./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix053.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 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_36b8e7b3-da31-44c7-bf43-a8dc345435ff/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b8e7b3-da31-44c7-bf43-a8dc345435ff/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b8e7b3-da31-44c7-bf43-a8dc345435ff/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b8e7b3-da31-44c7-bf43-a8dc345435ff/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix053.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b8e7b3-da31-44c7-bf43-a8dc345435ff/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b8e7b3-da31-44c7-bf43-a8dc345435ff/bin/uautomizer-verify-zZY32mL2XJ --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 998817f829569afa1d1e3eda89c2594d280c8ae81957c207a6b68804966cf3a6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:23:29,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:23:29,455 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b8e7b3-da31-44c7-bf43-a8dc345435ff/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-23 22:23:29,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:23:29,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:23:29,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:23:29,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:23:29,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:23:29,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:23:29,490 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:23:29,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:23:29,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:23:29,492 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:23:29,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:23:29,493 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:23:29,493 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:23:29,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:23:29,495 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:23:29,495 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 22:23:29,496 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 22:23:29,496 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 22:23:29,504 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:23:29,504 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 22:23:29,504 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:23:29,505 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:23:29,505 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:23:29,506 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:23:29,506 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:23:29,506 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:23:29,507 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:23:29,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:23:29,508 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:23:29,508 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:23:29,508 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:23:29,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:23:29,509 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:23:29,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:23:29,510 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:23:29,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:23:29,511 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_36b8e7b3-da31-44c7-bf43-a8dc345435ff/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b8e7b3-da31-44c7-bf43-a8dc345435ff/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 998817f829569afa1d1e3eda89c2594d280c8ae81957c207a6b68804966cf3a6 [2023-11-23 22:23:29,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:23:29,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:23:29,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:23:29,916 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:23:29,916 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:23:29,917 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b8e7b3-da31-44c7-bf43-a8dc345435ff/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-wmm/mix053.opt.i [2023-11-23 22:23:33,006 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:23:33,380 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:23:33,381 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b8e7b3-da31-44c7-bf43-a8dc345435ff/sv-benchmarks/c/pthread-wmm/mix053.opt.i [2023-11-23 22:23:33,399 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b8e7b3-da31-44c7-bf43-a8dc345435ff/bin/uautomizer-verify-zZY32mL2XJ/data/f26a0c2db/5119c21a05834d21aeb38333f24a3c81/FLAGb8219347c [2023-11-23 22:23:33,420 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b8e7b3-da31-44c7-bf43-a8dc345435ff/bin/uautomizer-verify-zZY32mL2XJ/data/f26a0c2db/5119c21a05834d21aeb38333f24a3c81 [2023-11-23 22:23:33,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:23:33,429 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:23:33,435 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:23:33,436 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:23:33,442 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:23:33,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:23:33" (1/1) ... [2023-11-23 22:23:33,446 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d7d531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:33, skipping insertion in model container [2023-11-23 22:23:33,446 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:23:33" (1/1) ... [2023-11-23 22:23:33,519 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:23:33,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:23:33,985 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:23:34,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:23:34,129 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:23:34,129 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:23:34,137 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:23:34,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34 WrapperNode [2023-11-23 22:23:34,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:23:34,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:23:34,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:23:34,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:23:34,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,166 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,198 INFO L138 Inliner]: procedures = 177, calls = 68, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 148 [2023-11-23 22:23:34,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:23:34,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:23:34,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:23:34,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:23:34,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,216 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,232 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,238 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,246 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:23:34,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:23:34,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:23:34,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:23:34,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:23:34,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b8e7b3-da31-44c7-bf43-a8dc345435ff/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:23:34,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b8e7b3-da31-44c7-bf43-a8dc345435ff/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:23:34,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b8e7b3-da31-44c7-bf43-a8dc345435ff/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:23:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 22:23:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 22:23:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:23:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:23:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:23:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-23 22:23:34,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-23 22:23:34,343 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-23 22:23:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-23 22:23:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-23 22:23:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-23 22:23:34,344 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-23 22:23:34,344 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-23 22:23:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 22:23:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 22:23:34,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:23:34,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:23:34,347 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:23:34,506 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:23:34,508 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:23:34,960 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:23:35,255 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:23:35,255 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:23:35,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:23:35 BoogieIcfgContainer [2023-11-23 22:23:35,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:23:35,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:23:35,261 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:23:35,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:23:35,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:23:33" (1/3) ... [2023-11-23 22:23:35,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5109a0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:23:35, skipping insertion in model container [2023-11-23 22:23:35,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (2/3) ... [2023-11-23 22:23:35,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5109a0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:23:35, skipping insertion in model container [2023-11-23 22:23:35,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:23:35" (3/3) ... [2023-11-23 22:23:35,269 INFO L112 eAbstractionObserver]: Analyzing ICFG mix053.opt.i [2023-11-23 22:23:35,292 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:23:35,292 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-23 22:23:35,293 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:23:35,372 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:23:35,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 65 transitions, 146 flow [2023-11-23 22:23:35,483 INFO L124 PetriNetUnfolderBase]: 2/61 cut-off events. [2023-11-23 22:23:35,484 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:23:35,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 61 events. 2/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2023-11-23 22:23:35,489 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 65 transitions, 146 flow [2023-11-23 22:23:35,494 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 61 transitions, 134 flow [2023-11-23 22:23:35,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:23:35,514 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;@615dc9cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:23:35,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-23 22:23:35,549 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:23:35,549 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-23 22:23:35,550 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:23:35,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:35,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-23 22:23:35,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:23:35,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:35,558 INFO L85 PathProgramCache]: Analyzing trace with hash 12921, now seen corresponding path program 1 times [2023-11-23 22:23:35,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:35,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241597100] [2023-11-23 22:23:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:35,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:35,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:35,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241597100] [2023-11-23 22:23:35,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241597100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:35,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:35,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:23:35,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459933007] [2023-11-23 22:23:35,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:35,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:23:35,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:36,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:23:36,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:23:36,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 65 [2023-11-23 22:23:36,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:36,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:36,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 65 [2023-11-23 22:23:36,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:36,892 INFO L124 PetriNetUnfolderBase]: 1175/2175 cut-off events. [2023-11-23 22:23:36,892 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-23 22:23:36,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3912 conditions, 2175 events. 1175/2175 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 17078 event pairs, 879 based on Foata normal form. 120/2110 useless extension candidates. Maximal degree in co-relation 3897. Up to 1277 conditions per place. [2023-11-23 22:23:36,930 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 30 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-23 22:23:36,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 65 transitions, 206 flow [2023-11-23 22:23:36,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:36,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-23 22:23:36,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7487179487179487 [2023-11-23 22:23:36,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-23 22:23:36,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-23 22:23:36,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:36,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-23 22:23:36,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:36,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:36,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:36,969 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 134 flow. Second operand 3 states and 146 transitions. [2023-11-23 22:23:36,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 65 transitions, 206 flow [2023-11-23 22:23:36,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 65 transitions, 202 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 22:23:36,981 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 126 flow [2023-11-23 22:23:36,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-11-23 22:23:36,988 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2023-11-23 22:23:36,988 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 126 flow [2023-11-23 22:23:36,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:36,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:36,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-23 22:23:36,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:23:36,990 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:23:36,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:36,991 INFO L85 PathProgramCache]: Analyzing trace with hash 12922, now seen corresponding path program 1 times [2023-11-23 22:23:36,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:36,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955875771] [2023-11-23 22:23:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:36,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:37,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:37,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:37,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955875771] [2023-11-23 22:23:37,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955875771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:37,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:37,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:23:37,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127668683] [2023-11-23 22:23:37,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:37,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:23:37,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:37,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:23:37,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:23:37,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 65 [2023-11-23 22:23:37,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:37,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 65 [2023-11-23 22:23:37,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:37,668 INFO L124 PetriNetUnfolderBase]: 1175/2174 cut-off events. [2023-11-23 22:23:37,669 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-23 22:23:37,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3968 conditions, 2174 events. 1175/2174 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 17010 event pairs, 879 based on Foata normal form. 1/1990 useless extension candidates. Maximal degree in co-relation 3957. Up to 1276 conditions per place. [2023-11-23 22:23:37,697 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 29 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-11-23 22:23:37,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 202 flow [2023-11-23 22:23:37,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:37,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:37,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-23 22:23:37,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7487179487179487 [2023-11-23 22:23:37,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-23 22:23:37,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-23 22:23:37,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:37,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-23 22:23:37,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,703 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,703 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 126 flow. Second operand 3 states and 146 transitions. [2023-11-23 22:23:37,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 202 flow [2023-11-23 22:23:37,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 64 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:23:37,710 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 124 flow [2023-11-23 22:23:37,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-11-23 22:23:37,711 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2023-11-23 22:23:37,711 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 124 flow [2023-11-23 22:23:37,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:37,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 22:23:37,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:23:37,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:23:37,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:37,713 INFO L85 PathProgramCache]: Analyzing trace with hash 385334006, now seen corresponding path program 1 times [2023-11-23 22:23:37,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:37,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296869443] [2023-11-23 22:23:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:37,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:37,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:37,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296869443] [2023-11-23 22:23:37,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296869443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:37,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:37,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:23:37,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130672577] [2023-11-23 22:23:37,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:37,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:23:37,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:37,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:23:37,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:23:37,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 65 [2023-11-23 22:23:37,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:37,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:37,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 65 [2023-11-23 22:23:37,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:38,245 INFO L124 PetriNetUnfolderBase]: 1176/2173 cut-off events. [2023-11-23 22:23:38,245 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-23 22:23:38,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3970 conditions, 2173 events. 1176/2173 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 16949 event pairs, 742 based on Foata normal form. 0/1992 useless extension candidates. Maximal degree in co-relation 3959. Up to 1276 conditions per place. [2023-11-23 22:23:38,270 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 30 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-23 22:23:38,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 63 transitions, 202 flow [2023-11-23 22:23:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:38,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:38,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-23 22:23:38,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7384615384615385 [2023-11-23 22:23:38,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-23 22:23:38,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-23 22:23:38,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:38,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-23 22:23:38,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:38,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:38,279 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:38,279 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 124 flow. Second operand 3 states and 144 transitions. [2023-11-23 22:23:38,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 63 transitions, 202 flow [2023-11-23 22:23:38,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:23:38,285 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 122 flow [2023-11-23 22:23:38,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2023-11-23 22:23:38,286 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-11-23 22:23:38,287 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 122 flow [2023-11-23 22:23:38,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:38,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:38,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 22:23:38,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:23:38,288 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:23:38,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:38,289 INFO L85 PathProgramCache]: Analyzing trace with hash 385334007, now seen corresponding path program 1 times [2023-11-23 22:23:38,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:38,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444973597] [2023-11-23 22:23:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:38,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:38,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:38,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444973597] [2023-11-23 22:23:38,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444973597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:38,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:38,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:23:38,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837055525] [2023-11-23 22:23:38,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:38,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:23:38,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:38,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:23:38,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:23:38,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 65 [2023-11-23 22:23:38,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:38,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:38,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 65 [2023-11-23 22:23:38,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:38,847 INFO L124 PetriNetUnfolderBase]: 1175/2170 cut-off events. [2023-11-23 22:23:38,847 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-11-23 22:23:38,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3965 conditions, 2170 events. 1175/2170 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 16861 event pairs, 742 based on Foata normal form. 2/1992 useless extension candidates. Maximal degree in co-relation 3955. Up to 1273 conditions per place. [2023-11-23 22:23:38,868 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 29 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-23 22:23:38,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 198 flow [2023-11-23 22:23:38,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:38,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-23 22:23:38,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7487179487179487 [2023-11-23 22:23:38,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-23 22:23:38,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-23 22:23:38,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:38,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-23 22:23:38,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:38,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:38,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:38,875 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 122 flow. Second operand 3 states and 146 transitions. [2023-11-23 22:23:38,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 198 flow [2023-11-23 22:23:38,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 62 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:23:38,882 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 120 flow [2023-11-23 22:23:38,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2023-11-23 22:23:38,884 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-11-23 22:23:38,885 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 120 flow [2023-11-23 22:23:38,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:38,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:38,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:38,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:23:38,886 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:23:38,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:38,886 INFO L85 PathProgramCache]: Analyzing trace with hash -961801491, now seen corresponding path program 1 times [2023-11-23 22:23:38,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:38,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942314608] [2023-11-23 22:23:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:38,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:38,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:38,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:38,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942314608] [2023-11-23 22:23:38,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942314608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:38,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:38,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:23:38,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045314972] [2023-11-23 22:23:38,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:38,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:23:38,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:38,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:23:38,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:23:39,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 65 [2023-11-23 22:23:39,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:39,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:39,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 65 [2023-11-23 22:23:39,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:39,470 INFO L124 PetriNetUnfolderBase]: 1179/2163 cut-off events. [2023-11-23 22:23:39,470 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-11-23 22:23:39,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3966 conditions, 2163 events. 1179/2163 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 16859 event pairs, 880 based on Foata normal form. 0/1995 useless extension candidates. Maximal degree in co-relation 3956. Up to 1272 conditions per place. [2023-11-23 22:23:39,494 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 30 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-23 22:23:39,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 198 flow [2023-11-23 22:23:39,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:39,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-23 22:23:39,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7384615384615385 [2023-11-23 22:23:39,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-23 22:23:39,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-23 22:23:39,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:39,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-23 22:23:39,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:39,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:39,505 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:39,506 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 120 flow. Second operand 3 states and 144 transitions. [2023-11-23 22:23:39,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 198 flow [2023-11-23 22:23:39,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:23:39,513 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 118 flow [2023-11-23 22:23:39,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-11-23 22:23:39,516 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2023-11-23 22:23:39,516 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 118 flow [2023-11-23 22:23:39,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:39,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:39,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:39,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:23:39,518 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:23:39,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:39,519 INFO L85 PathProgramCache]: Analyzing trace with hash -961801490, now seen corresponding path program 1 times [2023-11-23 22:23:39,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:39,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076180728] [2023-11-23 22:23:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:39,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:39,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:39,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076180728] [2023-11-23 22:23:39,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076180728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:39,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:39,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:23:39,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174255817] [2023-11-23 22:23:39,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:39,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:23:39,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:39,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:23:39,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:23:39,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 65 [2023-11-23 22:23:39,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:39,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:39,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 65 [2023-11-23 22:23:39,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:40,064 INFO L124 PetriNetUnfolderBase]: 1175/2159 cut-off events. [2023-11-23 22:23:40,064 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-23 22:23:40,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3956 conditions, 2159 events. 1175/2159 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 17117 event pairs, 876 based on Foata normal form. 4/1995 useless extension candidates. Maximal degree in co-relation 3946. Up to 1264 conditions per place. [2023-11-23 22:23:40,084 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 29 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-23 22:23:40,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 194 flow [2023-11-23 22:23:40,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:40,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-23 22:23:40,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7487179487179487 [2023-11-23 22:23:40,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-23 22:23:40,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-23 22:23:40,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:40,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-23 22:23:40,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:40,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:40,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:40,088 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 118 flow. Second operand 3 states and 146 transitions. [2023-11-23 22:23:40,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 194 flow [2023-11-23 22:23:40,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:23:40,094 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 116 flow [2023-11-23 22:23:40,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-11-23 22:23:40,097 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -9 predicate places. [2023-11-23 22:23:40,098 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 116 flow [2023-11-23 22:23:40,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:40,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:40,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:40,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:23:40,099 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:23:40,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:40,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1300981319, now seen corresponding path program 1 times [2023-11-23 22:23:40,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:40,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361616962] [2023-11-23 22:23:40,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:40,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:40,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:40,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361616962] [2023-11-23 22:23:40,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361616962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:40,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:40,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:23:40,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382123023] [2023-11-23 22:23:40,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:40,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:23:40,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:40,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:23:40,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:23:40,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 65 [2023-11-23 22:23:40,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:40,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:40,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 65 [2023-11-23 22:23:40,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:40,602 INFO L124 PetriNetUnfolderBase]: 1175/2150 cut-off events. [2023-11-23 22:23:40,602 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-23 22:23:40,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3947 conditions, 2150 events. 1175/2150 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 16368 event pairs, 459 based on Foata normal form. 12/2011 useless extension candidates. Maximal degree in co-relation 3937. Up to 1232 conditions per place. [2023-11-23 22:23:40,627 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 29 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-11-23 22:23:40,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 192 flow [2023-11-23 22:23:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:40,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:40,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-23 22:23:40,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7487179487179487 [2023-11-23 22:23:40,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-23 22:23:40,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-23 22:23:40,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:40,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-23 22:23:40,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:40,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:40,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:40,632 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 116 flow. Second operand 3 states and 146 transitions. [2023-11-23 22:23:40,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 192 flow [2023-11-23 22:23:40,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:23:40,638 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 114 flow [2023-11-23 22:23:40,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-11-23 22:23:40,640 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -10 predicate places. [2023-11-23 22:23:40,640 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 114 flow [2023-11-23 22:23:40,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:40,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:40,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:40,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:23:40,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:23:40,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:40,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1300981320, now seen corresponding path program 1 times [2023-11-23 22:23:40,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:40,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011079835] [2023-11-23 22:23:40,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:40,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:40,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011079835] [2023-11-23 22:23:40,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011079835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:40,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:40,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:23:40,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388539349] [2023-11-23 22:23:40,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:40,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:23:40,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:40,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:23:40,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:23:40,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 65 [2023-11-23 22:23:40,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:40,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:40,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 65 [2023-11-23 22:23:40,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:41,085 INFO L124 PetriNetUnfolderBase]: 1195/2158 cut-off events. [2023-11-23 22:23:41,085 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-23 22:23:41,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3995 conditions, 2158 events. 1195/2158 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 16382 event pairs, 459 based on Foata normal form. 0/2009 useless extension candidates. Maximal degree in co-relation 3985. Up to 1264 conditions per place. [2023-11-23 22:23:41,103 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 30 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-23 22:23:41,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 192 flow [2023-11-23 22:23:41,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:41,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-23 22:23:41,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7384615384615385 [2023-11-23 22:23:41,105 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-23 22:23:41,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-23 22:23:41,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:41,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-23 22:23:41,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,107 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 114 flow. Second operand 3 states and 144 transitions. [2023-11-23 22:23:41,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 192 flow [2023-11-23 22:23:41,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:23:41,110 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 112 flow [2023-11-23 22:23:41,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-11-23 22:23:41,111 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-11-23 22:23:41,111 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 112 flow [2023-11-23 22:23:41,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:41,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:41,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 22:23:41,112 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P3Err0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:23:41,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash 250786631, now seen corresponding path program 1 times [2023-11-23 22:23:41,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:41,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321139427] [2023-11-23 22:23:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:41,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:41,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:41,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321139427] [2023-11-23 22:23:41,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321139427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:41,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:41,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:23:41,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082740820] [2023-11-23 22:23:41,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:41,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:23:41,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:41,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:23:41,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:23:41,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 65 [2023-11-23 22:23:41,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:41,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 65 [2023-11-23 22:23:41,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:41,541 INFO L124 PetriNetUnfolderBase]: 931/1678 cut-off events. [2023-11-23 22:23:41,541 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-23 22:23:41,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3131 conditions, 1678 events. 931/1678 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 11988 event pairs, 199 based on Foata normal form. 0/1649 useless extension candidates. Maximal degree in co-relation 3121. Up to 1021 conditions per place. [2023-11-23 22:23:41,554 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 29 selfloop transitions, 2 changer transitions 2/60 dead transitions. [2023-11-23 22:23:41,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 60 transitions, 200 flow [2023-11-23 22:23:41,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:41,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-23 22:23:41,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7743589743589744 [2023-11-23 22:23:41,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-23 22:23:41,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-23 22:23:41,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:41,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-23 22:23:41,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,558 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 112 flow. Second operand 3 states and 151 transitions. [2023-11-23 22:23:41,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 60 transitions, 200 flow [2023-11-23 22:23:41,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 60 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:23:41,560 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 108 flow [2023-11-23 22:23:41,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2023-11-23 22:23:41,561 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -12 predicate places. [2023-11-23 22:23:41,561 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 108 flow [2023-11-23 22:23:41,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:41,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:41,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:41,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 22:23:41,562 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:23:41,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:41,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1894899788, now seen corresponding path program 1 times [2023-11-23 22:23:41,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:41,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695570107] [2023-11-23 22:23:41,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:41,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:42,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:42,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695570107] [2023-11-23 22:23:42,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695570107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:42,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:42,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 22:23:42,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979494181] [2023-11-23 22:23:42,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:42,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 22:23:42,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:42,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 22:23:42,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:23:42,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 65 [2023-11-23 22:23:42,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 108 flow. Second operand has 9 states, 9 states have (on average 34.77777777777778) internal successors, (313), 9 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) [2023-11-23 22:23:42,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:42,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 65 [2023-11-23 22:23:42,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:43,216 INFO L124 PetriNetUnfolderBase]: 819/1494 cut-off events. [2023-11-23 22:23:43,216 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-11-23 22:23:43,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2817 conditions, 1494 events. 819/1494 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10110 event pairs, 528 based on Foata normal form. 48/1517 useless extension candidates. Maximal degree in co-relation 2805. Up to 980 conditions per place. [2023-11-23 22:23:43,229 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 25 selfloop transitions, 4 changer transitions 8/61 dead transitions. [2023-11-23 22:23:43,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 210 flow [2023-11-23 22:23:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:23:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 22:23:43,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 269 transitions. [2023-11-23 22:23:43,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5912087912087912 [2023-11-23 22:23:43,232 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 269 transitions. [2023-11-23 22:23:43,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 269 transitions. [2023-11-23 22:23:43,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:43,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 269 transitions. [2023-11-23 22:23:43,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 38.42857142857143) internal successors, (269), 7 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:43,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:43,236 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:43,236 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 108 flow. Second operand 7 states and 269 transitions. [2023-11-23 22:23:43,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 210 flow [2023-11-23 22:23:43,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:23:43,239 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 108 flow [2023-11-23 22:23:43,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=108, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-11-23 22:23:43,241 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -10 predicate places. [2023-11-23 22:23:43,241 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 108 flow [2023-11-23 22:23:43,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.77777777777778) internal successors, (313), 9 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) [2023-11-23 22:23:43,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:43,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:43,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 22:23:43,242 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:23:43,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:43,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1894898538, now seen corresponding path program 1 times [2023-11-23 22:23:43,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:43,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15628893] [2023-11-23 22:23:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:43,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:43,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:43,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15628893] [2023-11-23 22:23:43,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15628893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:43,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:43,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:23:43,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907499344] [2023-11-23 22:23:43,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:43,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:23:43,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:43,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:23:43,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:23:43,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 65 [2023-11-23 22:23:43,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:43,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:43,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 65 [2023-11-23 22:23:43,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:46,543 INFO L124 PetriNetUnfolderBase]: 12981/19959 cut-off events. [2023-11-23 22:23:46,543 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-11-23 22:23:46,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38072 conditions, 19959 events. 12981/19959 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 1219. Compared 154459 event pairs, 2970 based on Foata normal form. 0/19324 useless extension candidates. Maximal degree in co-relation 38061. Up to 6477 conditions per place. [2023-11-23 22:23:46,672 INFO L140 encePairwiseOnDemand]: 54/65 looper letters, 40 selfloop transitions, 7 changer transitions 79/145 dead transitions. [2023-11-23 22:23:46,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 145 transitions, 566 flow [2023-11-23 22:23:46,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 22:23:46,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-23 22:23:46,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 416 transitions. [2023-11-23 22:23:46,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2023-11-23 22:23:46,675 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 416 transitions. [2023-11-23 22:23:46,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 416 transitions. [2023-11-23 22:23:46,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:46,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 416 transitions. [2023-11-23 22:23:46,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 46.22222222222222) internal successors, (416), 9 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:46,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 65.0) internal successors, (650), 10 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:46,679 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 65.0) internal successors, (650), 10 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:46,679 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 108 flow. Second operand 9 states and 416 transitions. [2023-11-23 22:23:46,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 145 transitions, 566 flow [2023-11-23 22:23:46,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 145 transitions, 556 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 22:23:46,683 INFO L231 Difference]: Finished difference. Result has 72 places, 51 transitions, 197 flow [2023-11-23 22:23:46,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=197, PETRI_PLACES=72, PETRI_TRANSITIONS=51} [2023-11-23 22:23:46,684 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-11-23 22:23:46,684 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 51 transitions, 197 flow [2023-11-23 22:23:46,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:46,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:46,685 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] [2023-11-23 22:23:46,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 22:23:46,685 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:23:46,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:46,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1316577643, now seen corresponding path program 1 times [2023-11-23 22:23:46,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:46,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993755707] [2023-11-23 22:23:46,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:46,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:46,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:46,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:46,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993755707] [2023-11-23 22:23:46,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993755707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:46,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:46,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:23:46,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180315853] [2023-11-23 22:23:46,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:46,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:23:46,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:46,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:23:46,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:23:46,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 65 [2023-11-23 22:23:46,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 51 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:46,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:46,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 65 [2023-11-23 22:23:46,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:49,398 INFO L124 PetriNetUnfolderBase]: 9622/16136 cut-off events. [2023-11-23 22:23:49,399 INFO L125 PetriNetUnfolderBase]: For 23157/23163 co-relation queries the response was YES. [2023-11-23 22:23:49,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46905 conditions, 16136 events. 9622/16136 cut-off events. For 23157/23163 co-relation queries the response was YES. Maximal size of possible extension queue 974. Compared 133470 event pairs, 901 based on Foata normal form. 394/16427 useless extension candidates. Maximal degree in co-relation 46886. Up to 5776 conditions per place. [2023-11-23 22:23:49,558 INFO L140 encePairwiseOnDemand]: 55/65 looper letters, 55 selfloop transitions, 11 changer transitions 78/163 dead transitions. [2023-11-23 22:23:49,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 163 transitions, 1047 flow [2023-11-23 22:23:49,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 22:23:49,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 22:23:49,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 454 transitions. [2023-11-23 22:23:49,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6984615384615385 [2023-11-23 22:23:49,561 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 454 transitions. [2023-11-23 22:23:49,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 454 transitions. [2023-11-23 22:23:49,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:49,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 454 transitions. [2023-11-23 22:23:49,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 45.4) internal successors, (454), 10 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:49,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 65.0) internal successors, (715), 11 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:49,567 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 65.0) internal successors, (715), 11 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:49,567 INFO L175 Difference]: Start difference. First operand has 72 places, 51 transitions, 197 flow. Second operand 10 states and 454 transitions. [2023-11-23 22:23:49,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 163 transitions, 1047 flow [2023-11-23 22:23:49,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 163 transitions, 917 flow, removed 31 selfloop flow, removed 4 redundant places. [2023-11-23 22:23:49,858 INFO L231 Difference]: Finished difference. Result has 79 places, 58 transitions, 295 flow [2023-11-23 22:23:49,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=295, PETRI_PLACES=79, PETRI_TRANSITIONS=58} [2023-11-23 22:23:49,861 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2023-11-23 22:23:49,861 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 58 transitions, 295 flow [2023-11-23 22:23:49,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:49,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:49,862 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] [2023-11-23 22:23:49,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 22:23:49,862 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:23:49,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:49,863 INFO L85 PathProgramCache]: Analyzing trace with hash -114747947, now seen corresponding path program 1 times [2023-11-23 22:23:49,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:49,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080107669] [2023-11-23 22:23:49,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:49,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:50,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:50,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080107669] [2023-11-23 22:23:50,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080107669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:50,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:50,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:23:50,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587174561] [2023-11-23 22:23:50,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:50,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:23:50,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:50,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:23:50,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:23:50,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 65 [2023-11-23 22:23:50,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 58 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:50,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:50,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 65 [2023-11-23 22:23:50,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:52,272 INFO L124 PetriNetUnfolderBase]: 8838/14365 cut-off events. [2023-11-23 22:23:52,272 INFO L125 PetriNetUnfolderBase]: For 40753/40753 co-relation queries the response was YES. [2023-11-23 22:23:52,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47140 conditions, 14365 events. 8838/14365 cut-off events. For 40753/40753 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 111249 event pairs, 1681 based on Foata normal form. 314/14551 useless extension candidates. Maximal degree in co-relation 47114. Up to 5604 conditions per place. [2023-11-23 22:23:52,416 INFO L140 encePairwiseOnDemand]: 55/65 looper letters, 60 selfloop transitions, 17 changer transitions 64/160 dead transitions. [2023-11-23 22:23:52,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 160 transitions, 1097 flow [2023-11-23 22:23:52,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 22:23:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 22:23:52,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 452 transitions. [2023-11-23 22:23:52,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6953846153846154 [2023-11-23 22:23:52,420 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 452 transitions. [2023-11-23 22:23:52,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 452 transitions. [2023-11-23 22:23:52,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:52,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 452 transitions. [2023-11-23 22:23:52,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 45.2) internal successors, (452), 10 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:52,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 65.0) internal successors, (715), 11 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:52,426 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 65.0) internal successors, (715), 11 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:52,427 INFO L175 Difference]: Start difference. First operand has 79 places, 58 transitions, 295 flow. Second operand 10 states and 452 transitions. [2023-11-23 22:23:52,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 160 transitions, 1097 flow [2023-11-23 22:23:52,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 160 transitions, 1069 flow, removed 14 selfloop flow, removed 0 redundant places. [2023-11-23 22:23:52,653 INFO L231 Difference]: Finished difference. Result has 90 places, 65 transitions, 429 flow [2023-11-23 22:23:52,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=429, PETRI_PLACES=90, PETRI_TRANSITIONS=65} [2023-11-23 22:23:52,655 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 18 predicate places. [2023-11-23 22:23:52,655 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 65 transitions, 429 flow [2023-11-23 22:23:52,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:52,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:52,655 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] [2023-11-23 22:23:52,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 22:23:52,656 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:23:52,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:52,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1755664630, now seen corresponding path program 1 times [2023-11-23 22:23:52,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:52,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406274762] [2023-11-23 22:23:52,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:52,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:52,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:52,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406274762] [2023-11-23 22:23:52,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406274762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:52,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:52,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:23:52,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031237163] [2023-11-23 22:23:52,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:52,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:23:52,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:52,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:23:52,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:23:52,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 65 [2023-11-23 22:23:52,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 65 transitions, 429 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:52,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:52,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 65 [2023-11-23 22:23:52,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:56,416 INFO L124 PetriNetUnfolderBase]: 15751/24606 cut-off events. [2023-11-23 22:23:56,417 INFO L125 PetriNetUnfolderBase]: For 49514/53057 co-relation queries the response was YES. [2023-11-23 22:23:56,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68341 conditions, 24606 events. 15751/24606 cut-off events. For 49514/53057 co-relation queries the response was YES. Maximal size of possible extension queue 1267. Compared 191956 event pairs, 2544 based on Foata normal form. 1292/24963 useless extension candidates. Maximal degree in co-relation 68305. Up to 13651 conditions per place. [2023-11-23 22:23:56,751 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 48 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2023-11-23 22:23:56,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 93 transitions, 630 flow [2023-11-23 22:23:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:23:56,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:23:56,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2023-11-23 22:23:56,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7269230769230769 [2023-11-23 22:23:56,754 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 189 transitions. [2023-11-23 22:23:56,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 189 transitions. [2023-11-23 22:23:56,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:56,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 189 transitions. [2023-11-23 22:23:56,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:56,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:56,756 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:56,757 INFO L175 Difference]: Start difference. First operand has 90 places, 65 transitions, 429 flow. Second operand 4 states and 189 transitions. [2023-11-23 22:23:56,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 93 transitions, 630 flow [2023-11-23 22:23:57,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 93 transitions, 586 flow, removed 22 selfloop flow, removed 10 redundant places. [2023-11-23 22:23:57,548 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 431 flow [2023-11-23 22:23:57,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=431, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2023-11-23 22:23:57,550 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2023-11-23 22:23:57,557 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 431 flow [2023-11-23 22:23:57,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:57,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:57,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:57,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 22:23:57,558 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:23:57,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:57,559 INFO L85 PathProgramCache]: Analyzing trace with hash -420442082, now seen corresponding path program 1 times [2023-11-23 22:23:57,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:57,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302318725] [2023-11-23 22:23:57,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:57,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:57,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:57,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:57,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302318725] [2023-11-23 22:23:57,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302318725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:57,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:57,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 22:23:57,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363400038] [2023-11-23 22:23:57,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:57,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:23:57,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:57,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:23:57,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:23:57,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 65 [2023-11-23 22:23:57,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 431 flow. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:23:57,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:57,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 65 [2023-11-23 22:23:57,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:24:03,110 INFO L124 PetriNetUnfolderBase]: 22424/36455 cut-off events. [2023-11-23 22:24:03,111 INFO L125 PetriNetUnfolderBase]: For 85086/85847 co-relation queries the response was YES. [2023-11-23 22:24:03,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115797 conditions, 36455 events. 22424/36455 cut-off events. For 85086/85847 co-relation queries the response was YES. Maximal size of possible extension queue 1946. Compared 319062 event pairs, 7360 based on Foata normal form. 738/34311 useless extension candidates. Maximal degree in co-relation 115767. Up to 11953 conditions per place. [2023-11-23 22:24:03,388 INFO L140 encePairwiseOnDemand]: 55/65 looper letters, 108 selfloop transitions, 29 changer transitions 14/175 dead transitions. [2023-11-23 22:24:03,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 175 transitions, 1286 flow [2023-11-23 22:24:03,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 22:24:03,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 22:24:03,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 451 transitions. [2023-11-23 22:24:03,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6938461538461539 [2023-11-23 22:24:03,392 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 451 transitions. [2023-11-23 22:24:03,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 451 transitions. [2023-11-23 22:24:03,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:24:03,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 451 transitions. [2023-11-23 22:24:03,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 45.1) internal successors, (451), 10 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:03,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 65.0) internal successors, (715), 11 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:03,397 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 65.0) internal successors, (715), 11 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:03,397 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 431 flow. Second operand 10 states and 451 transitions. [2023-11-23 22:24:03,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 175 transitions, 1286 flow [2023-11-23 22:24:03,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 175 transitions, 1280 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-23 22:24:03,699 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 693 flow [2023-11-23 22:24:03,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=693, PETRI_PLACES=95, PETRI_TRANSITIONS=84} [2023-11-23 22:24:03,700 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 23 predicate places. [2023-11-23 22:24:03,700 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 693 flow [2023-11-23 22:24:03,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:03,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:24:03,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:24:03,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 22:24:03,701 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:24:03,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:24:03,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1016575172, now seen corresponding path program 1 times [2023-11-23 22:24:03,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:24:03,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957229482] [2023-11-23 22:24:03,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:24:03,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:24:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:24:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:24:03,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:24:03,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957229482] [2023-11-23 22:24:03,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957229482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:24:03,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:24:03,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:24:03,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21587349] [2023-11-23 22:24:03,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:24:03,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:24:03,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:24:03,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:24:03,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:24:03,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 65 [2023-11-23 22:24:03,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 84 transitions, 693 flow. Second operand has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:03,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:24:03,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 65 [2023-11-23 22:24:03,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:24:08,317 INFO L124 PetriNetUnfolderBase]: 21445/33060 cut-off events. [2023-11-23 22:24:08,317 INFO L125 PetriNetUnfolderBase]: For 66981/72766 co-relation queries the response was YES. [2023-11-23 22:24:08,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100669 conditions, 33060 events. 21445/33060 cut-off events. For 66981/72766 co-relation queries the response was YES. Maximal size of possible extension queue 1750. Compared 260807 event pairs, 2336 based on Foata normal form. 2004/34053 useless extension candidates. Maximal degree in co-relation 100630. Up to 14909 conditions per place. [2023-11-23 22:24:08,550 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 66 selfloop transitions, 10 changer transitions 8/128 dead transitions. [2023-11-23 22:24:08,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 128 transitions, 1060 flow [2023-11-23 22:24:08,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:24:08,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:24:08,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 240 transitions. [2023-11-23 22:24:08,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7384615384615385 [2023-11-23 22:24:08,552 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 240 transitions. [2023-11-23 22:24:08,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 240 transitions. [2023-11-23 22:24:08,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:24:08,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 240 transitions. [2023-11-23 22:24:08,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:08,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:08,555 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:08,556 INFO L175 Difference]: Start difference. First operand has 95 places, 84 transitions, 693 flow. Second operand 5 states and 240 transitions. [2023-11-23 22:24:08,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 128 transitions, 1060 flow [2023-11-23 22:24:09,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 128 transitions, 1036 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-23 22:24:09,227 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 640 flow [2023-11-23 22:24:09,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=640, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2023-11-23 22:24:09,228 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 29 predicate places. [2023-11-23 22:24:09,228 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 640 flow [2023-11-23 22:24:09,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:09,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:24:09,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:24:09,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 22:24:09,229 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:24:09,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:24:09,230 INFO L85 PathProgramCache]: Analyzing trace with hash -932961662, now seen corresponding path program 1 times [2023-11-23 22:24:09,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:24:09,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474192909] [2023-11-23 22:24:09,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:24:09,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:24:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:24:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:24:09,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:24:09,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474192909] [2023-11-23 22:24:09,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474192909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:24:09,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:24:09,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:24:09,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225460576] [2023-11-23 22:24:09,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:24:09,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:24:09,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:24:09,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:24:09,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:24:09,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 65 [2023-11-23 22:24:09,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 640 flow. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:09,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:24:09,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 65 [2023-11-23 22:24:09,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:24:12,971 INFO L124 PetriNetUnfolderBase]: 15441/23652 cut-off events. [2023-11-23 22:24:12,971 INFO L125 PetriNetUnfolderBase]: For 51057/58487 co-relation queries the response was YES. [2023-11-23 22:24:13,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78832 conditions, 23652 events. 15441/23652 cut-off events. For 51057/58487 co-relation queries the response was YES. Maximal size of possible extension queue 1384. Compared 177798 event pairs, 894 based on Foata normal form. 1530/24371 useless extension candidates. Maximal degree in co-relation 78789. Up to 7676 conditions per place. [2023-11-23 22:24:13,172 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 77 selfloop transitions, 14 changer transitions 2/136 dead transitions. [2023-11-23 22:24:13,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 136 transitions, 1091 flow [2023-11-23 22:24:13,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:24:13,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:24:13,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 289 transitions. [2023-11-23 22:24:13,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7410256410256411 [2023-11-23 22:24:13,175 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 289 transitions. [2023-11-23 22:24:13,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 289 transitions. [2023-11-23 22:24:13,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:24:13,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 289 transitions. [2023-11-23 22:24:13,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:13,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 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) [2023-11-23 22:24:13,179 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 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) [2023-11-23 22:24:13,179 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 640 flow. Second operand 6 states and 289 transitions. [2023-11-23 22:24:13,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 136 transitions, 1091 flow [2023-11-23 22:24:13,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 136 transitions, 1065 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-23 22:24:13,318 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 685 flow [2023-11-23 22:24:13,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=685, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2023-11-23 22:24:13,319 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 28 predicate places. [2023-11-23 22:24:13,319 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 685 flow [2023-11-23 22:24:13,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:13,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:24:13,319 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] [2023-11-23 22:24:13,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 22:24:13,319 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:24:13,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:24:13,320 INFO L85 PathProgramCache]: Analyzing trace with hash 365300927, now seen corresponding path program 1 times [2023-11-23 22:24:13,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:24:13,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943515066] [2023-11-23 22:24:13,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:24:13,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:24:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:24:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:24:13,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:24:13,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943515066] [2023-11-23 22:24:13,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943515066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:24:13,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:24:13,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 22:24:13,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24918990] [2023-11-23 22:24:13,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:24:13,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:24:13,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:24:13,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:24:13,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:24:13,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 65 [2023-11-23 22:24:13,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 685 flow. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:13,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:24:13,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 65 [2023-11-23 22:24:13,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:24:17,233 INFO L124 PetriNetUnfolderBase]: 13433/20324 cut-off events. [2023-11-23 22:24:17,233 INFO L125 PetriNetUnfolderBase]: For 62951/70553 co-relation queries the response was YES. [2023-11-23 22:24:17,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74328 conditions, 20324 events. 13433/20324 cut-off events. For 62951/70553 co-relation queries the response was YES. Maximal size of possible extension queue 1384. Compared 151453 event pairs, 794 based on Foata normal form. 980/20517 useless extension candidates. Maximal degree in co-relation 74286. Up to 7676 conditions per place. [2023-11-23 22:24:17,366 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 71 selfloop transitions, 18 changer transitions 2/131 dead transitions. [2023-11-23 22:24:17,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 131 transitions, 1043 flow [2023-11-23 22:24:17,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:24:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 22:24:17,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 322 transitions. [2023-11-23 22:24:17,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7076923076923077 [2023-11-23 22:24:17,371 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 322 transitions. [2023-11-23 22:24:17,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 322 transitions. [2023-11-23 22:24:17,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:24:17,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 322 transitions. [2023-11-23 22:24:17,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:17,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:17,374 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 65.0) internal successors, (520), 8 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:17,374 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 685 flow. Second operand 7 states and 322 transitions. [2023-11-23 22:24:17,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 131 transitions, 1043 flow [2023-11-23 22:24:17,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 131 transitions, 977 flow, removed 25 selfloop flow, removed 9 redundant places. [2023-11-23 22:24:17,744 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 648 flow [2023-11-23 22:24:17,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=648, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2023-11-23 22:24:17,745 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 25 predicate places. [2023-11-23 22:24:17,745 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 648 flow [2023-11-23 22:24:17,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:17,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:24:17,746 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] [2023-11-23 22:24:17,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-23 22:24:17,746 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 22:24:17,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:24:17,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1315417186, now seen corresponding path program 1 times [2023-11-23 22:24:17,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:24:17,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753909442] [2023-11-23 22:24:17,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:24:17,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:24:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:24:18,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:24:18,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:24:18,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753909442] [2023-11-23 22:24:18,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753909442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:24:18,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:24:18,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 22:24:18,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278941755] [2023-11-23 22:24:18,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:24:18,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:24:18,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:24:18,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:24:18,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:24:18,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 65 [2023-11-23 22:24:18,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 648 flow. Second operand has 7 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:24:18,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:24:18,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 65 [2023-11-23 22:24:18,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand