./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi006_rmo.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9e5a945-dd84-4ae0-8b23-ee1711880a4e/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9e5a945-dd84-4ae0-8b23-ee1711880a4e/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9e5a945-dd84-4ae0-8b23-ee1711880a4e/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9e5a945-dd84-4ae0-8b23-ee1711880a4e/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi006_rmo.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9e5a945-dd84-4ae0-8b23-ee1711880a4e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9e5a945-dd84-4ae0-8b23-ee1711880a4e/bin/uautomizer-verify-uTZkv6EMXl --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 304137b4cdfcb1cb721c511de7faa38271d71a9e3815c7f79977f44461721381 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:31:47,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:31:47,495 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9e5a945-dd84-4ae0-8b23-ee1711880a4e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:31:47,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:31:47,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:31:47,531 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:31:47,532 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:31:47,532 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:31:47,533 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:31:47,534 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:31:47,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:31:47,536 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:31:47,536 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:31:47,537 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:31:47,538 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:31:47,538 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:31:47,539 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:31:47,539 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:31:47,540 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:31:47,540 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:31:47,541 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:31:47,542 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:31:47,542 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:31:47,543 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:31:47,543 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:31:47,543 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:31:47,544 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:31:47,544 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:31:47,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:31:47,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:31:47,546 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:31:47,546 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:31:47,547 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:31:47,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:31:47,548 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:31:47,548 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:31:47,549 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:31:47,549 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:31:47,550 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_a9e5a945-dd84-4ae0-8b23-ee1711880a4e/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9e5a945-dd84-4ae0-8b23-ee1711880a4e/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 304137b4cdfcb1cb721c511de7faa38271d71a9e3815c7f79977f44461721381 [2023-11-12 02:31:47,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:31:47,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:31:47,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:31:47,830 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:31:47,831 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:31:47,833 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9e5a945-dd84-4ae0-8b23-ee1711880a4e/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/rfi006_rmo.i [2023-11-12 02:31:51,123 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:31:51,435 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:31:51,436 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9e5a945-dd84-4ae0-8b23-ee1711880a4e/sv-benchmarks/c/pthread-wmm/rfi006_rmo.i [2023-11-12 02:31:51,455 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9e5a945-dd84-4ae0-8b23-ee1711880a4e/bin/uautomizer-verify-uTZkv6EMXl/data/d69ceceaa/663052f656ee49c580a4a5a861712e5e/FLAG720ebb53d [2023-11-12 02:31:51,484 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9e5a945-dd84-4ae0-8b23-ee1711880a4e/bin/uautomizer-verify-uTZkv6EMXl/data/d69ceceaa/663052f656ee49c580a4a5a861712e5e [2023-11-12 02:31:51,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:31:51,494 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:31:51,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:31:51,496 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:31:51,502 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:31:51,502 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:31:51" (1/1) ... [2023-11-12 02:31:51,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c4c4368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:51, skipping insertion in model container [2023-11-12 02:31:51,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:31:51" (1/1) ... [2023-11-12 02:31:51,579 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:31:52,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:31:52,113 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:31:52,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:31:52,208 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:31:52,209 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:31:52,217 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:31:52,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:52 WrapperNode [2023-11-12 02:31:52,217 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:31:52,219 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:31:52,219 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:31:52,219 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:31:52,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:52" (1/1) ... [2023-11-12 02:31:52,246 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:52" (1/1) ... [2023-11-12 02:31:52,275 INFO L138 Inliner]: procedures = 176, calls = 74, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2023-11-12 02:31:52,276 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:31:52,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:31:52,277 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:31:52,277 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:31:52,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:52" (1/1) ... [2023-11-12 02:31:52,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:52" (1/1) ... [2023-11-12 02:31:52,294 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:52" (1/1) ... [2023-11-12 02:31:52,294 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:52" (1/1) ... [2023-11-12 02:31:52,309 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:52" (1/1) ... [2023-11-12 02:31:52,313 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:52" (1/1) ... [2023-11-12 02:31:52,316 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:52" (1/1) ... [2023-11-12 02:31:52,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:52" (1/1) ... [2023-11-12 02:31:52,324 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:31:52,326 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:31:52,326 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:31:52,326 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:31:52,327 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:52" (1/1) ... [2023-11-12 02:31:52,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:31:52,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9e5a945-dd84-4ae0-8b23-ee1711880a4e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:52,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9e5a945-dd84-4ae0-8b23-ee1711880a4e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:31:52,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9e5a945-dd84-4ae0-8b23-ee1711880a4e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:31:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:31:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:31:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:31:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:31:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:31:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:31:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:31:52,412 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:31:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:31:52,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:31:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:31:52,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:31:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:31:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:31:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:31:52,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:31:52,418 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:31:52,578 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:31:52,580 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:31:53,204 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:31:53,743 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:31:53,743 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:31:53,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:31:53 BoogieIcfgContainer [2023-11-12 02:31:53,747 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:31:53,752 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:31:53,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:31:53,757 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:31:53,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:31:51" (1/3) ... [2023-11-12 02:31:53,758 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a60300b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:31:53, skipping insertion in model container [2023-11-12 02:31:53,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:52" (2/3) ... [2023-11-12 02:31:53,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a60300b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:31:53, skipping insertion in model container [2023-11-12 02:31:53,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:31:53" (3/3) ... [2023-11-12 02:31:53,763 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi006_rmo.i [2023-11-12 02:31:53,785 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:31:53,785 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-12 02:31:53,786 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:31:53,920 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:31:53,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 178 transitions, 368 flow [2023-11-12 02:31:54,094 INFO L124 PetriNetUnfolderBase]: 3/175 cut-off events. [2023-11-12 02:31:54,095 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:31:54,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 175 events. 3/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 262 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-11-12 02:31:54,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 178 transitions, 368 flow [2023-11-12 02:31:54,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 175 transitions, 359 flow [2023-11-12 02:31:54,119 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:31:54,141 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 175 transitions, 359 flow [2023-11-12 02:31:54,145 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 175 transitions, 359 flow [2023-11-12 02:31:54,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 175 transitions, 359 flow [2023-11-12 02:31:54,227 INFO L124 PetriNetUnfolderBase]: 3/175 cut-off events. [2023-11-12 02:31:54,227 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:31:54,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 175 events. 3/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 259 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-11-12 02:31:54,236 INFO L119 LiptonReduction]: Number of co-enabled transitions 7168 [2023-11-12 02:32:07,113 INFO L134 LiptonReduction]: Checked pairs total: 35920 [2023-11-12 02:32:07,114 INFO L136 LiptonReduction]: Total number of compositions: 154 [2023-11-12 02:32:07,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:32:07,137 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;@21fcfd92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:32:07,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2023-11-12 02:32:07,139 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:32:07,139 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:32:07,139 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:32:07,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:07,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:32:07,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-12 02:32:07,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:07,146 INFO L85 PathProgramCache]: Analyzing trace with hash 978, now seen corresponding path program 1 times [2023-11-12 02:32:07,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:07,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847991621] [2023-11-12 02:32:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:07,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:07,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:07,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:07,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847991621] [2023-11-12 02:32:07,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847991621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:07,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:07,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:32:07,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619309500] [2023-11-12 02:32:07,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:07,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:32:07,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:07,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:32:07,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:32:07,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 332 [2023-11-12 02:32:07,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 149 flow. Second operand has 2 states, 2 states have (on average 132.5) internal successors, (265), 2 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:07,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:07,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 332 [2023-11-12 02:32:07,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:10,491 INFO L124 PetriNetUnfolderBase]: 11256/15868 cut-off events. [2023-11-12 02:32:10,492 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-12 02:32:10,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31802 conditions, 15868 events. 11256/15868 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 1264. Compared 99863 event pairs, 11256 based on Foata normal form. 0/7392 useless extension candidates. Maximal degree in co-relation 31791. Up to 15858 conditions per place. [2023-11-12 02:32:10,661 INFO L140 encePairwiseOnDemand]: 305/332 looper letters, 39 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2023-11-12 02:32:10,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 171 flow [2023-11-12 02:32:10,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:32:10,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:32:10,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 330 transitions. [2023-11-12 02:32:10,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49698795180722893 [2023-11-12 02:32:10,685 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 330 transitions. [2023-11-12 02:32:10,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 330 transitions. [2023-11-12 02:32:10,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:10,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 330 transitions. [2023-11-12 02:32:10,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 165.0) internal successors, (330), 2 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:10,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:10,705 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:10,708 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 149 flow. Second operand 2 states and 330 transitions. [2023-11-12 02:32:10,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 171 flow [2023-11-12 02:32:10,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:32:10,718 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 90 flow [2023-11-12 02:32:10,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-11-12 02:32:10,724 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -29 predicate places. [2023-11-12 02:32:10,725 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 90 flow [2023-11-12 02:32:10,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 132.5) internal successors, (265), 2 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:10,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:10,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:32:10,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:32:10,726 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-12 02:32:10,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:10,727 INFO L85 PathProgramCache]: Analyzing trace with hash 964357, now seen corresponding path program 1 times [2023-11-12 02:32:10,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:10,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236126024] [2023-11-12 02:32:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:10,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:11,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:11,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:11,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236126024] [2023-11-12 02:32:11,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236126024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:11,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:11,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:32:11,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762582703] [2023-11-12 02:32:11,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:11,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:11,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:11,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:11,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 332 [2023-11-12 02:32:11,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:11,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:11,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 332 [2023-11-12 02:32:11,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:13,214 INFO L124 PetriNetUnfolderBase]: 7437/11015 cut-off events. [2023-11-12 02:32:13,214 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:32:13,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21994 conditions, 11015 events. 7437/11015 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 70936 event pairs, 4665 based on Foata normal form. 0/6422 useless extension candidates. Maximal degree in co-relation 21991. Up to 6806 conditions per place. [2023-11-12 02:32:13,308 INFO L140 encePairwiseOnDemand]: 316/332 looper letters, 44 selfloop transitions, 9 changer transitions 0/56 dead transitions. [2023-11-12 02:32:13,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 224 flow [2023-11-12 02:32:13,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:13,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:32:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-11-12 02:32:13,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4397590361445783 [2023-11-12 02:32:13,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-11-12 02:32:13,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-11-12 02:32:13,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:13,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-11-12 02:32:13,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:13,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:13,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:13,328 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 90 flow. Second operand 3 states and 438 transitions. [2023-11-12 02:32:13,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 224 flow [2023-11-12 02:32:13,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 56 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:32:13,332 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 160 flow [2023-11-12 02:32:13,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-11-12 02:32:13,334 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -27 predicate places. [2023-11-12 02:32:13,336 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 160 flow [2023-11-12 02:32:13,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:13,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:13,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:32:13,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:32:13,344 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-12 02:32:13,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:13,347 INFO L85 PathProgramCache]: Analyzing trace with hash 964358, now seen corresponding path program 1 times [2023-11-12 02:32:13,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:13,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531312607] [2023-11-12 02:32:13,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:13,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:13,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:13,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:13,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531312607] [2023-11-12 02:32:13,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531312607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:13,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:13,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:32:13,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572983575] [2023-11-12 02:32:13,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:13,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:13,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:13,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:13,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:13,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 332 [2023-11-12 02:32:13,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:13,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:13,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 332 [2023-11-12 02:32:13,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:14,655 INFO L124 PetriNetUnfolderBase]: 2596/4054 cut-off events. [2023-11-12 02:32:14,656 INFO L125 PetriNetUnfolderBase]: For 1135/1135 co-relation queries the response was YES. [2023-11-12 02:32:14,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11315 conditions, 4054 events. 2596/4054 cut-off events. For 1135/1135 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 23876 event pairs, 1940 based on Foata normal form. 1104/4674 useless extension candidates. Maximal degree in co-relation 11310. Up to 3999 conditions per place. [2023-11-12 02:32:14,694 INFO L140 encePairwiseOnDemand]: 324/332 looper letters, 36 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-11-12 02:32:14,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 220 flow [2023-11-12 02:32:14,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:14,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:32:14,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-11-12 02:32:14,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428714859437751 [2023-11-12 02:32:14,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-11-12 02:32:14,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-11-12 02:32:14,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:14,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-11-12 02:32:14,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:14,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:14,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:14,705 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 160 flow. Second operand 3 states and 427 transitions. [2023-11-12 02:32:14,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 220 flow [2023-11-12 02:32:14,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:32:14,725 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 130 flow [2023-11-12 02:32:14,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-11-12 02:32:14,728 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -34 predicate places. [2023-11-12 02:32:14,728 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 130 flow [2023-11-12 02:32:14,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:14,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:14,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:14,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:32:14,734 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-12 02:32:14,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:14,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1499248999, now seen corresponding path program 1 times [2023-11-12 02:32:14,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:14,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613658565] [2023-11-12 02:32:14,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:14,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:15,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:15,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613658565] [2023-11-12 02:32:15,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613658565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:15,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:15,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:32:15,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934585647] [2023-11-12 02:32:15,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:15,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:15,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:15,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:15,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:15,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 332 [2023-11-12 02:32:15,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:15,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:15,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 332 [2023-11-12 02:32:15,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:16,144 INFO L124 PetriNetUnfolderBase]: 3160/4876 cut-off events. [2023-11-12 02:32:16,144 INFO L125 PetriNetUnfolderBase]: For 681/681 co-relation queries the response was YES. [2023-11-12 02:32:16,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12541 conditions, 4876 events. 3160/4876 cut-off events. For 681/681 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 29235 event pairs, 982 based on Foata normal form. 0/3847 useless extension candidates. Maximal degree in co-relation 12536. Up to 3354 conditions per place. [2023-11-12 02:32:16,184 INFO L140 encePairwiseOnDemand]: 329/332 looper letters, 63 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-12 02:32:16,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 67 transitions, 350 flow [2023-11-12 02:32:16,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:16,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:32:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-11-12 02:32:16,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44477911646586343 [2023-11-12 02:32:16,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-11-12 02:32:16,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-11-12 02:32:16,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:16,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-11-12 02:32:16,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:16,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:16,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:16,196 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 130 flow. Second operand 3 states and 443 transitions. [2023-11-12 02:32:16,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 67 transitions, 350 flow [2023-11-12 02:32:16,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 67 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:32:16,200 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 137 flow [2023-11-12 02:32:16,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-11-12 02:32:16,201 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -32 predicate places. [2023-11-12 02:32:16,201 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 137 flow [2023-11-12 02:32:16,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:16,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:16,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:16,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:32:16,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-12 02:32:16,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:16,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1499248655, now seen corresponding path program 1 times [2023-11-12 02:32:16,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:16,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136748638] [2023-11-12 02:32:16,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:16,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:16,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:16,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136748638] [2023-11-12 02:32:16,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136748638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:16,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:16,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:32:16,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313188177] [2023-11-12 02:32:16,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:16,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:16,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:16,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:16,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:16,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 332 [2023-11-12 02:32:16,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:16,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:16,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 332 [2023-11-12 02:32:16,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:17,091 INFO L124 PetriNetUnfolderBase]: 2487/4078 cut-off events. [2023-11-12 02:32:17,091 INFO L125 PetriNetUnfolderBase]: For 506/509 co-relation queries the response was YES. [2023-11-12 02:32:17,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10352 conditions, 4078 events. 2487/4078 cut-off events. For 506/509 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 26117 event pairs, 903 based on Foata normal form. 0/3265 useless extension candidates. Maximal degree in co-relation 10346. Up to 2481 conditions per place. [2023-11-12 02:32:17,118 INFO L140 encePairwiseOnDemand]: 328/332 looper letters, 63 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-11-12 02:32:17,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 367 flow [2023-11-12 02:32:17,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:17,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:32:17,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-11-12 02:32:17,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497991967871486 [2023-11-12 02:32:17,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-11-12 02:32:17,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-11-12 02:32:17,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:17,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-11-12 02:32:17,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:17,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:17,127 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:17,128 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 137 flow. Second operand 3 states and 448 transitions. [2023-11-12 02:32:17,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 367 flow [2023-11-12 02:32:17,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 363 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:32:17,130 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 146 flow [2023-11-12 02:32:17,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-11-12 02:32:17,132 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -31 predicate places. [2023-11-12 02:32:17,132 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 146 flow [2023-11-12 02:32:17,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:17,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:17,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:17,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:32:17,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-12 02:32:17,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:17,133 INFO L85 PathProgramCache]: Analyzing trace with hash -767923366, now seen corresponding path program 1 times [2023-11-12 02:32:17,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:17,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681846224] [2023-11-12 02:32:17,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:17,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:17,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:17,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681846224] [2023-11-12 02:32:17,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681846224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:17,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:17,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:32:17,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842571779] [2023-11-12 02:32:17,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:17,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:17,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:17,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:17,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:17,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 332 [2023-11-12 02:32:17,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:17,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:17,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 332 [2023-11-12 02:32:17,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:18,078 INFO L124 PetriNetUnfolderBase]: 2669/4412 cut-off events. [2023-11-12 02:32:18,078 INFO L125 PetriNetUnfolderBase]: For 984/987 co-relation queries the response was YES. [2023-11-12 02:32:18,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11890 conditions, 4412 events. 2669/4412 cut-off events. For 984/987 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 29221 event pairs, 971 based on Foata normal form. 0/3757 useless extension candidates. Maximal degree in co-relation 11883. Up to 2853 conditions per place. [2023-11-12 02:32:18,115 INFO L140 encePairwiseOnDemand]: 326/332 looper letters, 50 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-11-12 02:32:18,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 314 flow [2023-11-12 02:32:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:18,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:32:18,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2023-11-12 02:32:18,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357429718875502 [2023-11-12 02:32:18,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2023-11-12 02:32:18,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2023-11-12 02:32:18,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:18,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2023-11-12 02:32:18,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:18,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:18,126 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:18,126 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 146 flow. Second operand 3 states and 434 transitions. [2023-11-12 02:32:18,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 314 flow [2023-11-12 02:32:18,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:32:18,129 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 178 flow [2023-11-12 02:32:18,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-11-12 02:32:18,130 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -31 predicate places. [2023-11-12 02:32:18,131 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 178 flow [2023-11-12 02:32:18,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:18,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:18,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:18,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:32:18,132 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-12 02:32:18,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:18,132 INFO L85 PathProgramCache]: Analyzing trace with hash -767923365, now seen corresponding path program 1 times [2023-11-12 02:32:18,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:18,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070156125] [2023-11-12 02:32:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:18,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:18,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:18,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:18,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070156125] [2023-11-12 02:32:18,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070156125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:18,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:18,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:32:18,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241512139] [2023-11-12 02:32:18,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:18,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:32:18,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:18,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:32:18,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:32:18,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 332 [2023-11-12 02:32:18,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:18,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:18,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 332 [2023-11-12 02:32:18,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:19,423 INFO L124 PetriNetUnfolderBase]: 2605/4230 cut-off events. [2023-11-12 02:32:19,424 INFO L125 PetriNetUnfolderBase]: For 2126/2126 co-relation queries the response was YES. [2023-11-12 02:32:19,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12334 conditions, 4230 events. 2605/4230 cut-off events. For 2126/2126 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 27091 event pairs, 1489 based on Foata normal form. 32/3605 useless extension candidates. Maximal degree in co-relation 12326. Up to 2718 conditions per place. [2023-11-12 02:32:19,462 INFO L140 encePairwiseOnDemand]: 329/332 looper letters, 64 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-11-12 02:32:19,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 70 transitions, 408 flow [2023-11-12 02:32:19,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:32:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:32:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 572 transitions. [2023-11-12 02:32:19,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307228915662651 [2023-11-12 02:32:19,467 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 572 transitions. [2023-11-12 02:32:19,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 572 transitions. [2023-11-12 02:32:19,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:19,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 572 transitions. [2023-11-12 02:32:19,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:19,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:19,476 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:19,476 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 178 flow. Second operand 4 states and 572 transitions. [2023-11-12 02:32:19,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 70 transitions, 408 flow [2023-11-12 02:32:19,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 70 transitions, 399 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:32:19,519 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 171 flow [2023-11-12 02:32:19,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=171, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-11-12 02:32:19,520 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -31 predicate places. [2023-11-12 02:32:19,520 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 171 flow [2023-11-12 02:32:19,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:19,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:19,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:19,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:32:19,522 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-12 02:32:19,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:19,522 INFO L85 PathProgramCache]: Analyzing trace with hash -655815471, now seen corresponding path program 1 times [2023-11-12 02:32:19,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:19,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876431702] [2023-11-12 02:32:19,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:19,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:20,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:20,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876431702] [2023-11-12 02:32:20,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876431702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:20,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:20,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:32:20,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521845874] [2023-11-12 02:32:20,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:20,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:32:20,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:20,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:32:20,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:32:20,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 332 [2023-11-12 02:32:20,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:20,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:20,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 332 [2023-11-12 02:32:20,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:20,775 INFO L124 PetriNetUnfolderBase]: 2576/4263 cut-off events. [2023-11-12 02:32:20,775 INFO L125 PetriNetUnfolderBase]: For 2040/2043 co-relation queries the response was YES. [2023-11-12 02:32:20,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12024 conditions, 4263 events. 2576/4263 cut-off events. For 2040/2043 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 28076 event pairs, 958 based on Foata normal form. 12/3620 useless extension candidates. Maximal degree in co-relation 12017. Up to 2707 conditions per place. [2023-11-12 02:32:20,806 INFO L140 encePairwiseOnDemand]: 329/332 looper letters, 63 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-11-12 02:32:20,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 69 transitions, 399 flow [2023-11-12 02:32:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:20,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:32:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-11-12 02:32:20,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4367469879518072 [2023-11-12 02:32:20,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-11-12 02:32:20,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-11-12 02:32:20,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:20,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-11-12 02:32:20,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:20,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:20,813 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:20,814 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 171 flow. Second operand 3 states and 435 transitions. [2023-11-12 02:32:20,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 69 transitions, 399 flow [2023-11-12 02:32:20,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 69 transitions, 395 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:32:20,823 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 178 flow [2023-11-12 02:32:20,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-11-12 02:32:20,824 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -30 predicate places. [2023-11-12 02:32:20,824 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 178 flow [2023-11-12 02:32:20,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:20,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:20,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:20,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:32:20,825 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-12 02:32:20,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:20,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1964254938, now seen corresponding path program 1 times [2023-11-12 02:32:20,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:20,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401387686] [2023-11-12 02:32:20,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:20,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:21,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:21,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401387686] [2023-11-12 02:32:21,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401387686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:21,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:21,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:21,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650283321] [2023-11-12 02:32:21,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:21,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:32:21,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:21,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:32:21,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:32:21,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 332 [2023-11-12 02:32:21,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:21,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:21,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 332 [2023-11-12 02:32:21,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:21,736 INFO L124 PetriNetUnfolderBase]: 2242/3652 cut-off events. [2023-11-12 02:32:21,736 INFO L125 PetriNetUnfolderBase]: For 1828/1828 co-relation queries the response was YES. [2023-11-12 02:32:21,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10960 conditions, 3652 events. 2242/3652 cut-off events. For 1828/1828 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 22347 event pairs, 871 based on Foata normal form. 16/3098 useless extension candidates. Maximal degree in co-relation 10952. Up to 1429 conditions per place. [2023-11-12 02:32:21,765 INFO L140 encePairwiseOnDemand]: 319/332 looper letters, 43 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2023-11-12 02:32:21,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 58 transitions, 348 flow [2023-11-12 02:32:21,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:32:21,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:32:21,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 535 transitions. [2023-11-12 02:32:21,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40286144578313254 [2023-11-12 02:32:21,769 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 535 transitions. [2023-11-12 02:32:21,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 535 transitions. [2023-11-12 02:32:21,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:21,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 535 transitions. [2023-11-12 02:32:21,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:21,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:21,776 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:21,776 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 178 flow. Second operand 4 states and 535 transitions. [2023-11-12 02:32:21,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 58 transitions, 348 flow [2023-11-12 02:32:21,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:32:21,784 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 250 flow [2023-11-12 02:32:21,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-11-12 02:32:21,786 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -27 predicate places. [2023-11-12 02:32:21,786 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 250 flow [2023-11-12 02:32:21,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.4) internal successors, (617), 5 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:21,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:21,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:21,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:32:21,787 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-12 02:32:21,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:21,788 INFO L85 PathProgramCache]: Analyzing trace with hash -311763766, now seen corresponding path program 1 times [2023-11-12 02:32:21,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:21,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648724716] [2023-11-12 02:32:21,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:21,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:23,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:23,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648724716] [2023-11-12 02:32:23,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648724716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:23,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:23,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:32:23,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021899945] [2023-11-12 02:32:23,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:23,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:32:23,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:23,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:32:23,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:32:23,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 332 [2023-11-12 02:32:23,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 250 flow. Second operand has 9 states, 9 states have (on average 115.44444444444444) internal successors, (1039), 9 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:23,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:23,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 332 [2023-11-12 02:32:23,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:25,048 INFO L124 PetriNetUnfolderBase]: 2548/4120 cut-off events. [2023-11-12 02:32:25,048 INFO L125 PetriNetUnfolderBase]: For 2864/2867 co-relation queries the response was YES. [2023-11-12 02:32:25,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13760 conditions, 4120 events. 2548/4120 cut-off events. For 2864/2867 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 25873 event pairs, 525 based on Foata normal form. 6/3727 useless extension candidates. Maximal degree in co-relation 13751. Up to 3570 conditions per place. [2023-11-12 02:32:25,078 INFO L140 encePairwiseOnDemand]: 321/332 looper letters, 78 selfloop transitions, 26 changer transitions 0/106 dead transitions. [2023-11-12 02:32:25,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 106 transitions, 708 flow [2023-11-12 02:32:25,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:32:25,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:32:25,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1338 transitions. [2023-11-12 02:32:25,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663745892661555 [2023-11-12 02:32:25,089 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1338 transitions. [2023-11-12 02:32:25,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1338 transitions. [2023-11-12 02:32:25,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:25,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1338 transitions. [2023-11-12 02:32:25,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 121.63636363636364) internal successors, (1338), 11 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:25,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 332.0) internal successors, (3984), 12 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:25,105 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 332.0) internal successors, (3984), 12 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:25,105 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 250 flow. Second operand 11 states and 1338 transitions. [2023-11-12 02:32:25,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 106 transitions, 708 flow [2023-11-12 02:32:25,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 106 transitions, 702 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:32:25,123 INFO L231 Difference]: Finished difference. Result has 65 places, 70 transitions, 478 flow [2023-11-12 02:32:25,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=478, PETRI_PLACES=65, PETRI_TRANSITIONS=70} [2023-11-12 02:32:25,127 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -14 predicate places. [2023-11-12 02:32:25,128 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 70 transitions, 478 flow [2023-11-12 02:32:25,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 115.44444444444444) internal successors, (1039), 9 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:25,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:25,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:25,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:32:25,130 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-12 02:32:25,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:25,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1616600946, now seen corresponding path program 2 times [2023-11-12 02:32:25,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:25,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853920498] [2023-11-12 02:32:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:25,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:26,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:26,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853920498] [2023-11-12 02:32:26,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853920498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:26,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:26,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:32:26,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219992580] [2023-11-12 02:32:26,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:26,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:32:26,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:26,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:32:26,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:32:26,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 332 [2023-11-12 02:32:26,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 478 flow. Second operand has 8 states, 8 states have (on average 115.625) internal successors, (925), 8 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:26,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:26,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 332 [2023-11-12 02:32:26,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:27,812 INFO L124 PetriNetUnfolderBase]: 2535/4119 cut-off events. [2023-11-12 02:32:27,812 INFO L125 PetriNetUnfolderBase]: For 3880/3883 co-relation queries the response was YES. [2023-11-12 02:32:27,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15076 conditions, 4119 events. 2535/4119 cut-off events. For 3880/3883 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 25861 event pairs, 360 based on Foata normal form. 6/3727 useless extension candidates. Maximal degree in co-relation 15062. Up to 3078 conditions per place. [2023-11-12 02:32:27,836 INFO L140 encePairwiseOnDemand]: 322/332 looper letters, 94 selfloop transitions, 49 changer transitions 0/145 dead transitions. [2023-11-12 02:32:27,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 145 transitions, 1181 flow [2023-11-12 02:32:27,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:32:27,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:32:27,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1346 transitions. [2023-11-12 02:32:27,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36856516976998904 [2023-11-12 02:32:27,843 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1346 transitions. [2023-11-12 02:32:27,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1346 transitions. [2023-11-12 02:32:27,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:27,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1346 transitions. [2023-11-12 02:32:27,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 122.36363636363636) internal successors, (1346), 11 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:27,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 332.0) internal successors, (3984), 12 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:27,858 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 332.0) internal successors, (3984), 12 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:27,858 INFO L175 Difference]: Start difference. First operand has 65 places, 70 transitions, 478 flow. Second operand 11 states and 1346 transitions. [2023-11-12 02:32:27,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 145 transitions, 1181 flow [2023-11-12 02:32:27,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 145 transitions, 1179 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-12 02:32:27,892 INFO L231 Difference]: Finished difference. Result has 80 places, 96 transitions, 888 flow [2023-11-12 02:32:27,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=888, PETRI_PLACES=80, PETRI_TRANSITIONS=96} [2023-11-12 02:32:27,893 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2023-11-12 02:32:27,893 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 96 transitions, 888 flow [2023-11-12 02:32:27,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.625) internal successors, (925), 8 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:27,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:27,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:27,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:32:27,895 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-12 02:32:27,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:27,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2136617522, now seen corresponding path program 1 times [2023-11-12 02:32:27,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:27,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841119091] [2023-11-12 02:32:27,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:27,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:28,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:28,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:28,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841119091] [2023-11-12 02:32:28,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841119091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:28,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:28,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:32:28,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903030436] [2023-11-12 02:32:28,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:28,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:32:28,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:28,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:32:28,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:32:28,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 332 [2023-11-12 02:32:28,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 96 transitions, 888 flow. Second operand has 9 states, 9 states have (on average 115.66666666666667) internal successors, (1041), 9 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:28,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:28,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 332 [2023-11-12 02:32:28,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:30,068 INFO L124 PetriNetUnfolderBase]: 2586/4188 cut-off events. [2023-11-12 02:32:30,068 INFO L125 PetriNetUnfolderBase]: For 7501/7501 co-relation queries the response was YES. [2023-11-12 02:32:30,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16339 conditions, 4188 events. 2586/4188 cut-off events. For 7501/7501 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 26510 event pairs, 1027 based on Foata normal form. 0/4001 useless extension candidates. Maximal degree in co-relation 16319. Up to 2378 conditions per place. [2023-11-12 02:32:30,100 INFO L140 encePairwiseOnDemand]: 324/332 looper letters, 126 selfloop transitions, 29 changer transitions 0/157 dead transitions. [2023-11-12 02:32:30,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 157 transitions, 1466 flow [2023-11-12 02:32:30,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:32:30,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:32:30,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1122 transitions. [2023-11-12 02:32:30,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3755020080321285 [2023-11-12 02:32:30,109 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1122 transitions. [2023-11-12 02:32:30,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1122 transitions. [2023-11-12 02:32:30,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:30,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1122 transitions. [2023-11-12 02:32:30,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 124.66666666666667) internal successors, (1122), 9 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:30,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:30,121 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:30,121 INFO L175 Difference]: Start difference. First operand has 80 places, 96 transitions, 888 flow. Second operand 9 states and 1122 transitions. [2023-11-12 02:32:30,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 157 transitions, 1466 flow [2023-11-12 02:32:30,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 157 transitions, 1436 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-12 02:32:30,195 INFO L231 Difference]: Finished difference. Result has 89 places, 100 transitions, 999 flow [2023-11-12 02:32:30,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=999, PETRI_PLACES=89, PETRI_TRANSITIONS=100} [2023-11-12 02:32:30,196 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 10 predicate places. [2023-11-12 02:32:30,196 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 100 transitions, 999 flow [2023-11-12 02:32:30,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 115.66666666666667) internal successors, (1041), 9 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:30,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:30,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:30,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:32:30,197 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-12 02:32:30,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:30,197 INFO L85 PathProgramCache]: Analyzing trace with hash 762360833, now seen corresponding path program 1 times [2023-11-12 02:32:30,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:30,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609687600] [2023-11-12 02:32:30,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:30,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:30,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:30,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609687600] [2023-11-12 02:32:30,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609687600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:30,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:30,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:32:30,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979894792] [2023-11-12 02:32:30,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:30,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:32:30,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:30,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:32:30,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:32:30,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 332 [2023-11-12 02:32:30,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 100 transitions, 999 flow. Second operand has 9 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:30,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:30,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 332 [2023-11-12 02:32:30,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:32,090 INFO L124 PetriNetUnfolderBase]: 2878/4586 cut-off events. [2023-11-12 02:32:32,090 INFO L125 PetriNetUnfolderBase]: For 10048/10048 co-relation queries the response was YES. [2023-11-12 02:32:32,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18274 conditions, 4586 events. 2878/4586 cut-off events. For 10048/10048 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 28801 event pairs, 1056 based on Foata normal form. 80/4433 useless extension candidates. Maximal degree in co-relation 18250. Up to 1370 conditions per place. [2023-11-12 02:32:32,123 INFO L140 encePairwiseOnDemand]: 317/332 looper letters, 103 selfloop transitions, 60 changer transitions 0/166 dead transitions. [2023-11-12 02:32:32,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 166 transitions, 1775 flow [2023-11-12 02:32:32,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:32:32,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:32:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 908 transitions. [2023-11-12 02:32:32,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39070567986230637 [2023-11-12 02:32:32,127 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 908 transitions. [2023-11-12 02:32:32,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 908 transitions. [2023-11-12 02:32:32,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:32,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 908 transitions. [2023-11-12 02:32:32,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.71428571428572) internal successors, (908), 7 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:32,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:32,138 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:32,138 INFO L175 Difference]: Start difference. First operand has 89 places, 100 transitions, 999 flow. Second operand 7 states and 908 transitions. [2023-11-12 02:32:32,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 166 transitions, 1775 flow [2023-11-12 02:32:32,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 166 transitions, 1738 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-12 02:32:32,210 INFO L231 Difference]: Finished difference. Result has 94 places, 124 transitions, 1487 flow [2023-11-12 02:32:32,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1487, PETRI_PLACES=94, PETRI_TRANSITIONS=124} [2023-11-12 02:32:32,211 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 15 predicate places. [2023-11-12 02:32:32,211 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 124 transitions, 1487 flow [2023-11-12 02:32:32,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:32,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:32,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:32,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:32:32,213 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-12 02:32:32,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:32,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1554105366, now seen corresponding path program 2 times [2023-11-12 02:32:32,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:32,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947579777] [2023-11-12 02:32:32,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:32,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:32,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:32,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947579777] [2023-11-12 02:32:32,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947579777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:32,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:32,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:32:32,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016897260] [2023-11-12 02:32:32,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:32,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:32:32,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:32,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:32:32,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:32:33,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 332 [2023-11-12 02:32:33,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 124 transitions, 1487 flow. Second operand has 8 states, 8 states have (on average 117.875) internal successors, (943), 8 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:33,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:33,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 332 [2023-11-12 02:32:33,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:34,354 INFO L124 PetriNetUnfolderBase]: 2577/4138 cut-off events. [2023-11-12 02:32:34,355 INFO L125 PetriNetUnfolderBase]: For 14273/14273 co-relation queries the response was YES. [2023-11-12 02:32:34,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17809 conditions, 4138 events. 2577/4138 cut-off events. For 14273/14273 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 25508 event pairs, 698 based on Foata normal form. 0/4108 useless extension candidates. Maximal degree in co-relation 17784. Up to 1567 conditions per place. [2023-11-12 02:32:34,388 INFO L140 encePairwiseOnDemand]: 325/332 looper letters, 103 selfloop transitions, 40 changer transitions 2/147 dead transitions. [2023-11-12 02:32:34,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 147 transitions, 1786 flow [2023-11-12 02:32:34,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:32:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:32:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 876 transitions. [2023-11-12 02:32:34,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3769363166953528 [2023-11-12 02:32:34,393 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 876 transitions. [2023-11-12 02:32:34,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 876 transitions. [2023-11-12 02:32:34,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:34,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 876 transitions. [2023-11-12 02:32:34,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:34,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:34,402 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:34,402 INFO L175 Difference]: Start difference. First operand has 94 places, 124 transitions, 1487 flow. Second operand 7 states and 876 transitions. [2023-11-12 02:32:34,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 147 transitions, 1786 flow [2023-11-12 02:32:34,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 147 transitions, 1760 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-12 02:32:34,487 INFO L231 Difference]: Finished difference. Result has 97 places, 112 transitions, 1370 flow [2023-11-12 02:32:34,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1370, PETRI_PLACES=97, PETRI_TRANSITIONS=112} [2023-11-12 02:32:34,488 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2023-11-12 02:32:34,488 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 112 transitions, 1370 flow [2023-11-12 02:32:34,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.875) internal successors, (943), 8 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:34,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:34,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:34,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:32:34,489 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-12 02:32:34,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:34,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1091343423, now seen corresponding path program 1 times [2023-11-12 02:32:34,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:34,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943846699] [2023-11-12 02:32:34,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:34,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:34,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:34,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943846699] [2023-11-12 02:32:34,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943846699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:34,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:34,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:34,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136151535] [2023-11-12 02:32:34,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:34,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:32:34,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:34,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:32:34,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:32:34,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 332 [2023-11-12 02:32:34,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 112 transitions, 1370 flow. Second operand has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:34,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:34,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 332 [2023-11-12 02:32:34,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:32:35,385 INFO L124 PetriNetUnfolderBase]: 1481/2576 cut-off events. [2023-11-12 02:32:35,385 INFO L125 PetriNetUnfolderBase]: For 9312/9315 co-relation queries the response was YES. [2023-11-12 02:32:35,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11142 conditions, 2576 events. 1481/2576 cut-off events. For 9312/9315 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 15847 event pairs, 299 based on Foata normal form. 112/2669 useless extension candidates. Maximal degree in co-relation 11116. Up to 2142 conditions per place. [2023-11-12 02:32:35,400 INFO L140 encePairwiseOnDemand]: 326/332 looper letters, 121 selfloop transitions, 4 changer transitions 24/152 dead transitions. [2023-11-12 02:32:35,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 152 transitions, 1933 flow [2023-11-12 02:32:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:32:35,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:32:35,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 689 transitions. [2023-11-12 02:32:35,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4150602409638554 [2023-11-12 02:32:35,403 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 689 transitions. [2023-11-12 02:32:35,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 689 transitions. [2023-11-12 02:32:35,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:32:35,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 689 transitions. [2023-11-12 02:32:35,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:35,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:35,410 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:35,410 INFO L175 Difference]: Start difference. First operand has 97 places, 112 transitions, 1370 flow. Second operand 5 states and 689 transitions. [2023-11-12 02:32:35,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 152 transitions, 1933 flow [2023-11-12 02:32:35,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 152 transitions, 1839 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-12 02:32:35,444 INFO L231 Difference]: Finished difference. Result has 98 places, 110 transitions, 1247 flow [2023-11-12 02:32:35,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1247, PETRI_PLACES=98, PETRI_TRANSITIONS=110} [2023-11-12 02:32:35,445 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2023-11-12 02:32:35,446 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 110 transitions, 1247 flow [2023-11-12 02:32:35,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:35,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:32:35,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:35,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:32:35,447 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-12 02:32:35,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:35,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1391457757, now seen corresponding path program 1 times [2023-11-12 02:32:35,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:35,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027230969] [2023-11-12 02:32:35,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:35,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:35,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:35,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027230969] [2023-11-12 02:32:35,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027230969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:35,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:35,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:35,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382740900] [2023-11-12 02:32:35,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:35,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:32:35,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:35,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:32:35,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:32:35,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 332 [2023-11-12 02:32:35,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 110 transitions, 1247 flow. Second operand has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:35,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:32:35,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 332 [2023-11-12 02:32:35,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand