./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 9bd2c7ff 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_d1cd22a5-5874-47d1-9f0c-a5f285be2f31/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cd22a5-5874-47d1-9f0c-a5f285be2f31/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cd22a5-5874-47d1-9f0c-a5f285be2f31/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cd22a5-5874-47d1-9f0c-a5f285be2f31/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cd22a5-5874-47d1-9f0c-a5f285be2f31/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cd22a5-5874-47d1-9f0c-a5f285be2f31/bin/uautomizer-verify-uCwYo4JHxu --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 0.2.3-dev-9bd2c7f [2023-11-19 07:48:10,142 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:48:10,223 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cd22a5-5874-47d1-9f0c-a5f285be2f31/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:48:10,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:48:10,229 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:48:10,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:48:10,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:48:10,263 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:48:10,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:48:10,264 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:48:10,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:48:10,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:48:10,266 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:48:10,267 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:48:10,267 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:48:10,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:48:10,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:48:10,269 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:48:10,270 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:48:10,270 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:48:10,271 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:48:10,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:48:10,272 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:48:10,273 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:48:10,273 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:48:10,274 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:48:10,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:48:10,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:48:10,276 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:48:10,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:10,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:48:10,277 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:48:10,278 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:48:10,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:48:10,279 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:48:10,279 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:48:10,280 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:48:10,280 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:48:10,281 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_d1cd22a5-5874-47d1-9f0c-a5f285be2f31/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cd22a5-5874-47d1-9f0c-a5f285be2f31/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 [2023-11-19 07:48:10,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:48:10,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:48:10,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:48:10,674 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:48:10,675 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:48:10,676 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cd22a5-5874-47d1-9f0c-a5f285be2f31/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-19 07:48:13,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:14,048 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:14,049 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cd22a5-5874-47d1-9f0c-a5f285be2f31/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-19 07:48:14,058 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cd22a5-5874-47d1-9f0c-a5f285be2f31/bin/uautomizer-verify-uCwYo4JHxu/data/9759eff18/8878e9e3857e4e10adb83e3a6eb7bf1e/FLAG04c552d33 [2023-11-19 07:48:14,073 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cd22a5-5874-47d1-9f0c-a5f285be2f31/bin/uautomizer-verify-uCwYo4JHxu/data/9759eff18/8878e9e3857e4e10adb83e3a6eb7bf1e [2023-11-19 07:48:14,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:14,077 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:14,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:14,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:14,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:14,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:14" (1/1) ... [2023-11-19 07:48:14,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa373b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:14, skipping insertion in model container [2023-11-19 07:48:14,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:14" (1/1) ... [2023-11-19 07:48:14,115 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:14,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:14,338 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:14,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:14,380 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:48:14,384 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:48:14,392 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:14,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:14 WrapperNode [2023-11-19 07:48:14,393 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:14,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:14,395 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:14,395 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:14,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:14" (1/1) ... [2023-11-19 07:48:14,411 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:14" (1/1) ... [2023-11-19 07:48:14,447 INFO L138 Inliner]: procedures = 22, calls = 111, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 269 [2023-11-19 07:48:14,447 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:14,448 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:14,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:14,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:14,458 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:14" (1/1) ... [2023-11-19 07:48:14,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:14" (1/1) ... [2023-11-19 07:48:14,463 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:14" (1/1) ... [2023-11-19 07:48:14,463 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:14" (1/1) ... [2023-11-19 07:48:14,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:14" (1/1) ... [2023-11-19 07:48:14,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:14" (1/1) ... [2023-11-19 07:48:14,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:14" (1/1) ... [2023-11-19 07:48:14,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:14" (1/1) ... [2023-11-19 07:48:14,484 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:14,485 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:14,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:14,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:14,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:14" (1/1) ... [2023-11-19 07:48:14,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:14,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cd22a5-5874-47d1-9f0c-a5f285be2f31/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:14,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cd22a5-5874-47d1-9f0c-a5f285be2f31/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:14,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1cd22a5-5874-47d1-9f0c-a5f285be2f31/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:48:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:48:14,594 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:48:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:48:14,594 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:48:14,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:48:14,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:48:14,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:48:14,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:48:14,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:48:14,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:48:14,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:48:14,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:14,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:14,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:48:14,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:48:14,598 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:48:14,712 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:14,714 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:15,157 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:15,359 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:15,360 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:48:15,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:15 BoogieIcfgContainer [2023-11-19 07:48:15,368 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:15,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:48:15,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:48:15,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:48:15,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:14" (1/3) ... [2023-11-19 07:48:15,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39155fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:15, skipping insertion in model container [2023-11-19 07:48:15,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:14" (2/3) ... [2023-11-19 07:48:15,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39155fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:15, skipping insertion in model container [2023-11-19 07:48:15,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:15" (3/3) ... [2023-11-19 07:48:15,382 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-11-19 07:48:15,399 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:48:15,399 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-19 07:48:15,399 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:48:15,489 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:48:15,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 180 transitions, 381 flow [2023-11-19 07:48:15,679 INFO L124 PetriNetUnfolderBase]: 2/177 cut-off events. [2023-11-19 07:48:15,679 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:48:15,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 177 events. 2/177 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 166 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-11-19 07:48:15,684 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 180 transitions, 381 flow [2023-11-19 07:48:15,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 172 transitions, 362 flow [2023-11-19 07:48:15,695 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:48:15,705 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 172 transitions, 362 flow [2023-11-19 07:48:15,713 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 172 transitions, 362 flow [2023-11-19 07:48:15,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 172 transitions, 362 flow [2023-11-19 07:48:15,791 INFO L124 PetriNetUnfolderBase]: 2/172 cut-off events. [2023-11-19 07:48:15,792 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:48:15,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 172 events. 2/172 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 165 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-11-19 07:48:15,799 INFO L119 LiptonReduction]: Number of co-enabled transitions 2970 [2023-11-19 07:48:21,823 INFO L134 LiptonReduction]: Checked pairs total: 25069 [2023-11-19 07:48:21,823 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-11-19 07:48:21,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:48:21,845 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;@27dbef9b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:48:21,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 07:48:21,848 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:48:21,848 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:48:21,848 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:21,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:21,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:48:21,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:48:21,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:21,854 INFO L85 PathProgramCache]: Analyzing trace with hash 815, now seen corresponding path program 1 times [2023-11-19 07:48:21,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:21,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912373541] [2023-11-19 07:48:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:21,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:21,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:21,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912373541] [2023-11-19 07:48:21,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912373541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:21,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:21,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:48:21,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808844437] [2023-11-19 07:48:21,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:21,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:48:21,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:22,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:48:22,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:48:22,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 319 [2023-11-19 07:48:22,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 142 flow. Second operand has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:22,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:22,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 319 [2023-11-19 07:48:22,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:23,461 INFO L124 PetriNetUnfolderBase]: 5817/9700 cut-off events. [2023-11-19 07:48:23,461 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2023-11-19 07:48:23,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18368 conditions, 9700 events. 5817/9700 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 66958 event pairs, 5817 based on Foata normal form. 0/8145 useless extension candidates. Maximal degree in co-relation 16752. Up to 8445 conditions per place. [2023-11-19 07:48:23,586 INFO L140 encePairwiseOnDemand]: 316/319 looper letters, 44 selfloop transitions, 0 changer transitions 0/59 dead transitions. [2023-11-19 07:48:23,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 59 transitions, 224 flow [2023-11-19 07:48:23,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:48:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:48:23,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 359 transitions. [2023-11-19 07:48:23,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5626959247648903 [2023-11-19 07:48:23,623 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 359 transitions. [2023-11-19 07:48:23,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 359 transitions. [2023-11-19 07:48:23,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:23,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 359 transitions. [2023-11-19 07:48:23,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 179.5) internal successors, (359), 2 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:23,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:23,651 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:23,653 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 142 flow. Second operand 2 states and 359 transitions. [2023-11-19 07:48:23,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 59 transitions, 224 flow [2023-11-19 07:48:23,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 212 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:48:23,678 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 124 flow [2023-11-19 07:48:23,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2023-11-19 07:48:23,689 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2023-11-19 07:48:23,689 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 124 flow [2023-11-19 07:48:23,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:23,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:23,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:48:23,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:48:23,692 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:48:23,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:23,694 INFO L85 PathProgramCache]: Analyzing trace with hash 804741, now seen corresponding path program 1 times [2023-11-19 07:48:23,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:23,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171723629] [2023-11-19 07:48:23,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:23,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:24,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:24,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171723629] [2023-11-19 07:48:24,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171723629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:24,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:24,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:48:24,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675857044] [2023-11-19 07:48:24,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:24,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:24,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:24,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:24,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:24,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 319 [2023-11-19 07:48:24,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 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) [2023-11-19 07:48:24,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:24,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 319 [2023-11-19 07:48:24,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:25,328 INFO L124 PetriNetUnfolderBase]: 5698/9504 cut-off events. [2023-11-19 07:48:25,328 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-19 07:48:25,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17833 conditions, 9504 events. 5698/9504 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 65461 event pairs, 5698 based on Foata normal form. 0/8021 useless extension candidates. Maximal degree in co-relation 17830. Up to 8253 conditions per place. [2023-11-19 07:48:25,416 INFO L140 encePairwiseOnDemand]: 316/319 looper letters, 41 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-11-19 07:48:25,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 57 transitions, 204 flow [2023-11-19 07:48:25,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:25,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:25,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-11-19 07:48:25,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005224660397074 [2023-11-19 07:48:25,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-11-19 07:48:25,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-11-19 07:48:25,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:25,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-11-19 07:48:25,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:25,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:25,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:25,438 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 124 flow. Second operand 3 states and 479 transitions. [2023-11-19 07:48:25,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 57 transitions, 204 flow [2023-11-19 07:48:25,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 204 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:48:25,441 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 122 flow [2023-11-19 07:48:25,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2023-11-19 07:48:25,443 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2023-11-19 07:48:25,444 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 122 flow [2023-11-19 07:48:25,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 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) [2023-11-19 07:48:25,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:25,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:48:25,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:48:25,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:48:25,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:25,446 INFO L85 PathProgramCache]: Analyzing trace with hash 804740, now seen corresponding path program 1 times [2023-11-19 07:48:25,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:25,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680811373] [2023-11-19 07:48:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:25,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:25,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:25,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680811373] [2023-11-19 07:48:25,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680811373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:25,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:25,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:48:25,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845893213] [2023-11-19 07:48:25,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:25,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:25,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:25,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:25,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:25,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 319 [2023-11-19 07:48:25,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:25,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:25,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 319 [2023-11-19 07:48:25,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:27,016 INFO L124 PetriNetUnfolderBase]: 5579/9308 cut-off events. [2023-11-19 07:48:27,017 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-19 07:48:27,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17448 conditions, 9308 events. 5579/9308 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 64010 event pairs, 5579 based on Foata normal form. 0/7897 useless extension candidates. Maximal degree in co-relation 17444. Up to 8062 conditions per place. [2023-11-19 07:48:27,070 INFO L140 encePairwiseOnDemand]: 316/319 looper letters, 39 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-11-19 07:48:27,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 198 flow [2023-11-19 07:48:27,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:27,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-11-19 07:48:27,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141065830721003 [2023-11-19 07:48:27,073 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-11-19 07:48:27,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-11-19 07:48:27,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:27,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-11-19 07:48:27,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:27,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:27,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:27,080 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 122 flow. Second operand 3 states and 492 transitions. [2023-11-19 07:48:27,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 198 flow [2023-11-19 07:48:27,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 55 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:48:27,085 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 119 flow [2023-11-19 07:48:27,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2023-11-19 07:48:27,087 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -9 predicate places. [2023-11-19 07:48:27,087 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 119 flow [2023-11-19 07:48:27,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:27,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:27,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:48:27,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:48:27,093 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:48:27,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:27,094 INFO L85 PathProgramCache]: Analyzing trace with hash 773377742, now seen corresponding path program 1 times [2023-11-19 07:48:27,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:27,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141821626] [2023-11-19 07:48:27,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:27,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:27,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:27,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141821626] [2023-11-19 07:48:27,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141821626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:27,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:27,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:48:27,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084172796] [2023-11-19 07:48:27,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:27,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:27,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:27,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:27,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:27,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 319 [2023-11-19 07:48:27,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:27,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:27,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 319 [2023-11-19 07:48:27,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:28,410 INFO L124 PetriNetUnfolderBase]: 5460/9091 cut-off events. [2023-11-19 07:48:28,410 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-19 07:48:28,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17041 conditions, 9091 events. 5460/9091 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 62227 event pairs, 5460 based on Foata normal form. 0/7764 useless extension candidates. Maximal degree in co-relation 17037. Up to 7871 conditions per place. [2023-11-19 07:48:28,488 INFO L140 encePairwiseOnDemand]: 316/319 looper letters, 37 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-11-19 07:48:28,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 191 flow [2023-11-19 07:48:28,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:28,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2023-11-19 07:48:28,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49634273772204807 [2023-11-19 07:48:28,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2023-11-19 07:48:28,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2023-11-19 07:48:28,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:28,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2023-11-19 07:48:28,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:28,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:28,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:28,503 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 119 flow. Second operand 3 states and 475 transitions. [2023-11-19 07:48:28,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 191 flow [2023-11-19 07:48:28,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:48:28,508 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 116 flow [2023-11-19 07:48:28,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2023-11-19 07:48:28,511 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -10 predicate places. [2023-11-19 07:48:28,512 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 116 flow [2023-11-19 07:48:28,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:28,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:28,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:48:28,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:48:28,514 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:48:28,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:28,515 INFO L85 PathProgramCache]: Analyzing trace with hash 773377744, now seen corresponding path program 1 times [2023-11-19 07:48:28,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:28,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447880000] [2023-11-19 07:48:28,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:28,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:28,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:28,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447880000] [2023-11-19 07:48:28,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447880000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:28,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:28,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:48:28,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477446749] [2023-11-19 07:48:28,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:28,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:28,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:28,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:28,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:28,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 319 [2023-11-19 07:48:28,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:28,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:28,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 319 [2023-11-19 07:48:28,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:29,689 INFO L124 PetriNetUnfolderBase]: 5341/8874 cut-off events. [2023-11-19 07:48:29,689 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-19 07:48:29,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16634 conditions, 8874 events. 5341/8874 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 60421 event pairs, 5341 based on Foata normal form. 0/7631 useless extension candidates. Maximal degree in co-relation 16630. Up to 7680 conditions per place. [2023-11-19 07:48:29,754 INFO L140 encePairwiseOnDemand]: 316/319 looper letters, 35 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-11-19 07:48:29,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 51 transitions, 184 flow [2023-11-19 07:48:29,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:29,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-11-19 07:48:29,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509926854754441 [2023-11-19 07:48:29,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-11-19 07:48:29,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-11-19 07:48:29,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:29,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-11-19 07:48:29,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:29,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:29,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:29,766 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 116 flow. Second operand 3 states and 488 transitions. [2023-11-19 07:48:29,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 51 transitions, 184 flow [2023-11-19 07:48:29,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 51 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:48:29,770 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 113 flow [2023-11-19 07:48:29,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2023-11-19 07:48:29,773 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-11-19 07:48:29,774 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 113 flow [2023-11-19 07:48:29,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:29,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:29,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:29,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:48:29,775 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:48:29,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:29,776 INFO L85 PathProgramCache]: Analyzing trace with hash 186689419, now seen corresponding path program 1 times [2023-11-19 07:48:29,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:29,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146863434] [2023-11-19 07:48:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:29,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:29,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:29,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146863434] [2023-11-19 07:48:29,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146863434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:29,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:29,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:29,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389500394] [2023-11-19 07:48:29,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:29,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:29,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:29,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:29,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:30,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 319 [2023-11-19 07:48:30,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:30,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:30,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 319 [2023-11-19 07:48:30,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:30,740 INFO L124 PetriNetUnfolderBase]: 3997/6738 cut-off events. [2023-11-19 07:48:30,740 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-19 07:48:30,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12643 conditions, 6738 events. 3997/6738 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 44547 event pairs, 3997 based on Foata normal form. 0/6053 useless extension candidates. Maximal degree in co-relation 12639. Up to 5824 conditions per place. [2023-11-19 07:48:30,792 INFO L140 encePairwiseOnDemand]: 317/319 looper letters, 34 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-11-19 07:48:30,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 50 transitions, 181 flow [2023-11-19 07:48:30,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:30,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-11-19 07:48:30,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670846394984326 [2023-11-19 07:48:30,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-11-19 07:48:30,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-11-19 07:48:30,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:30,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-11-19 07:48:30,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:30,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:30,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:30,808 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 113 flow. Second operand 3 states and 447 transitions. [2023-11-19 07:48:30,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 50 transitions, 181 flow [2023-11-19 07:48:30,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 50 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:48:30,811 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 112 flow [2023-11-19 07:48:30,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-11-19 07:48:30,814 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-11-19 07:48:30,815 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 112 flow [2023-11-19 07:48:30,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:30,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:30,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:30,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:48:30,816 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:48:30,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:30,817 INFO L85 PathProgramCache]: Analyzing trace with hash 186689417, now seen corresponding path program 1 times [2023-11-19 07:48:30,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:30,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10108676] [2023-11-19 07:48:30,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:30,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:30,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:30,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:30,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10108676] [2023-11-19 07:48:30,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10108676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:30,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:30,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:48:30,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133181470] [2023-11-19 07:48:30,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:30,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:30,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:30,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:30,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:30,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 319 [2023-11-19 07:48:30,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:30,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:30,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 319 [2023-11-19 07:48:30,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:31,529 INFO L124 PetriNetUnfolderBase]: 2653/4602 cut-off events. [2023-11-19 07:48:31,529 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-19 07:48:31,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8652 conditions, 4602 events. 2653/4602 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 29417 event pairs, 2653 based on Foata normal form. 0/4475 useless extension candidates. Maximal degree in co-relation 8648. Up to 3968 conditions per place. [2023-11-19 07:48:31,556 INFO L140 encePairwiseOnDemand]: 317/319 looper letters, 33 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-11-19 07:48:31,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 49 transitions, 178 flow [2023-11-19 07:48:31,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:31,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-11-19 07:48:31,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942528735632184 [2023-11-19 07:48:31,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-11-19 07:48:31,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-11-19 07:48:31,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:31,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-11-19 07:48:31,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:31,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:31,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:31,565 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 112 flow. Second operand 3 states and 473 transitions. [2023-11-19 07:48:31,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 49 transitions, 178 flow [2023-11-19 07:48:31,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 49 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:48:31,567 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 111 flow [2023-11-19 07:48:31,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2023-11-19 07:48:31,568 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-11-19 07:48:31,568 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 111 flow [2023-11-19 07:48:31,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:31,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:31,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:31,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:48:31,570 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)] === [2023-11-19 07:48:31,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:31,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1886328451, now seen corresponding path program 1 times [2023-11-19 07:48:31,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:31,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824320362] [2023-11-19 07:48:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:31,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:31,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:31,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824320362] [2023-11-19 07:48:31,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824320362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:31,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:31,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:48:31,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172134198] [2023-11-19 07:48:31,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:31,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:48:31,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:31,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:48:31,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:48:31,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 319 [2023-11-19 07:48:31,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 111 flow. Second operand has 9 states, 9 states have (on average 146.44444444444446) internal successors, (1318), 9 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:31,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:31,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 319 [2023-11-19 07:48:31,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:33,434 INFO L124 PetriNetUnfolderBase]: 6383/9807 cut-off events. [2023-11-19 07:48:33,434 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-19 07:48:33,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19637 conditions, 9807 events. 6383/9807 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 57176 event pairs, 2329 based on Foata normal form. 1/9758 useless extension candidates. Maximal degree in co-relation 19633. Up to 3118 conditions per place. [2023-11-19 07:48:33,496 INFO L140 encePairwiseOnDemand]: 311/319 looper letters, 170 selfloop transitions, 15 changer transitions 26/220 dead transitions. [2023-11-19 07:48:33,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 220 transitions, 901 flow [2023-11-19 07:48:33,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:48:33,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:48:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1774 transitions. [2023-11-19 07:48:33,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505557138785979 [2023-11-19 07:48:33,504 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1774 transitions. [2023-11-19 07:48:33,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1774 transitions. [2023-11-19 07:48:33,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:33,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1774 transitions. [2023-11-19 07:48:33,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 161.27272727272728) internal successors, (1774), 11 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:33,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 319.0) internal successors, (3828), 12 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:33,522 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 319.0) internal successors, (3828), 12 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:33,522 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 111 flow. Second operand 11 states and 1774 transitions. [2023-11-19 07:48:33,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 220 transitions, 901 flow [2023-11-19 07:48:33,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 220 transitions, 900 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:48:33,530 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 202 flow [2023-11-19 07:48:33,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=202, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2023-11-19 07:48:33,533 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2023-11-19 07:48:33,534 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 202 flow [2023-11-19 07:48:33,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.44444444444446) internal successors, (1318), 9 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:33,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:33,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:33,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:48:33,535 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)] === [2023-11-19 07:48:33,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:33,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1566483359, now seen corresponding path program 2 times [2023-11-19 07:48:33,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:33,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717238847] [2023-11-19 07:48:33,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:33,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:34,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:34,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:34,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717238847] [2023-11-19 07:48:34,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717238847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:34,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:34,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:48:34,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169516607] [2023-11-19 07:48:34,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:34,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:48:34,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:34,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:48:34,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:48:34,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 319 [2023-11-19 07:48:34,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 202 flow. Second operand has 9 states, 9 states have (on average 147.33333333333334) internal successors, (1326), 9 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:34,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:34,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 319 [2023-11-19 07:48:34,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:36,312 INFO L124 PetriNetUnfolderBase]: 8140/14209 cut-off events. [2023-11-19 07:48:36,313 INFO L125 PetriNetUnfolderBase]: For 278/282 co-relation queries the response was YES. [2023-11-19 07:48:36,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28777 conditions, 14209 events. 8140/14209 cut-off events. For 278/282 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 104991 event pairs, 1584 based on Foata normal form. 216/14167 useless extension candidates. Maximal degree in co-relation 28769. Up to 7899 conditions per place. [2023-11-19 07:48:36,443 INFO L140 encePairwiseOnDemand]: 307/319 looper letters, 130 selfloop transitions, 36 changer transitions 0/193 dead transitions. [2023-11-19 07:48:36,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 193 transitions, 802 flow [2023-11-19 07:48:36,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:48:36,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:48:36,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1600 transitions. [2023-11-19 07:48:36,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015673981191222 [2023-11-19 07:48:36,452 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1600 transitions. [2023-11-19 07:48:36,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1600 transitions. [2023-11-19 07:48:36,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:36,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1600 transitions. [2023-11-19 07:48:36,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 160.0) internal successors, (1600), 10 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:36,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:36,469 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 319.0) internal successors, (3509), 11 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:36,470 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 202 flow. Second operand 10 states and 1600 transitions. [2023-11-19 07:48:36,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 193 transitions, 802 flow [2023-11-19 07:48:36,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 193 transitions, 798 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-19 07:48:36,486 INFO L231 Difference]: Finished difference. Result has 88 places, 103 transitions, 445 flow [2023-11-19 07:48:36,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=445, PETRI_PLACES=88, PETRI_TRANSITIONS=103} [2023-11-19 07:48:36,487 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 16 predicate places. [2023-11-19 07:48:36,487 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 103 transitions, 445 flow [2023-11-19 07:48:36,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 147.33333333333334) internal successors, (1326), 9 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:36,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:36,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:36,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:48:36,489 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)] === [2023-11-19 07:48:36,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:36,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2095791951, now seen corresponding path program 3 times [2023-11-19 07:48:36,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:36,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799413617] [2023-11-19 07:48:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:36,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:36,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:36,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:36,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799413617] [2023-11-19 07:48:36,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799413617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:36,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:36,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:36,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175120900] [2023-11-19 07:48:36,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:36,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:36,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:36,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:36,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:36,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 319 [2023-11-19 07:48:36,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 103 transitions, 445 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:36,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:36,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 319 [2023-11-19 07:48:36,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:37,931 INFO L124 PetriNetUnfolderBase]: 6471/11722 cut-off events. [2023-11-19 07:48:37,931 INFO L125 PetriNetUnfolderBase]: For 6521/7017 co-relation queries the response was YES. [2023-11-19 07:48:37,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29636 conditions, 11722 events. 6471/11722 cut-off events. For 6521/7017 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 88556 event pairs, 3912 based on Foata normal form. 222/11550 useless extension candidates. Maximal degree in co-relation 29620. Up to 8037 conditions per place. [2023-11-19 07:48:38,032 INFO L140 encePairwiseOnDemand]: 315/319 looper letters, 86 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2023-11-19 07:48:38,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 129 transitions, 712 flow [2023-11-19 07:48:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-11-19 07:48:38,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5329153605015674 [2023-11-19 07:48:38,036 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-11-19 07:48:38,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-11-19 07:48:38,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:38,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-11-19 07:48:38,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:38,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:38,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:38,042 INFO L175 Difference]: Start difference. First operand has 88 places, 103 transitions, 445 flow. Second operand 3 states and 510 transitions. [2023-11-19 07:48:38,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 129 transitions, 712 flow [2023-11-19 07:48:38,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 129 transitions, 712 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:48:38,107 INFO L231 Difference]: Finished difference. Result has 91 places, 101 transitions, 444 flow [2023-11-19 07:48:38,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=444, PETRI_PLACES=91, PETRI_TRANSITIONS=101} [2023-11-19 07:48:38,109 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 19 predicate places. [2023-11-19 07:48:38,109 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 101 transitions, 444 flow [2023-11-19 07:48:38,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:38,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:38,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:38,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:48:38,111 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)] === [2023-11-19 07:48:38,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:38,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1501510189, now seen corresponding path program 4 times [2023-11-19 07:48:38,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:38,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836016748] [2023-11-19 07:48:38,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:38,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:38,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:38,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:38,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836016748] [2023-11-19 07:48:38,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836016748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:38,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:38,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:38,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844769614] [2023-11-19 07:48:38,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:38,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:38,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:38,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:38,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:38,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 319 [2023-11-19 07:48:38,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 101 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:38,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:38,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 319 [2023-11-19 07:48:38,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:39,357 INFO L124 PetriNetUnfolderBase]: 6026/10914 cut-off events. [2023-11-19 07:48:39,357 INFO L125 PetriNetUnfolderBase]: For 7992/8436 co-relation queries the response was YES. [2023-11-19 07:48:39,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28836 conditions, 10914 events. 6026/10914 cut-off events. For 7992/8436 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 81867 event pairs, 3593 based on Foata normal form. 252/10731 useless extension candidates. Maximal degree in co-relation 28818. Up to 6882 conditions per place. [2023-11-19 07:48:39,456 INFO L140 encePairwiseOnDemand]: 315/319 looper letters, 90 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2023-11-19 07:48:39,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 133 transitions, 770 flow [2023-11-19 07:48:39,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:39,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:39,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-11-19 07:48:39,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5329153605015674 [2023-11-19 07:48:39,461 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-11-19 07:48:39,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-11-19 07:48:39,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:39,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-11-19 07:48:39,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:39,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:39,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:39,476 INFO L175 Difference]: Start difference. First operand has 91 places, 101 transitions, 444 flow. Second operand 3 states and 510 transitions. [2023-11-19 07:48:39,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 133 transitions, 770 flow [2023-11-19 07:48:39,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 133 transitions, 764 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:39,529 INFO L231 Difference]: Finished difference. Result has 92 places, 101 transitions, 450 flow [2023-11-19 07:48:39,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=92, PETRI_TRANSITIONS=101} [2023-11-19 07:48:39,530 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2023-11-19 07:48:39,530 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 101 transitions, 450 flow [2023-11-19 07:48:39,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:39,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:39,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:39,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:48:39,532 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)] === [2023-11-19 07:48:39,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:39,533 INFO L85 PathProgramCache]: Analyzing trace with hash -192975383, now seen corresponding path program 5 times [2023-11-19 07:48:39,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:39,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548210097] [2023-11-19 07:48:39,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:39,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:39,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:39,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548210097] [2023-11-19 07:48:39,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548210097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:39,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:39,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:48:39,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169887024] [2023-11-19 07:48:39,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:39,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:48:39,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:39,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:48:39,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:48:39,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 319 [2023-11-19 07:48:39,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 101 transitions, 450 flow. Second operand has 9 states, 9 states have (on average 146.44444444444446) internal successors, (1318), 9 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:39,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:39,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 319 [2023-11-19 07:48:39,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:42,551 INFO L124 PetriNetUnfolderBase]: 11373/18086 cut-off events. [2023-11-19 07:48:42,551 INFO L125 PetriNetUnfolderBase]: For 12034/12357 co-relation queries the response was YES. [2023-11-19 07:48:42,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50838 conditions, 18086 events. 11373/18086 cut-off events. For 12034/12357 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 118078 event pairs, 3711 based on Foata normal form. 157/17975 useless extension candidates. Maximal degree in co-relation 50819. Up to 5545 conditions per place. [2023-11-19 07:48:42,721 INFO L140 encePairwiseOnDemand]: 311/319 looper letters, 247 selfloop transitions, 21 changer transitions 32/320 dead transitions. [2023-11-19 07:48:42,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 320 transitions, 1904 flow [2023-11-19 07:48:42,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:48:42,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:48:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1770 transitions. [2023-11-19 07:48:42,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044172128811627 [2023-11-19 07:48:42,739 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1770 transitions. [2023-11-19 07:48:42,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1770 transitions. [2023-11-19 07:48:42,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:42,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1770 transitions. [2023-11-19 07:48:42,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 160.9090909090909) internal successors, (1770), 11 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:42,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 319.0) internal successors, (3828), 12 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:42,767 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 319.0) internal successors, (3828), 12 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:42,767 INFO L175 Difference]: Start difference. First operand has 92 places, 101 transitions, 450 flow. Second operand 11 states and 1770 transitions. [2023-11-19 07:48:42,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 320 transitions, 1904 flow [2023-11-19 07:48:42,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 320 transitions, 1892 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:42,852 INFO L231 Difference]: Finished difference. Result has 105 places, 110 transitions, 564 flow [2023-11-19 07:48:42,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=564, PETRI_PLACES=105, PETRI_TRANSITIONS=110} [2023-11-19 07:48:42,855 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 33 predicate places. [2023-11-19 07:48:42,855 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 110 transitions, 564 flow [2023-11-19 07:48:42,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.44444444444446) internal successors, (1318), 9 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:42,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:42,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:42,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:48:42,857 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)] === [2023-11-19 07:48:42,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:42,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1685359279, now seen corresponding path program 6 times [2023-11-19 07:48:42,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:42,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618791333] [2023-11-19 07:48:42,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:42,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:43,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:43,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:43,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618791333] [2023-11-19 07:48:43,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618791333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:43,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:43,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:43,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239250179] [2023-11-19 07:48:43,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:43,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:43,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:43,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:43,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:43,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 319 [2023-11-19 07:48:43,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 110 transitions, 564 flow. Second operand has 5 states, 5 states have (on average 153.4) internal successors, (767), 5 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:43,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:43,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 319 [2023-11-19 07:48:43,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:44,861 INFO L124 PetriNetUnfolderBase]: 6270/11646 cut-off events. [2023-11-19 07:48:44,861 INFO L125 PetriNetUnfolderBase]: For 10053/10467 co-relation queries the response was YES. [2023-11-19 07:48:44,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32475 conditions, 11646 events. 6270/11646 cut-off events. For 10053/10467 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 87478 event pairs, 2919 based on Foata normal form. 58/11355 useless extension candidates. Maximal degree in co-relation 32451. Up to 8832 conditions per place. [2023-11-19 07:48:44,970 INFO L140 encePairwiseOnDemand]: 310/319 looper letters, 81 selfloop transitions, 21 changer transitions 0/139 dead transitions. [2023-11-19 07:48:44,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 139 transitions, 858 flow [2023-11-19 07:48:44,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:44,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:48:44,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 813 transitions. [2023-11-19 07:48:44,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509717868338558 [2023-11-19 07:48:44,978 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 813 transitions. [2023-11-19 07:48:44,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 813 transitions. [2023-11-19 07:48:44,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:44,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 813 transitions. [2023-11-19 07:48:44,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.6) internal successors, (813), 5 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:44,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 319.0) internal successors, (1914), 6 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:44,987 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 319.0) internal successors, (1914), 6 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:44,987 INFO L175 Difference]: Start difference. First operand has 105 places, 110 transitions, 564 flow. Second operand 5 states and 813 transitions. [2023-11-19 07:48:44,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 139 transitions, 858 flow [2023-11-19 07:48:45,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 139 transitions, 841 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-19 07:48:45,082 INFO L231 Difference]: Finished difference. Result has 103 places, 108 transitions, 595 flow [2023-11-19 07:48:45,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=595, PETRI_PLACES=103, PETRI_TRANSITIONS=108} [2023-11-19 07:48:45,083 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 31 predicate places. [2023-11-19 07:48:45,083 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 108 transitions, 595 flow [2023-11-19 07:48:45,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.4) internal successors, (767), 5 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:45,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:45,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:45,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:48:45,085 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)] === [2023-11-19 07:48:45,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:45,090 INFO L85 PathProgramCache]: Analyzing trace with hash 970186719, now seen corresponding path program 7 times [2023-11-19 07:48:45,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:45,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741161414] [2023-11-19 07:48:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:45,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:45,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:45,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:45,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741161414] [2023-11-19 07:48:45,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741161414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:45,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:45,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:48:45,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235454955] [2023-11-19 07:48:45,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:45,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:48:45,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:45,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:48:45,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:45,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 319 [2023-11-19 07:48:45,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 108 transitions, 595 flow. Second operand has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:45,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:45,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 319 [2023-11-19 07:48:45,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:47,477 INFO L124 PetriNetUnfolderBase]: 9162/16532 cut-off events. [2023-11-19 07:48:47,477 INFO L125 PetriNetUnfolderBase]: For 16414/16913 co-relation queries the response was YES. [2023-11-19 07:48:47,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45846 conditions, 16532 events. 9162/16532 cut-off events. For 16414/16913 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 126208 event pairs, 3005 based on Foata normal form. 178/16402 useless extension candidates. Maximal degree in co-relation 45823. Up to 10333 conditions per place. [2023-11-19 07:48:47,629 INFO L140 encePairwiseOnDemand]: 307/319 looper letters, 129 selfloop transitions, 27 changer transitions 0/191 dead transitions. [2023-11-19 07:48:47,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 191 transitions, 1198 flow [2023-11-19 07:48:47,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:47,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:48:47,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1121 transitions. [2023-11-19 07:48:47,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020152261531572 [2023-11-19 07:48:47,635 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1121 transitions. [2023-11-19 07:48:47,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1121 transitions. [2023-11-19 07:48:47,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:47,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1121 transitions. [2023-11-19 07:48:47,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:47,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 319.0) internal successors, (2552), 8 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:47,647 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 319.0) internal successors, (2552), 8 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:47,647 INFO L175 Difference]: Start difference. First operand has 103 places, 108 transitions, 595 flow. Second operand 7 states and 1121 transitions. [2023-11-19 07:48:47,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 191 transitions, 1198 flow [2023-11-19 07:48:47,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 191 transitions, 1170 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:48:47,804 INFO L231 Difference]: Finished difference. Result has 110 places, 127 transitions, 751 flow [2023-11-19 07:48:47,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=751, PETRI_PLACES=110, PETRI_TRANSITIONS=127} [2023-11-19 07:48:47,805 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 38 predicate places. [2023-11-19 07:48:47,805 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 127 transitions, 751 flow [2023-11-19 07:48:47,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:47,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:47,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:47,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:48:47,815 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:48:47,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2043451869, now seen corresponding path program 8 times [2023-11-19 07:48:47,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:47,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641748290] [2023-11-19 07:48:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:47,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:48,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:48,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641748290] [2023-11-19 07:48:48,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641748290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:48,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:48,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:48:48,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108830471] [2023-11-19 07:48:48,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:48,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:48:48,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:48,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:48:48,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:48:48,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 319 [2023-11-19 07:48:48,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 127 transitions, 751 flow. Second operand has 9 states, 9 states have (on average 146.33333333333334) internal successors, (1317), 9 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:48,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:48,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 319 [2023-11-19 07:48:48,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:51,165 INFO L124 PetriNetUnfolderBase]: 10472/18774 cut-off events. [2023-11-19 07:48:51,165 INFO L125 PetriNetUnfolderBase]: For 27116/28078 co-relation queries the response was YES. [2023-11-19 07:48:51,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57232 conditions, 18774 events. 10472/18774 cut-off events. For 27116/28078 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 145286 event pairs, 3633 based on Foata normal form. 334/18794 useless extension candidates. Maximal degree in co-relation 57205. Up to 12103 conditions per place. [2023-11-19 07:48:51,344 INFO L140 encePairwiseOnDemand]: 307/319 looper letters, 147 selfloop transitions, 32 changer transitions 4/218 dead transitions. [2023-11-19 07:48:51,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 218 transitions, 1485 flow [2023-11-19 07:48:51,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:48:51,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:48:51,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1425 transitions. [2023-11-19 07:48:51,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49634273772204807 [2023-11-19 07:48:51,357 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1425 transitions. [2023-11-19 07:48:51,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1425 transitions. [2023-11-19 07:48:51,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:51,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1425 transitions. [2023-11-19 07:48:51,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 158.33333333333334) internal successors, (1425), 9 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:51,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:51,372 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:51,373 INFO L175 Difference]: Start difference. First operand has 110 places, 127 transitions, 751 flow. Second operand 9 states and 1425 transitions. [2023-11-19 07:48:51,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 218 transitions, 1485 flow [2023-11-19 07:48:51,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 218 transitions, 1451 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-11-19 07:48:51,627 INFO L231 Difference]: Finished difference. Result has 122 places, 138 transitions, 900 flow [2023-11-19 07:48:51,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=900, PETRI_PLACES=122, PETRI_TRANSITIONS=138} [2023-11-19 07:48:51,628 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 50 predicate places. [2023-11-19 07:48:51,628 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 138 transitions, 900 flow [2023-11-19 07:48:51,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.33333333333334) internal successors, (1317), 9 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:51,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:51,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:51,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:48:51,630 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:48:51,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:51,630 INFO L85 PathProgramCache]: Analyzing trace with hash 591185877, now seen corresponding path program 9 times [2023-11-19 07:48:51,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:51,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254680712] [2023-11-19 07:48:51,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:51,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:52,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:52,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:52,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254680712] [2023-11-19 07:48:52,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254680712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:52,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:52,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:48:52,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577659694] [2023-11-19 07:48:52,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:52,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:48:52,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:52,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:48:52,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:48:52,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 319 [2023-11-19 07:48:52,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 138 transitions, 900 flow. Second operand has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:52,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:52,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 319 [2023-11-19 07:48:52,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:55,929 INFO L124 PetriNetUnfolderBase]: 12925/22560 cut-off events. [2023-11-19 07:48:55,929 INFO L125 PetriNetUnfolderBase]: For 40795/41863 co-relation queries the response was YES. [2023-11-19 07:48:56,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72053 conditions, 22560 events. 12925/22560 cut-off events. For 40795/41863 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 174170 event pairs, 5231 based on Foata normal form. 210/22337 useless extension candidates. Maximal degree in co-relation 72021. Up to 15937 conditions per place. [2023-11-19 07:48:56,118 INFO L140 encePairwiseOnDemand]: 306/319 looper letters, 161 selfloop transitions, 30 changer transitions 2/227 dead transitions. [2023-11-19 07:48:56,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 227 transitions, 1660 flow [2023-11-19 07:48:56,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:48:56,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:48:56,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1264 transitions. [2023-11-19 07:48:56,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4952978056426332 [2023-11-19 07:48:56,124 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1264 transitions. [2023-11-19 07:48:56,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1264 transitions. [2023-11-19 07:48:56,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:56,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1264 transitions. [2023-11-19 07:48:56,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:56,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 319.0) internal successors, (2871), 9 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:56,135 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 319.0) internal successors, (2871), 9 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:56,135 INFO L175 Difference]: Start difference. First operand has 122 places, 138 transitions, 900 flow. Second operand 8 states and 1264 transitions. [2023-11-19 07:48:56,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 227 transitions, 1660 flow [2023-11-19 07:48:56,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 227 transitions, 1619 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-19 07:48:56,524 INFO L231 Difference]: Finished difference. Result has 131 places, 160 transitions, 1100 flow [2023-11-19 07:48:56,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1100, PETRI_PLACES=131, PETRI_TRANSITIONS=160} [2023-11-19 07:48:56,525 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 59 predicate places. [2023-11-19 07:48:56,525 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 160 transitions, 1100 flow [2023-11-19 07:48:56,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:56,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:56,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:56,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:48:56,526 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-19 07:48:56,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:56,527 INFO L85 PathProgramCache]: Analyzing trace with hash -562699315, now seen corresponding path program 10 times [2023-11-19 07:48:56,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:56,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816924773] [2023-11-19 07:48:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:56,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:56,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:56,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:56,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816924773] [2023-11-19 07:48:56,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816924773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:56,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:56,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:48:56,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819476414] [2023-11-19 07:48:56,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:56,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:48:56,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:56,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:48:56,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:57,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 319 [2023-11-19 07:48:57,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 160 transitions, 1100 flow. Second operand has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:57,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:57,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 319 [2023-11-19 07:48:57,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand