [2023-11-29 02:48:39,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:48:39,040 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-29 02:48:39,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:48:39,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1959771180, now seen corresponding path program 1 times [2023-11-29 02:48:39,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:48:39,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979723682] [2023-11-29 02:48:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:48:39,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:48:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:48:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:48:39,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:48:39,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979723682] [2023-11-29 02:48:39,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979723682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:48:39,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:48:39,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:48:39,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167298978] [2023-11-29 02:48:39,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:48:39,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:48:39,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:48:39,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:48:39,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:48:39,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2023-11-29 02:48:39,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 114 transitions, 587 flow. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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) [2023-11-29 02:48:39,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:48:39,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2023-11-29 02:48:39,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:48:39,545 INFO L124 PetriNetUnfolderBase]: 875/2061 cut-off events. [2023-11-29 02:48:39,545 INFO L125 PetriNetUnfolderBase]: For 1650/1650 co-relation queries the response was YES. [2023-11-29 02:48:39,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6028 conditions, 2061 events. 875/2061 cut-off events. For 1650/1650 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 11633 event pairs, 513 based on Foata normal form. 12/2061 useless extension candidates. Maximal degree in co-relation 3111. Up to 1276 conditions per place. [2023-11-29 02:48:39,552 INFO L140 encePairwiseOnDemand]: 95/107 looper letters, 90 selfloop transitions, 43 changer transitions 0/155 dead transitions. [2023-11-29 02:48:39,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 155 transitions, 1071 flow [2023-11-29 02:48:39,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:48:39,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:48:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 324 transitions. [2023-11-29 02:48:39,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046728971962616 [2023-11-29 02:48:39,555 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 324 transitions. [2023-11-29 02:48:39,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 324 transitions. [2023-11-29 02:48:39,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:48:39,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 324 transitions. [2023-11-29 02:48:39,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 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) [2023-11-29 02:48:39,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2023-11-29 02:48:39,558 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2023-11-29 02:48:39,559 INFO L175 Difference]: Start difference. First operand has 100 places, 114 transitions, 587 flow. Second operand 6 states and 324 transitions. [2023-11-29 02:48:39,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 155 transitions, 1071 flow [2023-11-29 02:48:39,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 155 transitions, 1045 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 02:48:39,566 INFO L231 Difference]: Finished difference. Result has 99 places, 120 transitions, 706 flow [2023-11-29 02:48:39,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=706, PETRI_PLACES=99, PETRI_TRANSITIONS=120} [2023-11-29 02:48:39,567 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -4 predicate places. [2023-11-29 02:48:39,568 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 120 transitions, 706 flow [2023-11-29 02:48:39,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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) [2023-11-29 02:48:39,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:48:39,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:48:39,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 02:48:39,568 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-29 02:48:39,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:48:39,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1770037650, now seen corresponding path program 1 times [2023-11-29 02:48:39,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:48:39,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136942261] [2023-11-29 02:48:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:48:39,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:48:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:48:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:48:40,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:48:40,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136942261] [2023-11-29 02:48:40,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136942261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:48:40,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:48:40,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:48:40,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064386999] [2023-11-29 02:48:40,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:48:40,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:48:40,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:48:40,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:48:40,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:48:40,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2023-11-29 02:48:40,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 120 transitions, 706 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2023-11-29 02:48:40,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:48:40,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2023-11-29 02:48:40,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:48:40,342 INFO L124 PetriNetUnfolderBase]: 800/1984 cut-off events. [2023-11-29 02:48:40,342 INFO L125 PetriNetUnfolderBase]: For 1780/1780 co-relation queries the response was YES. [2023-11-29 02:48:40,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5934 conditions, 1984 events. 800/1984 cut-off events. For 1780/1780 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 11503 event pairs, 670 based on Foata normal form. 1/1968 useless extension candidates. Maximal degree in co-relation 995. Up to 1659 conditions per place. [2023-11-29 02:48:40,349 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 0 selfloop transitions, 0 changer transitions 119/119 dead transitions. [2023-11-29 02:48:40,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 119 transitions, 860 flow [2023-11-29 02:48:40,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:48:40,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:48:40,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2023-11-29 02:48:40,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116822429906542 [2023-11-29 02:48:40,351 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 219 transitions. [2023-11-29 02:48:40,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 219 transitions. [2023-11-29 02:48:40,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:48:40,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 219 transitions. [2023-11-29 02:48:40,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2023-11-29 02:48:40,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 02:48:40,353 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 02:48:40,354 INFO L175 Difference]: Start difference. First operand has 99 places, 120 transitions, 706 flow. Second operand 4 states and 219 transitions. [2023-11-29 02:48:40,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 119 transitions, 860 flow [2023-11-29 02:48:40,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 119 transitions, 859 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:48:40,360 INFO L231 Difference]: Finished difference. Result has 100 places, 0 transitions, 0 flow [2023-11-29 02:48:40,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=100, PETRI_TRANSITIONS=0} [2023-11-29 02:48:40,361 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -3 predicate places. [2023-11-29 02:48:40,361 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 0 transitions, 0 flow [2023-11-29 02:48:40,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2023-11-29 02:48:40,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2023-11-29 02:48:40,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2023-11-29 02:48:40,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-11-29 02:48:40,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-11-29 02:48:40,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (10 of 15 remaining) [2023-11-29 02:48:40,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (9 of 15 remaining) [2023-11-29 02:48:40,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (8 of 15 remaining) [2023-11-29 02:48:40,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (7 of 15 remaining) [2023-11-29 02:48:40,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-11-29 02:48:40,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-11-29 02:48:40,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2023-11-29 02:48:40,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2023-11-29 02:48:40,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2023-11-29 02:48:40,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 15 remaining) [2023-11-29 02:48:40,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 15 remaining) [2023-11-29 02:48:40,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 02:48:40,366 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:48:40,369 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 02:48:40,369 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 02:48:40,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:48:40 BasicIcfg [2023-11-29 02:48:40,375 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 02:48:40,375 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 02:48:40,375 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 02:48:40,375 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 02:48:40,376 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:48:28" (3/4) ... [2023-11-29 02:48:40,378 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 02:48:40,381 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2023-11-29 02:48:40,382 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-29 02:48:40,386 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2023-11-29 02:48:40,386 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-29 02:48:40,387 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 02:48:40,387 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 02:48:40,462 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 02:48:40,463 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 02:48:40,463 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 02:48:40,464 INFO L158 Benchmark]: Toolchain (without parser) took 13553.11ms. Allocated memory was 169.9MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 133.7MB in the beginning and 415.6MB in the end (delta: -281.9MB). Peak memory consumption was 749.6MB. Max. memory is 16.1GB. [2023-11-29 02:48:40,464 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory was 62.7MB in the beginning and 62.6MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:48:40,465 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.20ms. Allocated memory is still 169.9MB. Free memory was 133.4MB in the beginning and 113.2MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 02:48:40,465 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.92ms. Allocated memory is still 169.9MB. Free memory was 113.2MB in the beginning and 111.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:48:40,466 INFO L158 Benchmark]: Boogie Preprocessor took 54.42ms. Allocated memory is still 169.9MB. Free memory was 111.0MB in the beginning and 107.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 02:48:40,466 INFO L158 Benchmark]: RCFGBuilder took 681.88ms. Allocated memory is still 169.9MB. Free memory was 107.8MB in the beginning and 116.7MB in the end (delta: -8.9MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2023-11-29 02:48:40,466 INFO L158 Benchmark]: TraceAbstraction took 12241.44ms. Allocated memory was 169.9MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 116.2MB in the beginning and 419.8MB in the end (delta: -303.6MB). Peak memory consumption was 726.1MB. Max. memory is 16.1GB. [2023-11-29 02:48:40,467 INFO L158 Benchmark]: Witness Printer took 88.24ms. Allocated memory is still 1.2GB. Free memory was 419.8MB in the beginning and 415.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 02:48:40,468 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 111.1MB. Free memory was 62.7MB in the beginning and 62.6MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 434.20ms. Allocated memory is still 169.9MB. Free memory was 133.4MB in the beginning and 113.2MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.92ms. Allocated memory is still 169.9MB. Free memory was 113.2MB in the beginning and 111.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.42ms. Allocated memory is still 169.9MB. Free memory was 111.0MB in the beginning and 107.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 681.88ms. Allocated memory is still 169.9MB. Free memory was 107.8MB in the beginning and 116.7MB in the end (delta: -8.9MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. * TraceAbstraction took 12241.44ms. Allocated memory was 169.9MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 116.2MB in the beginning and 419.8MB in the end (delta: -303.6MB). Peak memory consumption was 726.1MB. Max. memory is 16.1GB. * Witness Printer took 88.24ms. Allocated memory is still 1.2GB. Free memory was 419.8MB in the beginning and 415.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 707]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 130 locations, 15 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: 12.1s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 846 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 741 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 137 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1850 IncrementalHoareTripleChecker+Invalid, 1987 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 137 mSolverCounterUnsat, 30 mSDtfsCounter, 1850 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=896occurred in iteration=9, InterpolantAutomatonStates: 54, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 310 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 297 ConstructedInterpolants, 0 QuantifiedInterpolants, 2321 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 02:48:40,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f57b5f-7171-4c64-8b50-fbda4b5f8bed/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE