./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757eb524-e982-4067-a182-8b9815c61871/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757eb524-e982-4067-a182-8b9815c61871/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757eb524-e982-4067-a182-8b9815c61871/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757eb524-e982-4067-a182-8b9815c61871/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757eb524-e982-4067-a182-8b9815c61871/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757eb524-e982-4067-a182-8b9815c61871/bin/uautomizer-verify-NlZe1sFDwI --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 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:44:33,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:44:33,524 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757eb524-e982-4067-a182-8b9815c61871/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:44:33,531 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:44:33,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:44:33,560 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:44:33,562 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:44:33,562 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:44:33,563 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:44:33,564 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:44:33,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:44:33,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:44:33,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:44:33,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:44:33,569 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:44:33,570 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:44:33,570 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:44:33,571 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:44:33,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:44:33,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:44:33,573 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:44:33,574 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:44:33,575 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:44:33,575 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:44:33,576 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:44:33,577 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:44:33,577 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:44:33,578 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:44:33,579 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:44:33,579 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:44:33,580 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:44:33,580 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:44:33,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:44:33,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:44:33,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:44:33,585 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:44:33,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:44:33,587 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:44:33,588 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:44:33,588 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:44:33,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:44:33,589 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_757eb524-e982-4067-a182-8b9815c61871/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757eb524-e982-4067-a182-8b9815c61871/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 [2023-11-24 21:44:34,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:44:34,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:44:34,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:44:34,094 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:44:34,094 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:44:34,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757eb524-e982-4067-a182-8b9815c61871/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-24 21:44:37,294 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:44:37,567 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:44:37,567 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757eb524-e982-4067-a182-8b9815c61871/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-24 21:44:37,577 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757eb524-e982-4067-a182-8b9815c61871/bin/uautomizer-verify-NlZe1sFDwI/data/b67bfdf5d/21c98b64b44b4045a4e468f9cc0ddc1c/FLAG4d40f8514 [2023-11-24 21:44:37,593 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757eb524-e982-4067-a182-8b9815c61871/bin/uautomizer-verify-NlZe1sFDwI/data/b67bfdf5d/21c98b64b44b4045a4e468f9cc0ddc1c [2023-11-24 21:44:37,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:44:37,598 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:44:37,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:44:37,600 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:44:37,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:44:37,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:44:37" (1/1) ... [2023-11-24 21:44:37,609 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c9390e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:37, skipping insertion in model container [2023-11-24 21:44:37,609 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:44:37" (1/1) ... [2023-11-24 21:44:37,645 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:44:37,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:44:37,998 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:44:38,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:44:38,092 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:44:38,092 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:44:38,100 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:44:38,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:38 WrapperNode [2023-11-24 21:44:38,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:44:38,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:44:38,104 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:44:38,104 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:44:38,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:38" (1/1) ... [2023-11-24 21:44:38,134 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:38" (1/1) ... [2023-11-24 21:44:38,187 INFO L138 Inliner]: procedures = 22, calls = 111, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 269 [2023-11-24 21:44:38,196 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:44:38,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:44:38,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:44:38,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:44:38,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:38" (1/1) ... [2023-11-24 21:44:38,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:38" (1/1) ... [2023-11-24 21:44:38,227 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:38" (1/1) ... [2023-11-24 21:44:38,262 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-24 21:44:38,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:38" (1/1) ... [2023-11-24 21:44:38,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:38" (1/1) ... [2023-11-24 21:44:38,279 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:38" (1/1) ... [2023-11-24 21:44:38,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:38" (1/1) ... [2023-11-24 21:44:38,303 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:38" (1/1) ... [2023-11-24 21:44:38,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:38" (1/1) ... [2023-11-24 21:44:38,310 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:44:38,311 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:44:38,311 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:44:38,312 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:44:38,318 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:38" (1/1) ... [2023-11-24 21:44:38,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:44:38,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757eb524-e982-4067-a182-8b9815c61871/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:44:38,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757eb524-e982-4067-a182-8b9815c61871/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:44:38,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757eb524-e982-4067-a182-8b9815c61871/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:44:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:44:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 21:44:38,441 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 21:44:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 21:44:38,441 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 21:44:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 21:44:38,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 21:44:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:44:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:44:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:44:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:44:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:44:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:44:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:44:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:44:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:44:38,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:44:38,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:44:38,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:44:38,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:44:38,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:44:38,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:44:38,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:44:38,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 21:44:38,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:44:38,449 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:44:38,580 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:44:38,583 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:44:39,036 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:44:39,405 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:44:39,406 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:44:39,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:44:39 BoogieIcfgContainer [2023-11-24 21:44:39,407 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:44:39,413 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:44:39,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:44:39,416 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:44:39,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:44:37" (1/3) ... [2023-11-24 21:44:39,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c9975f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:44:39, skipping insertion in model container [2023-11-24 21:44:39,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:38" (2/3) ... [2023-11-24 21:44:39,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c9975f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:44:39, skipping insertion in model container [2023-11-24 21:44:39,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:44:39" (3/3) ... [2023-11-24 21:44:39,421 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-11-24 21:44:39,441 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:44:39,442 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-24 21:44:39,442 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:44:39,514 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 21:44:39,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 80 transitions, 181 flow [2023-11-24 21:44:39,647 INFO L124 PetriNetUnfolderBase]: 0/77 cut-off events. [2023-11-24 21:44:39,647 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-24 21:44:39,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 0/77 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-24 21:44:39,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 80 transitions, 181 flow [2023-11-24 21:44:39,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 76 transitions, 170 flow [2023-11-24 21:44:39,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:44:39,686 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;@71305ae5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:44:39,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-24 21:44:39,690 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:44:39,690 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:44:39,691 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:44:39,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:39,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:44:39,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:44:39,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:39,697 INFO L85 PathProgramCache]: Analyzing trace with hash 18505, now seen corresponding path program 1 times [2023-11-24 21:44:39,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:39,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527269144] [2023-11-24 21:44:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:39,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:40,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:40,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527269144] [2023-11-24 21:44:40,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527269144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:40,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:40,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:44:40,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810815912] [2023-11-24 21:44:40,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:40,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:44:40,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:40,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:44:40,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:44:40,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 80 [2023-11-24 21:44:40,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2023-11-24 21:44:40,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:40,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 80 [2023-11-24 21:44:40,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:41,184 INFO L124 PetriNetUnfolderBase]: 2574/4906 cut-off events. [2023-11-24 21:44:41,185 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2023-11-24 21:44:41,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8857 conditions, 4906 events. 2574/4906 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 35935 event pairs, 2574 based on Foata normal form. 1/4542 useless extension candidates. Maximal degree in co-relation 8265. Up to 3775 conditions per place. [2023-11-24 21:44:41,242 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 30 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-11-24 21:44:41,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 224 flow [2023-11-24 21:44:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:41,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2023-11-24 21:44:41,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7041666666666667 [2023-11-24 21:44:41,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2023-11-24 21:44:41,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2023-11-24 21:44:41,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:41,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2023-11-24 21:44:41,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 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) [2023-11-24 21:44:41,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2023-11-24 21:44:41,279 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2023-11-24 21:44:41,281 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 170 flow. Second operand 3 states and 169 transitions. [2023-11-24 21:44:41,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 224 flow [2023-11-24 21:44:41,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 72 transitions, 212 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-24 21:44:41,297 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 152 flow [2023-11-24 21:44:41,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2023-11-24 21:44:41,313 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -8 predicate places. [2023-11-24 21:44:41,314 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 152 flow [2023-11-24 21:44:41,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2023-11-24 21:44:41,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:41,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:44:41,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:44:41,318 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:44:41,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:41,319 INFO L85 PathProgramCache]: Analyzing trace with hash 18506, now seen corresponding path program 1 times [2023-11-24 21:44:41,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:41,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879420990] [2023-11-24 21:44:41,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:41,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:41,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:41,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:41,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879420990] [2023-11-24 21:44:41,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879420990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:41,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:41,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:44:41,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773164016] [2023-11-24 21:44:41,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:41,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:44:41,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:41,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:44:41,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:44:41,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 80 [2023-11-24 21:44:41,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2023-11-24 21:44:41,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:41,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 80 [2023-11-24 21:44:41,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:42,161 INFO L124 PetriNetUnfolderBase]: 1692/3443 cut-off events. [2023-11-24 21:44:42,162 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-24 21:44:42,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6053 conditions, 3443 events. 1692/3443 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 24599 event pairs, 1692 based on Foata normal form. 344/3479 useless extension candidates. Maximal degree in co-relation 6047. Up to 2549 conditions per place. [2023-11-24 21:44:42,197 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 28 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-11-24 21:44:42,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 70 transitions, 206 flow [2023-11-24 21:44:42,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:42,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:42,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2023-11-24 21:44:42,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667 [2023-11-24 21:44:42,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 172 transitions. [2023-11-24 21:44:42,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 172 transitions. [2023-11-24 21:44:42,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:42,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 172 transitions. [2023-11-24 21:44:42,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2023-11-24 21:44:42,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2023-11-24 21:44:42,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2023-11-24 21:44:42,205 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 152 flow. Second operand 3 states and 172 transitions. [2023-11-24 21:44:42,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 70 transitions, 206 flow [2023-11-24 21:44:42,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 70 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:44:42,209 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 149 flow [2023-11-24 21:44:42,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2023-11-24 21:44:42,210 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -9 predicate places. [2023-11-24 21:44:42,210 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 149 flow [2023-11-24 21:44:42,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2023-11-24 21:44:42,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:42,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:44:42,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:44:42,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:44:42,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:42,213 INFO L85 PathProgramCache]: Analyzing trace with hash 551880983, now seen corresponding path program 1 times [2023-11-24 21:44:42,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:42,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821999544] [2023-11-24 21:44:42,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:42,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:42,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:42,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821999544] [2023-11-24 21:44:42,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821999544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:42,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:42,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:44:42,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643263154] [2023-11-24 21:44:42,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:42,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:44:42,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:42,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:44:42,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:44:42,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 80 [2023-11-24 21:44:42,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2023-11-24 21:44:42,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:42,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 80 [2023-11-24 21:44:42,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:42,915 INFO L124 PetriNetUnfolderBase]: 1782/3488 cut-off events. [2023-11-24 21:44:42,915 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-24 21:44:42,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6245 conditions, 3488 events. 1782/3488 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 24426 event pairs, 1782 based on Foata normal form. 0/3283 useless extension candidates. Maximal degree in co-relation 6238. Up to 2695 conditions per place. [2023-11-24 21:44:42,948 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 30 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-11-24 21:44:42,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 68 transitions, 207 flow [2023-11-24 21:44:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:42,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2023-11-24 21:44:42,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-24 21:44:42,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 168 transitions. [2023-11-24 21:44:42,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 168 transitions. [2023-11-24 21:44:42,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:42,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 168 transitions. [2023-11-24 21:44:42,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2023-11-24 21:44:42,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2023-11-24 21:44:42,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2023-11-24 21:44:42,958 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 149 flow. Second operand 3 states and 168 transitions. [2023-11-24 21:44:42,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 68 transitions, 207 flow [2023-11-24 21:44:42,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 68 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:44:42,961 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 146 flow [2023-11-24 21:44:42,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2023-11-24 21:44:42,963 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2023-11-24 21:44:42,964 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 146 flow [2023-11-24 21:44:42,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2023-11-24 21:44:42,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:42,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:44:42,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:44:42,965 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:44:42,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:42,967 INFO L85 PathProgramCache]: Analyzing trace with hash 551880984, now seen corresponding path program 1 times [2023-11-24 21:44:42,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:42,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460481735] [2023-11-24 21:44:42,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:42,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:43,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:43,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460481735] [2023-11-24 21:44:43,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460481735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:43,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:43,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:44:43,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090555844] [2023-11-24 21:44:43,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:43,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:44:43,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:43,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:44:43,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:44:43,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 80 [2023-11-24 21:44:43,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-11-24 21:44:43,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:43,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 80 [2023-11-24 21:44:43,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:43,585 INFO L124 PetriNetUnfolderBase]: 1692/3339 cut-off events. [2023-11-24 21:44:43,585 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-24 21:44:43,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5951 conditions, 3339 events. 1692/3339 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 23345 event pairs, 1692 based on Foata normal form. 56/3191 useless extension candidates. Maximal degree in co-relation 5943. Up to 2549 conditions per place. [2023-11-24 21:44:43,676 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 28 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-11-24 21:44:43,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 66 transitions, 200 flow [2023-11-24 21:44:43,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:43,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2023-11-24 21:44:43,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667 [2023-11-24 21:44:43,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 172 transitions. [2023-11-24 21:44:43,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 172 transitions. [2023-11-24 21:44:43,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:43,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 172 transitions. [2023-11-24 21:44:43,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2023-11-24 21:44:43,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2023-11-24 21:44:43,683 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2023-11-24 21:44:43,683 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 146 flow. Second operand 3 states and 172 transitions. [2023-11-24 21:44:43,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 66 transitions, 200 flow [2023-11-24 21:44:43,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 66 transitions, 199 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:44:43,688 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 143 flow [2023-11-24 21:44:43,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2023-11-24 21:44:43,690 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -11 predicate places. [2023-11-24 21:44:43,691 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 143 flow [2023-11-24 21:44:43,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-11-24 21:44:43,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:43,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:43,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:44:43,692 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:44:43,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:43,693 INFO L85 PathProgramCache]: Analyzing trace with hash -47840841, now seen corresponding path program 1 times [2023-11-24 21:44:43,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:43,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248749987] [2023-11-24 21:44:43,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:43,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:43,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:43,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248749987] [2023-11-24 21:44:43,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248749987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:43,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:43,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:44:43,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124384768] [2023-11-24 21:44:43,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:43,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:44:43,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:43,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:44:43,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:44:43,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 80 [2023-11-24 21:44:43,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2023-11-24 21:44:43,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:43,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 80 [2023-11-24 21:44:43,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:44,295 INFO L124 PetriNetUnfolderBase]: 1782/3483 cut-off events. [2023-11-24 21:44:44,295 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-24 21:44:44,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6242 conditions, 3483 events. 1782/3483 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 24352 event pairs, 1782 based on Foata normal form. 0/3304 useless extension candidates. Maximal degree in co-relation 6233. Up to 2695 conditions per place. [2023-11-24 21:44:44,326 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 30 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-11-24 21:44:44,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 201 flow [2023-11-24 21:44:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:44,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2023-11-24 21:44:44,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-24 21:44:44,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 168 transitions. [2023-11-24 21:44:44,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 168 transitions. [2023-11-24 21:44:44,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:44,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 168 transitions. [2023-11-24 21:44:44,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2023-11-24 21:44:44,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2023-11-24 21:44:44,332 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2023-11-24 21:44:44,332 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 143 flow. Second operand 3 states and 168 transitions. [2023-11-24 21:44:44,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 201 flow [2023-11-24 21:44:44,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 64 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:44:44,336 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 140 flow [2023-11-24 21:44:44,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2023-11-24 21:44:44,339 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -12 predicate places. [2023-11-24 21:44:44,340 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 140 flow [2023-11-24 21:44:44,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2023-11-24 21:44:44,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:44,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:44,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:44:44,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:44:44,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:44,343 INFO L85 PathProgramCache]: Analyzing trace with hash -47840840, now seen corresponding path program 1 times [2023-11-24 21:44:44,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:44,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217576438] [2023-11-24 21:44:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:44,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:44,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:44,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217576438] [2023-11-24 21:44:44,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217576438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:44,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:44,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:44:44,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915967115] [2023-11-24 21:44:44,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:44,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:44:44,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:44,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:44:44,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:44:44,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 80 [2023-11-24 21:44:44,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2023-11-24 21:44:44,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:44,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 80 [2023-11-24 21:44:44,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:45,046 INFO L124 PetriNetUnfolderBase]: 1692/3307 cut-off events. [2023-11-24 21:44:45,047 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-24 21:44:45,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5921 conditions, 3307 events. 1692/3307 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 23096 event pairs, 1692 based on Foata normal form. 56/3191 useless extension candidates. Maximal degree in co-relation 5911. Up to 2549 conditions per place. [2023-11-24 21:44:45,070 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 28 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-11-24 21:44:45,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 62 transitions, 194 flow [2023-11-24 21:44:45,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2023-11-24 21:44:45,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667 [2023-11-24 21:44:45,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 172 transitions. [2023-11-24 21:44:45,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 172 transitions. [2023-11-24 21:44:45,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:45,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 172 transitions. [2023-11-24 21:44:45,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2023-11-24 21:44:45,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2023-11-24 21:44:45,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2023-11-24 21:44:45,075 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 140 flow. Second operand 3 states and 172 transitions. [2023-11-24 21:44:45,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 62 transitions, 194 flow [2023-11-24 21:44:45,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 62 transitions, 193 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:44:45,077 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 137 flow [2023-11-24 21:44:45,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-11-24 21:44:45,078 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -13 predicate places. [2023-11-24 21:44:45,079 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 137 flow [2023-11-24 21:44:45,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2023-11-24 21:44:45,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:45,079 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] [2023-11-24 21:44:45,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:44:45,080 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:44:45,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:45,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1654810382, now seen corresponding path program 1 times [2023-11-24 21:44:45,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:45,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268530603] [2023-11-24 21:44:45,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:45,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:45,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:45,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268530603] [2023-11-24 21:44:45,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268530603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:45,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:45,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:44:45,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389344872] [2023-11-24 21:44:45,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:45,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:44:45,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:45,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:44:45,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:44:45,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 80 [2023-11-24 21:44:45,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 137 flow. Second operand has 9 states, 9 states have (on average 46.888888888888886) internal successors, (422), 9 states have internal predecessors, (422), 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) [2023-11-24 21:44:45,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:45,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 80 [2023-11-24 21:44:45,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:46,768 INFO L124 PetriNetUnfolderBase]: 4543/7983 cut-off events. [2023-11-24 21:44:46,769 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-11-24 21:44:46,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15025 conditions, 7983 events. 4543/7983 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 57563 event pairs, 1545 based on Foata normal form. 1/7895 useless extension candidates. Maximal degree in co-relation 15014. Up to 2042 conditions per place. [2023-11-24 21:44:46,825 INFO L140 encePairwiseOnDemand]: 72/80 looper letters, 146 selfloop transitions, 15 changer transitions 21/209 dead transitions. [2023-11-24 21:44:46,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 209 transitions, 821 flow [2023-11-24 21:44:46,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:44:46,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-24 21:44:46,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 656 transitions. [2023-11-24 21:44:46,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2023-11-24 21:44:46,829 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 656 transitions. [2023-11-24 21:44:46,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 656 transitions. [2023-11-24 21:44:46,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:46,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 656 transitions. [2023-11-24 21:44:46,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 59.63636363636363) internal successors, (656), 11 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:46,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 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) [2023-11-24 21:44:46,835 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 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) [2023-11-24 21:44:46,835 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 137 flow. Second operand 11 states and 656 transitions. [2023-11-24 21:44:46,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 209 transitions, 821 flow [2023-11-24 21:44:46,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 209 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:44:46,840 INFO L231 Difference]: Finished difference. Result has 86 places, 78 transitions, 228 flow [2023-11-24 21:44:46,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=228, PETRI_PLACES=86, PETRI_TRANSITIONS=78} [2023-11-24 21:44:46,841 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2023-11-24 21:44:46,842 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 78 transitions, 228 flow [2023-11-24 21:44:46,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.888888888888886) internal successors, (422), 9 states have internal predecessors, (422), 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) [2023-11-24 21:44:46,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:46,842 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] [2023-11-24 21:44:46,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:44:46,843 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:44:46,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:46,843 INFO L85 PathProgramCache]: Analyzing trace with hash 627069332, now seen corresponding path program 2 times [2023-11-24 21:44:46,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:46,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248120725] [2023-11-24 21:44:46,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:46,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:47,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:47,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248120725] [2023-11-24 21:44:47,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248120725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:47,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:47,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:44:47,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034566046] [2023-11-24 21:44:47,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:47,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:44:47,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:47,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:44:47,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:44:47,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 80 [2023-11-24 21:44:47,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 78 transitions, 228 flow. Second operand has 8 states, 8 states have (on average 47.5) internal successors, (380), 8 states have internal predecessors, (380), 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) [2023-11-24 21:44:47,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:47,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 80 [2023-11-24 21:44:47,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:49,171 INFO L124 PetriNetUnfolderBase]: 7153/12766 cut-off events. [2023-11-24 21:44:49,171 INFO L125 PetriNetUnfolderBase]: For 186/188 co-relation queries the response was YES. [2023-11-24 21:44:49,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24961 conditions, 12766 events. 7153/12766 cut-off events. For 186/188 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 96486 event pairs, 2487 based on Foata normal form. 104/12560 useless extension candidates. Maximal degree in co-relation 24945. Up to 7814 conditions per place. [2023-11-24 21:44:49,297 INFO L140 encePairwiseOnDemand]: 70/80 looper letters, 111 selfloop transitions, 22 changer transitions 0/176 dead transitions. [2023-11-24 21:44:49,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 176 transitions, 696 flow [2023-11-24 21:44:49,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:44:49,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:44:49,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 478 transitions. [2023-11-24 21:44:49,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.746875 [2023-11-24 21:44:49,300 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 478 transitions. [2023-11-24 21:44:49,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 478 transitions. [2023-11-24 21:44:49,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:49,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 478 transitions. [2023-11-24 21:44:49,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 59.75) internal successors, (478), 8 states have internal predecessors, (478), 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) [2023-11-24 21:44:49,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 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) [2023-11-24 21:44:49,305 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 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) [2023-11-24 21:44:49,305 INFO L175 Difference]: Start difference. First operand has 86 places, 78 transitions, 228 flow. Second operand 8 states and 478 transitions. [2023-11-24 21:44:49,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 176 transitions, 696 flow [2023-11-24 21:44:49,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 176 transitions, 694 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-24 21:44:49,323 INFO L231 Difference]: Finished difference. Result has 95 places, 100 transitions, 368 flow [2023-11-24 21:44:49,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=368, PETRI_PLACES=95, PETRI_TRANSITIONS=100} [2023-11-24 21:44:49,324 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 9 predicate places. [2023-11-24 21:44:49,325 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 100 transitions, 368 flow [2023-11-24 21:44:49,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 47.5) internal successors, (380), 8 states have internal predecessors, (380), 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) [2023-11-24 21:44:49,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:49,326 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] [2023-11-24 21:44:49,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:44:49,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:44:49,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:49,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1001461450, now seen corresponding path program 3 times [2023-11-24 21:44:49,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:49,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576720650] [2023-11-24 21:44:49,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:49,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:49,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:49,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:49,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576720650] [2023-11-24 21:44:49,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576720650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:49,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:49,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:44:49,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408968844] [2023-11-24 21:44:49,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:49,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:44:49,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:49,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:44:49,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:44:49,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 80 [2023-11-24 21:44:49,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 100 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2023-11-24 21:44:49,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:49,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 80 [2023-11-24 21:44:49,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:50,911 INFO L124 PetriNetUnfolderBase]: 4517/9147 cut-off events. [2023-11-24 21:44:50,912 INFO L125 PetriNetUnfolderBase]: For 1691/1722 co-relation queries the response was YES. [2023-11-24 21:44:50,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19570 conditions, 9147 events. 4517/9147 cut-off events. For 1691/1722 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 74718 event pairs, 2684 based on Foata normal form. 165/8997 useless extension candidates. Maximal degree in co-relation 19548. Up to 5261 conditions per place. [2023-11-24 21:44:51,194 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 59 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-11-24 21:44:51,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 118 transitions, 547 flow [2023-11-24 21:44:51,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:51,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:51,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2023-11-24 21:44:51,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2023-11-24 21:44:51,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2023-11-24 21:44:51,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2023-11-24 21:44:51,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:51,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2023-11-24 21:44:51,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:51,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2023-11-24 21:44:51,199 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2023-11-24 21:44:51,199 INFO L175 Difference]: Start difference. First operand has 95 places, 100 transitions, 368 flow. Second operand 3 states and 188 transitions. [2023-11-24 21:44:51,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 118 transitions, 547 flow [2023-11-24 21:44:51,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 118 transitions, 547 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 21:44:51,236 INFO L231 Difference]: Finished difference. Result has 98 places, 100 transitions, 378 flow [2023-11-24 21:44:51,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=98, PETRI_TRANSITIONS=100} [2023-11-24 21:44:51,237 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2023-11-24 21:44:51,237 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 100 transitions, 378 flow [2023-11-24 21:44:51,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2023-11-24 21:44:51,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:51,238 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] [2023-11-24 21:44:51,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:44:51,239 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:44:51,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:51,240 INFO L85 PathProgramCache]: Analyzing trace with hash 9915972, now seen corresponding path program 4 times [2023-11-24 21:44:51,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:51,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828625923] [2023-11-24 21:44:51,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:51,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:51,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:51,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828625923] [2023-11-24 21:44:51,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828625923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:51,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:51,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:44:51,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900547849] [2023-11-24 21:44:51,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:51,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:44:51,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:51,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:44:51,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:44:51,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 80 [2023-11-24 21:44:51,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 100 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2023-11-24 21:44:51,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:51,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 80 [2023-11-24 21:44:51,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:51,944 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([625] L136-->L139: Formula: (= v_~n3~0_33 (+ v_~n3~0_34 1)) InVars {~n3~0=v_~n3~0_34} OutVars{thread3Thread1of1ForFork1_#t~post3#1=|v_thread3Thread1of1ForFork1_#t~post3#1_1|, ~n3~0=v_~n3~0_33} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_#t~post3#1, ~n3~0][64], [Black: 156#(and (<= 1 ~n1~0) (= ~n2~0 ~n1~0) (<= ~n3~0 ~n1~0)), 111#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), Black: 148#(and (<= 1 ~n1~0) (<= (+ ~n3~0 1) ~n1~0) (<= (+ ~n2~0 1) ~n1~0)), Black: 149#(and (<= 1 ~n1~0) (= ~n2~0 ~n1~0) (<= (+ ~n3~0 1) ~n1~0)), 170#(= ~e3~0 1), 99#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (= |ULTIMATE.start_main_~#t1~0#1.offset| 0)), 37#L190-4true, 59#L79true, 145#true, Black: 165#(= ~e2~0 1), 107#(and (= 4 (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|)) (= |ULTIMATE.start_main_~#t2~0#1.offset| 0)), 95#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), Black: 133#(and (= 2 ~i~0) (= ~i1~0 0) (= ~i2~0 1)), Black: 119#(= ~i~0 0), 40#L103true, 115#(and (= (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|) 4) (= |ULTIMATE.start_main_~#t3~0#1.offset| 0)), 85#L139true, 103#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 129#(and (= ~i1~0 0) (= ~i~0 1)), Black: 147#(and (<= 0 ~n1~0) (<= ~n3~0 ~n1~0) (<= ~n2~0 ~n1~0)), 163#true, Black: 154#(and (<= 1 ~n1~0) (<= 2 ~n2~0) (<= ~n1~0 ~n2~0))]) [2023-11-24 21:44:51,944 INFO L294 olderBase$Statistics]: this new event has 34 ancestors and is cut-off event [2023-11-24 21:44:51,944 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-11-24 21:44:51,944 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-11-24 21:44:51,945 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-11-24 21:44:51,984 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([625] L136-->L139: Formula: (= v_~n3~0_33 (+ v_~n3~0_34 1)) InVars {~n3~0=v_~n3~0_34} OutVars{thread3Thread1of1ForFork1_#t~post3#1=|v_thread3Thread1of1ForFork1_#t~post3#1_1|, ~n3~0=v_~n3~0_33} AuxVars[] AssignedVars[thread3Thread1of1ForFork1_#t~post3#1, ~n3~0][64], [Black: 156#(and (<= 1 ~n1~0) (= ~n2~0 ~n1~0) (<= ~n3~0 ~n1~0)), 111#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), Black: 148#(and (<= 1 ~n1~0) (<= (+ ~n3~0 1) ~n1~0) (<= (+ ~n2~0 1) ~n1~0)), Black: 149#(and (<= 1 ~n1~0) (= ~n2~0 ~n1~0) (<= (+ ~n3~0 1) ~n1~0)), 170#(= ~e3~0 1), 99#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (= |ULTIMATE.start_main_~#t1~0#1.offset| 0)), 59#L79true, Black: 165#(= ~e2~0 1), 16#L191true, 145#true, 107#(and (= 4 (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|)) (= |ULTIMATE.start_main_~#t2~0#1.offset| 0)), 95#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), Black: 133#(and (= 2 ~i~0) (= ~i1~0 0) (= ~i2~0 1)), Black: 119#(= ~i~0 0), 115#(and (= (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|) 4) (= |ULTIMATE.start_main_~#t3~0#1.offset| 0)), 40#L103true, 85#L139true, 103#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 129#(and (= ~i1~0 0) (= ~i~0 1)), 163#true, Black: 147#(and (<= 0 ~n1~0) (<= ~n3~0 ~n1~0) (<= ~n2~0 ~n1~0)), Black: 154#(and (<= 1 ~n1~0) (<= 2 ~n2~0) (<= ~n1~0 ~n2~0))]) [2023-11-24 21:44:51,984 INFO L294 olderBase$Statistics]: this new event has 35 ancestors and is cut-off event [2023-11-24 21:44:51,984 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-11-24 21:44:51,984 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-11-24 21:44:51,984 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-11-24 21:44:52,799 INFO L124 PetriNetUnfolderBase]: 4641/9489 cut-off events. [2023-11-24 21:44:52,799 INFO L125 PetriNetUnfolderBase]: For 2173/2251 co-relation queries the response was YES. [2023-11-24 21:44:52,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21009 conditions, 9489 events. 4641/9489 cut-off events. For 2173/2251 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 78732 event pairs, 3000 based on Foata normal form. 159/9290 useless extension candidates. Maximal degree in co-relation 20985. Up to 5418 conditions per place. [2023-11-24 21:44:52,907 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 60 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2023-11-24 21:44:52,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 119 transitions, 572 flow [2023-11-24 21:44:52,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:52,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2023-11-24 21:44:52,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7791666666666667 [2023-11-24 21:44:52,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 187 transitions. [2023-11-24 21:44:52,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 187 transitions. [2023-11-24 21:44:52,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:52,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 187 transitions. [2023-11-24 21:44:52,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:52,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2023-11-24 21:44:52,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 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) [2023-11-24 21:44:52,913 INFO L175 Difference]: Start difference. First operand has 98 places, 100 transitions, 378 flow. Second operand 3 states and 187 transitions. [2023-11-24 21:44:52,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 119 transitions, 572 flow [2023-11-24 21:44:52,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 119 transitions, 568 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:44:52,973 INFO L231 Difference]: Finished difference. Result has 99 places, 100 transitions, 384 flow [2023-11-24 21:44:52,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=99, PETRI_TRANSITIONS=100} [2023-11-24 21:44:52,974 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 13 predicate places. [2023-11-24 21:44:52,974 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 100 transitions, 384 flow [2023-11-24 21:44:52,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2023-11-24 21:44:52,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:52,975 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] [2023-11-24 21:44:52,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:44:52,975 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:44:52,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:52,976 INFO L85 PathProgramCache]: Analyzing trace with hash -886507396, now seen corresponding path program 5 times [2023-11-24 21:44:52,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:52,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492256576] [2023-11-24 21:44:52,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:52,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:53,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:53,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492256576] [2023-11-24 21:44:53,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492256576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:53,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:53,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:44:53,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192834253] [2023-11-24 21:44:53,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:53,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:44:53,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:53,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:44:53,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:44:53,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 80 [2023-11-24 21:44:53,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 100 transitions, 384 flow. Second operand has 9 states, 9 states have (on average 44.22222222222222) internal successors, (398), 9 states have internal predecessors, (398), 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) [2023-11-24 21:44:53,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:53,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 80 [2023-11-24 21:44:53,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:56,583 INFO L124 PetriNetUnfolderBase]: 10187/18037 cut-off events. [2023-11-24 21:44:56,583 INFO L125 PetriNetUnfolderBase]: For 5782/5848 co-relation queries the response was YES. [2023-11-24 21:44:56,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42981 conditions, 18037 events. 10187/18037 cut-off events. For 5782/5848 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 138496 event pairs, 4173 based on Foata normal form. 134/17684 useless extension candidates. Maximal degree in co-relation 42956. Up to 11044 conditions per place. [2023-11-24 21:44:56,746 INFO L140 encePairwiseOnDemand]: 70/80 looper letters, 123 selfloop transitions, 42 changer transitions 0/205 dead transitions. [2023-11-24 21:44:56,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 205 transitions, 1039 flow [2023-11-24 21:44:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:44:56,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:44:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 552 transitions. [2023-11-24 21:44:56,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.69 [2023-11-24 21:44:56,750 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 552 transitions. [2023-11-24 21:44:56,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 552 transitions. [2023-11-24 21:44:56,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:56,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 552 transitions. [2023-11-24 21:44:56,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 55.2) internal successors, (552), 10 states have internal predecessors, (552), 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) [2023-11-24 21:44:56,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 80.0) internal successors, (880), 11 states have internal predecessors, (880), 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) [2023-11-24 21:44:56,760 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 80.0) internal successors, (880), 11 states have internal predecessors, (880), 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) [2023-11-24 21:44:56,761 INFO L175 Difference]: Start difference. First operand has 99 places, 100 transitions, 384 flow. Second operand 10 states and 552 transitions. [2023-11-24 21:44:56,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 205 transitions, 1039 flow [2023-11-24 21:44:56,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 205 transitions, 1035 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:44:56,843 INFO L231 Difference]: Finished difference. Result has 111 places, 121 transitions, 622 flow [2023-11-24 21:44:56,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=622, PETRI_PLACES=111, PETRI_TRANSITIONS=121} [2023-11-24 21:44:56,845 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 25 predicate places. [2023-11-24 21:44:56,845 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 121 transitions, 622 flow [2023-11-24 21:44:56,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 44.22222222222222) internal successors, (398), 9 states have internal predecessors, (398), 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) [2023-11-24 21:44:56,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:56,846 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] [2023-11-24 21:44:56,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:44:56,846 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:44:56,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:56,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1797541330, now seen corresponding path program 6 times [2023-11-24 21:44:56,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:56,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179958125] [2023-11-24 21:44:56,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:56,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:57,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:57,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179958125] [2023-11-24 21:44:57,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179958125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:57,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:57,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-24 21:44:57,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889291487] [2023-11-24 21:44:57,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:57,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:44:57,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:57,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:44:57,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:44:57,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 80 [2023-11-24 21:44:57,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 121 transitions, 622 flow. Second operand has 10 states, 10 states have (on average 43.8) internal successors, (438), 10 states have internal predecessors, (438), 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) [2023-11-24 21:44:57,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:57,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 80 [2023-11-24 21:44:57,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:01,928 INFO L124 PetriNetUnfolderBase]: 16538/28560 cut-off events. [2023-11-24 21:45:01,928 INFO L125 PetriNetUnfolderBase]: For 21356/21546 co-relation queries the response was YES. [2023-11-24 21:45:02,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76051 conditions, 28560 events. 16538/28560 cut-off events. For 21356/21546 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 231959 event pairs, 4918 based on Foata normal form. 305/28083 useless extension candidates. Maximal degree in co-relation 76020. Up to 12371 conditions per place. [2023-11-24 21:45:02,174 INFO L140 encePairwiseOnDemand]: 66/80 looper letters, 210 selfloop transitions, 108 changer transitions 0/358 dead transitions. [2023-11-24 21:45:02,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 358 transitions, 2211 flow [2023-11-24 21:45:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-24 21:45:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-24 21:45:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 945 transitions. [2023-11-24 21:45:02,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6948529411764706 [2023-11-24 21:45:02,179 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 945 transitions. [2023-11-24 21:45:02,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 945 transitions. [2023-11-24 21:45:02,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:02,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 945 transitions. [2023-11-24 21:45:02,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 55.588235294117645) internal successors, (945), 17 states have internal predecessors, (945), 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) [2023-11-24 21:45:02,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 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) [2023-11-24 21:45:02,187 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 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) [2023-11-24 21:45:02,188 INFO L175 Difference]: Start difference. First operand has 111 places, 121 transitions, 622 flow. Second operand 17 states and 945 transitions. [2023-11-24 21:45:02,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 358 transitions, 2211 flow [2023-11-24 21:45:02,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 358 transitions, 2198 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-24 21:45:02,818 INFO L231 Difference]: Finished difference. Result has 136 places, 207 transitions, 1543 flow [2023-11-24 21:45:02,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1543, PETRI_PLACES=136, PETRI_TRANSITIONS=207} [2023-11-24 21:45:02,820 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 50 predicate places. [2023-11-24 21:45:02,820 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 207 transitions, 1543 flow [2023-11-24 21:45:02,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.8) internal successors, (438), 10 states have internal predecessors, (438), 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) [2023-11-24 21:45:02,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:02,821 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] [2023-11-24 21:45:02,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:45:02,821 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:45:02,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:02,822 INFO L85 PathProgramCache]: Analyzing trace with hash 89686630, now seen corresponding path program 7 times [2023-11-24 21:45:02,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:02,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114405759] [2023-11-24 21:45:02,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:02,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:03,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:03,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114405759] [2023-11-24 21:45:03,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114405759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:03,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:03,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:45:03,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418885953] [2023-11-24 21:45:03,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:03,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:45:03,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:03,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:45:03,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:45:03,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2023-11-24 21:45:03,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 207 transitions, 1543 flow. Second operand has 8 states, 8 states have (on average 46.5) internal successors, (372), 8 states have internal predecessors, (372), 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) [2023-11-24 21:45:03,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:03,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2023-11-24 21:45:03,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:10,353 INFO L124 PetriNetUnfolderBase]: 24460/42681 cut-off events. [2023-11-24 21:45:10,353 INFO L125 PetriNetUnfolderBase]: For 79085/80024 co-relation queries the response was YES. [2023-11-24 21:45:10,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130900 conditions, 42681 events. 24460/42681 cut-off events. For 79085/80024 co-relation queries the response was YES. Maximal size of possible extension queue 1265. Compared 372988 event pairs, 5779 based on Foata normal form. 332/41618 useless extension candidates. Maximal degree in co-relation 130857. Up to 9147 conditions per place. [2023-11-24 21:45:10,890 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 256 selfloop transitions, 92 changer transitions 0/405 dead transitions. [2023-11-24 21:45:10,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 405 transitions, 3417 flow [2023-11-24 21:45:10,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:45:10,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:45:10,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 500 transitions. [2023-11-24 21:45:10,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.78125 [2023-11-24 21:45:10,898 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 500 transitions. [2023-11-24 21:45:10,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 500 transitions. [2023-11-24 21:45:10,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:10,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 500 transitions. [2023-11-24 21:45:10,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 62.5) internal successors, (500), 8 states have internal predecessors, (500), 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) [2023-11-24 21:45:10,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 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) [2023-11-24 21:45:10,909 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 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) [2023-11-24 21:45:10,909 INFO L175 Difference]: Start difference. First operand has 136 places, 207 transitions, 1543 flow. Second operand 8 states and 500 transitions. [2023-11-24 21:45:10,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 405 transitions, 3417 flow [2023-11-24 21:45:12,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 405 transitions, 3270 flow, removed 67 selfloop flow, removed 1 redundant places. [2023-11-24 21:45:12,311 INFO L231 Difference]: Finished difference. Result has 148 places, 253 transitions, 2181 flow [2023-11-24 21:45:12,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2181, PETRI_PLACES=148, PETRI_TRANSITIONS=253} [2023-11-24 21:45:12,312 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 62 predicate places. [2023-11-24 21:45:12,313 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 253 transitions, 2181 flow [2023-11-24 21:45:12,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.5) internal successors, (372), 8 states have internal predecessors, (372), 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) [2023-11-24 21:45:12,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:12,313 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] [2023-11-24 21:45:12,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:45:12,314 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:45:12,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:12,314 INFO L85 PathProgramCache]: Analyzing trace with hash 882472938, now seen corresponding path program 8 times [2023-11-24 21:45:12,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:12,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135575550] [2023-11-24 21:45:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:12,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:12,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:12,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:12,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135575550] [2023-11-24 21:45:12,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135575550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:12,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:12,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:45:12,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520782017] [2023-11-24 21:45:12,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:12,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:45:12,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:12,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:45:12,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:45:12,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 80 [2023-11-24 21:45:12,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 253 transitions, 2181 flow. Second operand has 9 states, 9 states have (on average 46.888888888888886) internal successors, (422), 9 states have internal predecessors, (422), 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) [2023-11-24 21:45:12,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:12,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 80 [2023-11-24 21:45:12,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:22,352 INFO L124 PetriNetUnfolderBase]: 33787/56493 cut-off events. [2023-11-24 21:45:22,352 INFO L125 PetriNetUnfolderBase]: For 127651/129509 co-relation queries the response was YES. [2023-11-24 21:45:22,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181227 conditions, 56493 events. 33787/56493 cut-off events. For 127651/129509 co-relation queries the response was YES. Maximal size of possible extension queue 1469. Compared 486781 event pairs, 11439 based on Foata normal form. 591/55414 useless extension candidates. Maximal degree in co-relation 181176. Up to 15454 conditions per place. [2023-11-24 21:45:23,049 INFO L140 encePairwiseOnDemand]: 72/80 looper letters, 324 selfloop transitions, 23 changer transitions 9/490 dead transitions. [2023-11-24 21:45:23,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 490 transitions, 4418 flow [2023-11-24 21:45:23,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:45:23,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-24 21:45:23,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 652 transitions. [2023-11-24 21:45:23,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.740909090909091 [2023-11-24 21:45:23,054 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 652 transitions. [2023-11-24 21:45:23,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 652 transitions. [2023-11-24 21:45:23,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:23,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 652 transitions. [2023-11-24 21:45:23,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 59.27272727272727) internal successors, (652), 11 states have internal predecessors, (652), 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) [2023-11-24 21:45:23,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 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) [2023-11-24 21:45:23,061 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 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) [2023-11-24 21:45:23,062 INFO L175 Difference]: Start difference. First operand has 148 places, 253 transitions, 2181 flow. Second operand 11 states and 652 transitions. [2023-11-24 21:45:23,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 490 transitions, 4418 flow