./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:08:41,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:08:42,043 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:08:42,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:08:42,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:08:42,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:08:42,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:08:42,097 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:08:42,098 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:08:42,099 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:08:42,100 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:08:42,101 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:08:42,101 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:08:42,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:08:42,105 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:08:42,105 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:08:42,106 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:08:42,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:08:42,111 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:08:42,112 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:08:42,112 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:08:42,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:08:42,114 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:08:42,114 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:08:42,115 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:08:42,115 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:08:42,116 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:08:42,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:08:42,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:08:42,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:08:42,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:08:42,120 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:08:42,120 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:08:42,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:08:42,121 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:08:42,121 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:08:42,121 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:08:42,121 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:08:42,122 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_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d [2023-11-06 22:08:42,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:08:42,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:08:42,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:08:42,470 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:08:42,470 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:08:42,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-06 22:08:45,567 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:08:45,903 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:08:45,903 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-06 22:08:45,914 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP/data/4e0f9162b/b6245c4a630342538e186b66c060147c/FLAG98e274e50 [2023-11-06 22:08:45,930 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP/data/4e0f9162b/b6245c4a630342538e186b66c060147c [2023-11-06 22:08:45,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:08:45,940 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:08:45,946 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:08:45,946 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:08:45,952 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:08:45,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:45" (1/1) ... [2023-11-06 22:08:45,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ea20c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:45, skipping insertion in model container [2023-11-06 22:08:45,954 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:45" (1/1) ... [2023-11-06 22:08:45,998 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:08:46,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:08:46,250 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:08:46,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:08:46,289 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:08:46,289 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:08:46,297 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:08:46,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46 WrapperNode [2023-11-06 22:08:46,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:08:46,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:08:46,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:08:46,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:08:46,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2023-11-06 22:08:46,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2023-11-06 22:08:46,369 INFO L138 Inliner]: procedures = 23, calls = 71, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 207 [2023-11-06 22:08:46,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:08:46,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:08:46,370 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:08:46,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:08:46,380 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2023-11-06 22:08:46,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2023-11-06 22:08:46,384 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2023-11-06 22:08:46,385 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2023-11-06 22:08:46,392 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2023-11-06 22:08:46,395 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2023-11-06 22:08:46,397 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2023-11-06 22:08:46,399 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2023-11-06 22:08:46,403 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:08:46,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:08:46,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:08:46,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:08:46,405 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (1/1) ... [2023-11-06 22:08:46,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:08:46,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:46,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:08:46,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:08:46,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:08:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:08:46,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:08:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:08:46,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:08:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:08:46,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:08:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 22:08:46,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 22:08:46,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:08:46,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:08:46,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:08:46,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:08:46,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:08:46,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:08:46,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:08:46,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:08:46,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:08:46,487 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:08:46,595 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:08:46,596 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:08:46,951 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:08:47,126 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:08:47,126 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:08:47,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:47 BoogieIcfgContainer [2023-11-06 22:08:47,133 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:08:47,139 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:08:47,139 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:08:47,142 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:08:47,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:08:45" (1/3) ... [2023-11-06 22:08:47,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5968ad11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:47, skipping insertion in model container [2023-11-06 22:08:47,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:46" (2/3) ... [2023-11-06 22:08:47,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5968ad11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:47, skipping insertion in model container [2023-11-06 22:08:47,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:47" (3/3) ... [2023-11-06 22:08:47,148 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-11-06 22:08:47,167 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:08:47,167 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-06 22:08:47,167 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:08:47,280 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 22:08:47,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 169 transitions, 366 flow [2023-11-06 22:08:47,437 INFO L124 PetriNetUnfolderBase]: 2/165 cut-off events. [2023-11-06 22:08:47,437 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:08:47,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 165 events. 2/165 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 111 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2023-11-06 22:08:47,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 169 transitions, 366 flow [2023-11-06 22:08:47,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 160 transitions, 344 flow [2023-11-06 22:08:47,466 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:08:47,476 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 160 transitions, 344 flow [2023-11-06 22:08:47,478 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 160 transitions, 344 flow [2023-11-06 22:08:47,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 160 transitions, 344 flow [2023-11-06 22:08:47,523 INFO L124 PetriNetUnfolderBase]: 2/160 cut-off events. [2023-11-06 22:08:47,523 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:08:47,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 160 events. 2/160 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2023-11-06 22:08:47,527 INFO L119 LiptonReduction]: Number of co-enabled transitions 1702 [2023-11-06 22:08:54,779 INFO L134 LiptonReduction]: Checked pairs total: 8882 [2023-11-06 22:08:54,779 INFO L136 LiptonReduction]: Total number of compositions: 151 [2023-11-06 22:08:54,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:08:54,811 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;@32e6be35, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:08:54,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-06 22:08:54,813 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:08:54,813 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:08:54,813 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:08:54,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:54,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:08:54,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:08:54,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:54,820 INFO L85 PathProgramCache]: Analyzing trace with hash 669, now seen corresponding path program 1 times [2023-11-06 22:08:54,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:54,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705192117] [2023-11-06 22:08:54,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:54,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:54,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:54,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705192117] [2023-11-06 22:08:54,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705192117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:54,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:54,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:08:54,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123189309] [2023-11-06 22:08:54,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:54,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:08:54,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:54,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:08:54,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:08:54,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 320 [2023-11-06 22:08:54,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 126 flow. Second operand has 2 states, 2 states have (on average 146.5) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:54,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:54,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 320 [2023-11-06 22:08:54,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:55,824 INFO L124 PetriNetUnfolderBase]: 4185/6250 cut-off events. [2023-11-06 22:08:55,825 INFO L125 PetriNetUnfolderBase]: For 244/244 co-relation queries the response was YES. [2023-11-06 22:08:55,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12395 conditions, 6250 events. 4185/6250 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 35741 event pairs, 4185 based on Foata normal form. 0/5313 useless extension candidates. Maximal degree in co-relation 10254. Up to 5885 conditions per place. [2023-11-06 22:08:55,902 INFO L140 encePairwiseOnDemand]: 317/320 looper letters, 43 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-11-06 22:08:55,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 48 transitions, 206 flow [2023-11-06 22:08:55,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:08:55,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:08:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 338 transitions. [2023-11-06 22:08:55,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528125 [2023-11-06 22:08:55,931 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 338 transitions. [2023-11-06 22:08:55,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 338 transitions. [2023-11-06 22:08:55,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:55,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 338 transitions. [2023-11-06 22:08:55,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 169.0) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:55,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:55,954 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:55,956 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 126 flow. Second operand 2 states and 338 transitions. [2023-11-06 22:08:55,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 48 transitions, 206 flow [2023-11-06 22:08:55,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 190 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-06 22:08:55,975 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 104 flow [2023-11-06 22:08:55,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-11-06 22:08:55,983 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2023-11-06 22:08:55,983 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 104 flow [2023-11-06 22:08:55,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 146.5) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:55,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:55,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:08:55,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:08:55,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:08:55,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:55,986 INFO L85 PathProgramCache]: Analyzing trace with hash 660403, now seen corresponding path program 1 times [2023-11-06 22:08:55,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:55,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796698595] [2023-11-06 22:08:55,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:55,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:56,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:56,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796698595] [2023-11-06 22:08:56,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796698595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:56,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:56,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:08:56,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677861277] [2023-11-06 22:08:56,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:56,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:56,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:56,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:56,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:56,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:08:56,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:56,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:56,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:08:56,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:57,194 INFO L124 PetriNetUnfolderBase]: 4038/6033 cut-off events. [2023-11-06 22:08:57,194 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:08:57,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11790 conditions, 6033 events. 4038/6033 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 34480 event pairs, 4038 based on Foata normal form. 0/5164 useless extension candidates. Maximal degree in co-relation 11787. Up to 5669 conditions per place. [2023-11-06 22:08:57,242 INFO L140 encePairwiseOnDemand]: 317/320 looper letters, 40 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-11-06 22:08:57,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 182 flow [2023-11-06 22:08:57,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:57,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:57,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-11-06 22:08:57,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4822916666666667 [2023-11-06 22:08:57,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-11-06 22:08:57,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-11-06 22:08:57,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:57,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-11-06 22:08:57,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:57,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:57,259 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:57,259 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 104 flow. Second operand 3 states and 463 transitions. [2023-11-06 22:08:57,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 182 flow [2023-11-06 22:08:57,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:08:57,263 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 102 flow [2023-11-06 22:08:57,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-11-06 22:08:57,265 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2023-11-06 22:08:57,265 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 102 flow [2023-11-06 22:08:57,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:57,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:57,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:08:57,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:08:57,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:08:57,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:57,277 INFO L85 PathProgramCache]: Analyzing trace with hash 660404, now seen corresponding path program 1 times [2023-11-06 22:08:57,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:57,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132297954] [2023-11-06 22:08:57,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:57,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:57,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:57,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:57,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132297954] [2023-11-06 22:08:57,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132297954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:57,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:57,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:08:57,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17641828] [2023-11-06 22:08:57,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:57,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:57,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:57,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:57,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:57,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 320 [2023-11-06 22:08:57,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:57,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:57,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 320 [2023-11-06 22:08:57,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:58,225 INFO L124 PetriNetUnfolderBase]: 3891/5816 cut-off events. [2023-11-06 22:08:58,225 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:08:58,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11360 conditions, 5816 events. 3891/5816 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 33204 event pairs, 3891 based on Foata normal form. 0/5015 useless extension candidates. Maximal degree in co-relation 11356. Up to 5454 conditions per place. [2023-11-06 22:08:58,274 INFO L140 encePairwiseOnDemand]: 317/320 looper letters, 38 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-11-06 22:08:58,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 176 flow [2023-11-06 22:08:58,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:58,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:58,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-11-06 22:08:58,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46145833333333336 [2023-11-06 22:08:58,277 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-11-06 22:08:58,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-11-06 22:08:58,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:58,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-11-06 22:08:58,279 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) [2023-11-06 22:08:58,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:58,283 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:58,283 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 102 flow. Second operand 3 states and 443 transitions. [2023-11-06 22:08:58,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 176 flow [2023-11-06 22:08:58,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 44 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:08:58,286 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 99 flow [2023-11-06 22:08:58,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-06 22:08:58,288 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -11 predicate places. [2023-11-06 22:08:58,288 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 99 flow [2023-11-06 22:08:58,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:58,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:58,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:08:58,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:08:58,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:08:58,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:58,295 INFO L85 PathProgramCache]: Analyzing trace with hash 634661773, now seen corresponding path program 1 times [2023-11-06 22:08:58,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:58,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342823413] [2023-11-06 22:08:58,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:58,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:58,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:58,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:58,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342823413] [2023-11-06 22:08:58,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342823413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:58,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:58,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:08:58,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367471273] [2023-11-06 22:08:58,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:58,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:58,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:58,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:58,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:58,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 320 [2023-11-06 22:08:58,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:58,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:58,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 320 [2023-11-06 22:08:58,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:59,212 INFO L124 PetriNetUnfolderBase]: 3843/5732 cut-off events. [2023-11-06 22:08:59,212 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:08:59,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11197 conditions, 5732 events. 3843/5732 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 32642 event pairs, 3843 based on Foata normal form. 0/4965 useless extension candidates. Maximal degree in co-relation 11193. Up to 5374 conditions per place. [2023-11-06 22:08:59,251 INFO L140 encePairwiseOnDemand]: 317/320 looper letters, 36 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-11-06 22:08:59,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 169 flow [2023-11-06 22:08:59,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:59,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-11-06 22:08:59,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2023-11-06 22:08:59,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-11-06 22:08:59,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-11-06 22:08:59,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:59,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-11-06 22:08:59,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:59,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:59,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:59,261 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 99 flow. Second operand 3 states and 441 transitions. [2023-11-06 22:08:59,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 169 flow [2023-11-06 22:08:59,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:08:59,264 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 96 flow [2023-11-06 22:08:59,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-11-06 22:08:59,265 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -12 predicate places. [2023-11-06 22:08:59,265 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 96 flow [2023-11-06 22:08:59,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:59,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:59,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:08:59,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:08:59,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:08:59,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:59,268 INFO L85 PathProgramCache]: Analyzing trace with hash 634661772, now seen corresponding path program 1 times [2023-11-06 22:08:59,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:08:59,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991814425] [2023-11-06 22:08:59,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:59,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:08:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:59,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:08:59,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991814425] [2023-11-06 22:08:59,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991814425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:59,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:59,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:08:59,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47480466] [2023-11-06 22:08:59,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:59,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:59,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:08:59,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:59,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:59,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:08:59,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:59,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:59,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:08:59,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:00,044 INFO L124 PetriNetUnfolderBase]: 3795/5648 cut-off events. [2023-11-06 22:09:00,044 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:09:00,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11034 conditions, 5648 events. 3795/5648 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 32183 event pairs, 3795 based on Foata normal form. 0/4915 useless extension candidates. Maximal degree in co-relation 11030. Up to 5294 conditions per place. [2023-11-06 22:09:00,088 INFO L140 encePairwiseOnDemand]: 317/320 looper letters, 34 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-11-06 22:09:00,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 162 flow [2023-11-06 22:09:00,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:00,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-11-06 22:09:00,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47604166666666664 [2023-11-06 22:09:00,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-11-06 22:09:00,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-11-06 22:09:00,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:00,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-11-06 22:09:00,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:00,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:00,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:00,098 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 96 flow. Second operand 3 states and 457 transitions. [2023-11-06 22:09:00,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 162 flow [2023-11-06 22:09:00,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:00,101 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 93 flow [2023-11-06 22:09:00,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=93, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-11-06 22:09:00,103 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -13 predicate places. [2023-11-06 22:09:00,103 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 93 flow [2023-11-06 22:09:00,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:00,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:00,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:00,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:09:00,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:00,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:00,105 INFO L85 PathProgramCache]: Analyzing trace with hash 24624426, now seen corresponding path program 1 times [2023-11-06 22:09:00,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:00,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461630704] [2023-11-06 22:09:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:00,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:00,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:00,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461630704] [2023-11-06 22:09:00,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461630704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:00,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:00,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:09:00,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821757252] [2023-11-06 22:09:00,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:00,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:00,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:00,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:00,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:00,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 320 [2023-11-06 22:09:00,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:00,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:00,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 320 [2023-11-06 22:09:00,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:00,754 INFO L124 PetriNetUnfolderBase]: 3648/5417 cut-off events. [2023-11-06 22:09:00,754 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:09:00,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10589 conditions, 5417 events. 3648/5417 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 30513 event pairs, 3648 based on Foata normal form. 0/4756 useless extension candidates. Maximal degree in co-relation 10585. Up to 5079 conditions per place. [2023-11-06 22:09:00,789 INFO L140 encePairwiseOnDemand]: 317/320 looper letters, 32 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-11-06 22:09:00,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 38 transitions, 155 flow [2023-11-06 22:09:00,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:00,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-11-06 22:09:00,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4552083333333333 [2023-11-06 22:09:00,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-11-06 22:09:00,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-11-06 22:09:00,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:00,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-11-06 22:09:00,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:00,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:00,798 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:00,798 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 93 flow. Second operand 3 states and 437 transitions. [2023-11-06 22:09:00,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 38 transitions, 155 flow [2023-11-06 22:09:00,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 38 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:00,800 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 90 flow [2023-11-06 22:09:00,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-11-06 22:09:00,801 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -14 predicate places. [2023-11-06 22:09:00,801 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 90 flow [2023-11-06 22:09:00,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:00,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:00,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:00,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:09:00,803 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:00,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:00,803 INFO L85 PathProgramCache]: Analyzing trace with hash 24624427, now seen corresponding path program 1 times [2023-11-06 22:09:00,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:00,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195907501] [2023-11-06 22:09:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:00,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:00,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:00,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195907501] [2023-11-06 22:09:00,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195907501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:00,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:00,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:09:00,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386897079] [2023-11-06 22:09:00,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:00,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:00,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:00,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:00,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:00,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:00,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 90 flow. Second operand has 3 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) [2023-11-06 22:09:00,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:00,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:00,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:01,513 INFO L124 PetriNetUnfolderBase]: 3501/5186 cut-off events. [2023-11-06 22:09:01,514 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:09:01,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10144 conditions, 5186 events. 3501/5186 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 28984 event pairs, 3501 based on Foata normal form. 0/4597 useless extension candidates. Maximal degree in co-relation 10140. Up to 4864 conditions per place. [2023-11-06 22:09:01,552 INFO L140 encePairwiseOnDemand]: 317/320 looper letters, 30 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-11-06 22:09:01,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 36 transitions, 148 flow [2023-11-06 22:09:01,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:01,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-11-06 22:09:01,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2023-11-06 22:09:01,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-11-06 22:09:01,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-11-06 22:09:01,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:01,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-11-06 22:09:01,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:01,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:01,562 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:01,563 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 90 flow. Second operand 3 states and 453 transitions. [2023-11-06 22:09:01,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 36 transitions, 148 flow [2023-11-06 22:09:01,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 36 transitions, 147 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:01,565 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 87 flow [2023-11-06 22:09:01,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2023-11-06 22:09:01,566 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-11-06 22:09:01,567 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 87 flow [2023-11-06 22:09:01,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-06 22:09:01,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:01,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:01,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:09:01,568 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:01,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:01,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2105715887, now seen corresponding path program 1 times [2023-11-06 22:09:01,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:01,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699243728] [2023-11-06 22:09:01,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:01,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:01,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:01,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699243728] [2023-11-06 22:09:01,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699243728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:01,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:01,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:09:01,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42145318] [2023-11-06 22:09:01,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:01,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:09:01,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:01,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:09:01,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:09:01,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 320 [2023-11-06 22:09:01,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 87 flow. Second operand has 6 states, 6 states have (on average 123.5) internal successors, (741), 6 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:01,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:01,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 320 [2023-11-06 22:09:01,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:02,429 INFO L124 PetriNetUnfolderBase]: 2733/4098 cut-off events. [2023-11-06 22:09:02,429 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:09:02,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8033 conditions, 4098 events. 2733/4098 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 22304 event pairs, 2733 based on Foata normal form. 0/3781 useless extension candidates. Maximal degree in co-relation 8029. Up to 3840 conditions per place. [2023-11-06 22:09:02,458 INFO L140 encePairwiseOnDemand]: 318/320 looper letters, 29 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-11-06 22:09:02,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 145 flow [2023-11-06 22:09:02,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:02,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:02,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2023-11-06 22:09:02,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41354166666666664 [2023-11-06 22:09:02,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2023-11-06 22:09:02,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2023-11-06 22:09:02,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:02,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2023-11-06 22:09:02,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:02,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:02,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:02,468 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 87 flow. Second operand 3 states and 397 transitions. [2023-11-06 22:09:02,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 145 flow [2023-11-06 22:09:02,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:02,471 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 86 flow [2023-11-06 22:09:02,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-11-06 22:09:02,474 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-11-06 22:09:02,474 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 86 flow [2023-11-06 22:09:02,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.5) internal successors, (741), 6 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:02,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:02,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:02,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:09:02,476 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:02,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:02,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2105715885, now seen corresponding path program 1 times [2023-11-06 22:09:02,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:02,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778839860] [2023-11-06 22:09:02,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:02,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:02,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:02,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778839860] [2023-11-06 22:09:02,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778839860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:02,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:02,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:02,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376909121] [2023-11-06 22:09:02,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:02,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:02,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:02,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:02,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:02,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 320 [2023-11-06 22:09:02,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:02,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:02,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 320 [2023-11-06 22:09:02,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:03,239 INFO L124 PetriNetUnfolderBase]: 1965/3010 cut-off events. [2023-11-06 22:09:03,240 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:09:03,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5922 conditions, 3010 events. 1965/3010 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15784 event pairs, 1965 based on Foata normal form. 0/2965 useless extension candidates. Maximal degree in co-relation 5918. Up to 2816 conditions per place. [2023-11-06 22:09:03,258 INFO L140 encePairwiseOnDemand]: 318/320 looper letters, 28 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-11-06 22:09:03,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 34 transitions, 142 flow [2023-11-06 22:09:03,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:03,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:03,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 426 transitions. [2023-11-06 22:09:03,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2023-11-06 22:09:03,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 426 transitions. [2023-11-06 22:09:03,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 426 transitions. [2023-11-06 22:09:03,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:03,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 426 transitions. [2023-11-06 22:09:03,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:03,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:03,268 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:03,268 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 86 flow. Second operand 3 states and 426 transitions. [2023-11-06 22:09:03,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 34 transitions, 142 flow [2023-11-06 22:09:03,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 34 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:03,270 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 85 flow [2023-11-06 22:09:03,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2023-11-06 22:09:03,271 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-11-06 22:09:03,272 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 85 flow [2023-11-06 22:09:03,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:03,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:03,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:03,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:09:03,274 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:03,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:03,274 INFO L85 PathProgramCache]: Analyzing trace with hash 422121481, now seen corresponding path program 1 times [2023-11-06 22:09:03,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:03,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040651874] [2023-11-06 22:09:03,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:03,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:03,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:03,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040651874] [2023-11-06 22:09:03,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040651874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:03,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:03,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:09:03,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599405450] [2023-11-06 22:09:03,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:03,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:09:03,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:03,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:09:03,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:09:04,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 320 [2023-11-06 22:09:04,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 85 flow. Second operand has 6 states, 6 states have (on average 142.66666666666666) internal successors, (856), 6 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:04,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:04,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 320 [2023-11-06 22:09:04,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:05,212 INFO L124 PetriNetUnfolderBase]: 7775/10913 cut-off events. [2023-11-06 22:09:05,212 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2023-11-06 22:09:05,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22079 conditions, 10913 events. 7775/10913 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 53528 event pairs, 2164 based on Foata normal form. 1/10914 useless extension candidates. Maximal degree in co-relation 22075. Up to 5195 conditions per place. [2023-11-06 22:09:05,264 INFO L140 encePairwiseOnDemand]: 313/320 looper letters, 89 selfloop transitions, 12 changer transitions 13/114 dead transitions. [2023-11-06 22:09:05,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 114 transitions, 487 flow [2023-11-06 22:09:05,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:09:05,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:09:05,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 937 transitions. [2023-11-06 22:09:05,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48802083333333335 [2023-11-06 22:09:05,269 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 937 transitions. [2023-11-06 22:09:05,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 937 transitions. [2023-11-06 22:09:05,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:05,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 937 transitions. [2023-11-06 22:09:05,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 156.16666666666666) internal successors, (937), 6 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:05,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:05,278 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:05,278 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 85 flow. Second operand 6 states and 937 transitions. [2023-11-06 22:09:05,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 114 transitions, 487 flow [2023-11-06 22:09:05,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 114 transitions, 486 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:05,281 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 164 flow [2023-11-06 22:09:05,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-11-06 22:09:05,282 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -8 predicate places. [2023-11-06 22:09:05,283 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 164 flow [2023-11-06 22:09:05,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.66666666666666) internal successors, (856), 6 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:05,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:05,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:05,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:09:05,284 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:05,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:05,285 INFO L85 PathProgramCache]: Analyzing trace with hash 734808677, now seen corresponding path program 2 times [2023-11-06 22:09:05,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:05,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114736247] [2023-11-06 22:09:05,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:05,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:05,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:05,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114736247] [2023-11-06 22:09:05,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114736247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:05,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:05,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:09:05,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886617711] [2023-11-06 22:09:05,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:05,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:09:05,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:05,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:09:05,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:09:05,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:05,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 144.14285714285714) internal successors, (1009), 7 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:05,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:05,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:05,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:06,161 INFO L124 PetriNetUnfolderBase]: 3216/5358 cut-off events. [2023-11-06 22:09:06,161 INFO L125 PetriNetUnfolderBase]: For 407/423 co-relation queries the response was YES. [2023-11-06 22:09:06,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11172 conditions, 5358 events. 3216/5358 cut-off events. For 407/423 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 34747 event pairs, 277 based on Foata normal form. 16/5236 useless extension candidates. Maximal degree in co-relation 11165. Up to 1743 conditions per place. [2023-11-06 22:09:06,208 INFO L140 encePairwiseOnDemand]: 310/320 looper letters, 74 selfloop transitions, 33 changer transitions 1/126 dead transitions. [2023-11-06 22:09:06,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 126 transitions, 556 flow [2023-11-06 22:09:06,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:09:06,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:09:06,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1089 transitions. [2023-11-06 22:09:06,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861607142857143 [2023-11-06 22:09:06,213 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1089 transitions. [2023-11-06 22:09:06,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1089 transitions. [2023-11-06 22:09:06,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:06,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1089 transitions. [2023-11-06 22:09:06,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 155.57142857142858) internal successors, (1089), 7 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:06,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 320.0) internal successors, (2560), 8 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:06,224 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 320.0) internal successors, (2560), 8 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:06,224 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 164 flow. Second operand 7 states and 1089 transitions. [2023-11-06 22:09:06,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 126 transitions, 556 flow [2023-11-06 22:09:06,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 126 transitions, 548 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:06,233 INFO L231 Difference]: Finished difference. Result has 62 places, 74 transitions, 290 flow [2023-11-06 22:09:06,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=290, PETRI_PLACES=62, PETRI_TRANSITIONS=74} [2023-11-06 22:09:06,234 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2023-11-06 22:09:06,234 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 74 transitions, 290 flow [2023-11-06 22:09:06,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.14285714285714) internal successors, (1009), 7 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:06,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:06,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:06,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:09:06,236 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:06,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:06,237 INFO L85 PathProgramCache]: Analyzing trace with hash 119410973, now seen corresponding path program 3 times [2023-11-06 22:09:06,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:06,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850751738] [2023-11-06 22:09:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:06,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:06,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:06,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:06,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850751738] [2023-11-06 22:09:06,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850751738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:06,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:06,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:09:06,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196743264] [2023-11-06 22:09:06,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:06,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:06,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:06,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:06,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:06,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:06,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 74 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:06,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:06,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:06,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:07,306 INFO L124 PetriNetUnfolderBase]: 4595/7776 cut-off events. [2023-11-06 22:09:07,307 INFO L125 PetriNetUnfolderBase]: For 2811/3085 co-relation queries the response was YES. [2023-11-06 22:09:07,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19770 conditions, 7776 events. 4595/7776 cut-off events. For 2811/3085 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 54152 event pairs, 1003 based on Foata normal form. 260/7908 useless extension candidates. Maximal degree in co-relation 19762. Up to 2218 conditions per place. [2023-11-06 22:09:07,377 INFO L140 encePairwiseOnDemand]: 310/320 looper letters, 91 selfloop transitions, 43 changer transitions 0/152 dead transitions. [2023-11-06 22:09:07,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 152 transitions, 813 flow [2023-11-06 22:09:07,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:07,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:07,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 788 transitions. [2023-11-06 22:09:07,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925 [2023-11-06 22:09:07,381 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 788 transitions. [2023-11-06 22:09:07,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 788 transitions. [2023-11-06 22:09:07,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:07,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 788 transitions. [2023-11-06 22:09:07,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.6) internal successors, (788), 5 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:07,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:07,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:07,389 INFO L175 Difference]: Start difference. First operand has 62 places, 74 transitions, 290 flow. Second operand 5 states and 788 transitions. [2023-11-06 22:09:07,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 152 transitions, 813 flow [2023-11-06 22:09:07,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 152 transitions, 808 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:07,413 INFO L231 Difference]: Finished difference. Result has 67 places, 107 transitions, 594 flow [2023-11-06 22:09:07,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=594, PETRI_PLACES=67, PETRI_TRANSITIONS=107} [2023-11-06 22:09:07,414 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2023-11-06 22:09:07,414 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 107 transitions, 594 flow [2023-11-06 22:09:07,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:07,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:07,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:07,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:09:07,416 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:07,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:07,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1358089949, now seen corresponding path program 4 times [2023-11-06 22:09:07,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:07,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261945128] [2023-11-06 22:09:07,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:07,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:07,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:07,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261945128] [2023-11-06 22:09:07,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261945128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:07,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:07,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:09:07,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395351777] [2023-11-06 22:09:07,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:07,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:07,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:07,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:07,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:07,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 107 transitions, 594 flow. Second operand has 5 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:07,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:07,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:07,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:08,618 INFO L124 PetriNetUnfolderBase]: 4338/7435 cut-off events. [2023-11-06 22:09:08,618 INFO L125 PetriNetUnfolderBase]: For 10291/11121 co-relation queries the response was YES. [2023-11-06 22:09:08,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23602 conditions, 7435 events. 4338/7435 cut-off events. For 10291/11121 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 52082 event pairs, 1047 based on Foata normal form. 460/7803 useless extension candidates. Maximal degree in co-relation 23592. Up to 2102 conditions per place. [2023-11-06 22:09:08,694 INFO L140 encePairwiseOnDemand]: 310/320 looper letters, 93 selfloop transitions, 52 changer transitions 0/163 dead transitions. [2023-11-06 22:09:08,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 163 transitions, 1106 flow [2023-11-06 22:09:08,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:08,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 790 transitions. [2023-11-06 22:09:08,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49375 [2023-11-06 22:09:08,699 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 790 transitions. [2023-11-06 22:09:08,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 790 transitions. [2023-11-06 22:09:08,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:08,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 790 transitions. [2023-11-06 22:09:08,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:08,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:08,708 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:08,709 INFO L175 Difference]: Start difference. First operand has 67 places, 107 transitions, 594 flow. Second operand 5 states and 790 transitions. [2023-11-06 22:09:08,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 163 transitions, 1106 flow [2023-11-06 22:09:08,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 163 transitions, 1091 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:08,745 INFO L231 Difference]: Finished difference. Result has 72 places, 117 transitions, 815 flow [2023-11-06 22:09:08,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=815, PETRI_PLACES=72, PETRI_TRANSITIONS=117} [2023-11-06 22:09:08,746 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 8 predicate places. [2023-11-06 22:09:08,746 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 117 transitions, 815 flow [2023-11-06 22:09:08,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:08,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:08,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:08,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:09:08,747 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:08,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:08,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1550786103, now seen corresponding path program 5 times [2023-11-06 22:09:08,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:08,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970270509] [2023-11-06 22:09:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:08,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:08,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:08,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:08,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970270509] [2023-11-06 22:09:08,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970270509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:08,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:08,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:09:08,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920832551] [2023-11-06 22:09:08,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:08,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:09:08,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:09,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:09:09,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:09:09,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:09,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 117 transitions, 815 flow. Second operand has 7 states, 7 states have (on average 144.14285714285714) internal successors, (1009), 7 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:09,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:09,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:09,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:10,426 INFO L124 PetriNetUnfolderBase]: 4630/8039 cut-off events. [2023-11-06 22:09:10,427 INFO L125 PetriNetUnfolderBase]: For 18236/19396 co-relation queries the response was YES. [2023-11-06 22:09:10,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29036 conditions, 8039 events. 4630/8039 cut-off events. For 18236/19396 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 58311 event pairs, 507 based on Foata normal form. 756/8663 useless extension candidates. Maximal degree in co-relation 29024. Up to 2810 conditions per place. [2023-11-06 22:09:10,524 INFO L140 encePairwiseOnDemand]: 310/320 looper letters, 79 selfloop transitions, 84 changer transitions 1/182 dead transitions. [2023-11-06 22:09:10,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 182 transitions, 1383 flow [2023-11-06 22:09:10,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:09:10,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:09:10,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1094 transitions. [2023-11-06 22:09:10,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48839285714285713 [2023-11-06 22:09:10,531 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1094 transitions. [2023-11-06 22:09:10,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1094 transitions. [2023-11-06 22:09:10,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:10,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1094 transitions. [2023-11-06 22:09:10,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 156.28571428571428) internal successors, (1094), 7 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:10,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 320.0) internal successors, (2560), 8 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:10,543 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 320.0) internal successors, (2560), 8 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:10,543 INFO L175 Difference]: Start difference. First operand has 72 places, 117 transitions, 815 flow. Second operand 7 states and 1094 transitions. [2023-11-06 22:09:10,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 182 transitions, 1383 flow [2023-11-06 22:09:10,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 182 transitions, 1317 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:10,589 INFO L231 Difference]: Finished difference. Result has 77 places, 125 transitions, 1020 flow [2023-11-06 22:09:10,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1020, PETRI_PLACES=77, PETRI_TRANSITIONS=125} [2023-11-06 22:09:10,590 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2023-11-06 22:09:10,590 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 125 transitions, 1020 flow [2023-11-06 22:09:10,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.14285714285714) internal successors, (1009), 7 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:10,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:10,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:10,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:09:10,592 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:10,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:10,593 INFO L85 PathProgramCache]: Analyzing trace with hash -620672797, now seen corresponding path program 6 times [2023-11-06 22:09:10,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:10,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656844096] [2023-11-06 22:09:10,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:10,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:10,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:10,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656844096] [2023-11-06 22:09:10,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656844096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:10,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:10,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:09:10,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201492398] [2023-11-06 22:09:10,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:10,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:10,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:10,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:10,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:10,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:10,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 125 transitions, 1020 flow. Second operand has 5 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:10,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:10,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:10,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:12,052 INFO L124 PetriNetUnfolderBase]: 4281/7466 cut-off events. [2023-11-06 22:09:12,053 INFO L125 PetriNetUnfolderBase]: For 23742/24744 co-relation queries the response was YES. [2023-11-06 22:09:12,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28830 conditions, 7466 events. 4281/7466 cut-off events. For 23742/24744 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 53734 event pairs, 1067 based on Foata normal form. 508/7860 useless extension candidates. Maximal degree in co-relation 28817. Up to 2108 conditions per place. [2023-11-06 22:09:12,137 INFO L140 encePairwiseOnDemand]: 310/320 looper letters, 91 selfloop transitions, 69 changer transitions 5/183 dead transitions. [2023-11-06 22:09:12,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 183 transitions, 1643 flow [2023-11-06 22:09:12,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:12,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 792 transitions. [2023-11-06 22:09:12,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.495 [2023-11-06 22:09:12,142 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 792 transitions. [2023-11-06 22:09:12,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 792 transitions. [2023-11-06 22:09:12,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:12,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 792 transitions. [2023-11-06 22:09:12,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:12,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:12,152 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:12,152 INFO L175 Difference]: Start difference. First operand has 77 places, 125 transitions, 1020 flow. Second operand 5 states and 792 transitions. [2023-11-06 22:09:12,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 183 transitions, 1643 flow [2023-11-06 22:09:12,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 183 transitions, 1491 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:09:12,196 INFO L231 Difference]: Finished difference. Result has 79 places, 135 transitions, 1191 flow [2023-11-06 22:09:12,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1191, PETRI_PLACES=79, PETRI_TRANSITIONS=135} [2023-11-06 22:09:12,197 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 15 predicate places. [2023-11-06 22:09:12,198 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 135 transitions, 1191 flow [2023-11-06 22:09:12,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:12,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:12,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:12,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:09:12,199 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:12,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:12,200 INFO L85 PathProgramCache]: Analyzing trace with hash 680121613, now seen corresponding path program 7 times [2023-11-06 22:09:12,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:12,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912245492] [2023-11-06 22:09:12,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:12,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:12,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:12,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912245492] [2023-11-06 22:09:12,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912245492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:12,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:12,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:09:12,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597321484] [2023-11-06 22:09:12,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:12,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:12,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:12,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:12,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:12,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:12,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 135 transitions, 1191 flow. Second operand has 5 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:12,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:12,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:12,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:13,138 INFO L124 PetriNetUnfolderBase]: 2532/4737 cut-off events. [2023-11-06 22:09:13,139 INFO L125 PetriNetUnfolderBase]: For 17423/18445 co-relation queries the response was YES. [2023-11-06 22:09:13,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18739 conditions, 4737 events. 2532/4737 cut-off events. For 17423/18445 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 32964 event pairs, 466 based on Foata normal form. 658/5333 useless extension candidates. Maximal degree in co-relation 18724. Up to 1341 conditions per place. [2023-11-06 22:09:13,172 INFO L140 encePairwiseOnDemand]: 310/320 looper letters, 86 selfloop transitions, 78 changer transitions 0/178 dead transitions. [2023-11-06 22:09:13,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 178 transitions, 1751 flow [2023-11-06 22:09:13,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:13,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:13,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 786 transitions. [2023-11-06 22:09:13,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49125 [2023-11-06 22:09:13,177 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 786 transitions. [2023-11-06 22:09:13,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 786 transitions. [2023-11-06 22:09:13,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:13,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 786 transitions. [2023-11-06 22:09:13,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.2) internal successors, (786), 5 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:13,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:13,185 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:13,185 INFO L175 Difference]: Start difference. First operand has 79 places, 135 transitions, 1191 flow. Second operand 5 states and 786 transitions. [2023-11-06 22:09:13,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 178 transitions, 1751 flow [2023-11-06 22:09:13,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 178 transitions, 1665 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-06 22:09:13,209 INFO L231 Difference]: Finished difference. Result has 81 places, 141 transitions, 1436 flow [2023-11-06 22:09:13,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1436, PETRI_PLACES=81, PETRI_TRANSITIONS=141} [2023-11-06 22:09:13,210 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 17 predicate places. [2023-11-06 22:09:13,210 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 141 transitions, 1436 flow [2023-11-06 22:09:13,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:13,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:13,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:13,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:09:13,212 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:13,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:13,212 INFO L85 PathProgramCache]: Analyzing trace with hash -2046878149, now seen corresponding path program 8 times [2023-11-06 22:09:13,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:13,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016239313] [2023-11-06 22:09:13,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:13,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:13,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:13,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016239313] [2023-11-06 22:09:13,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016239313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:13,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:13,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:09:13,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313697909] [2023-11-06 22:09:13,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:13,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:09:13,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:13,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:09:13,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:09:13,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:13,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 141 transitions, 1436 flow. Second operand has 6 states, 6 states have (on average 144.83333333333334) internal successors, (869), 6 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:13,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:13,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:13,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:14,227 INFO L124 PetriNetUnfolderBase]: 2676/5144 cut-off events. [2023-11-06 22:09:14,228 INFO L125 PetriNetUnfolderBase]: For 22016/23286 co-relation queries the response was YES. [2023-11-06 22:09:14,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21241 conditions, 5144 events. 2676/5144 cut-off events. For 22016/23286 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 37429 event pairs, 311 based on Foata normal form. 698/5703 useless extension candidates. Maximal degree in co-relation 21225. Up to 1516 conditions per place. [2023-11-06 22:09:14,278 INFO L140 encePairwiseOnDemand]: 310/320 looper letters, 92 selfloop transitions, 113 changer transitions 3/222 dead transitions. [2023-11-06 22:09:14,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 222 transitions, 2255 flow [2023-11-06 22:09:14,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:09:14,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:09:14,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 951 transitions. [2023-11-06 22:09:14,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4953125 [2023-11-06 22:09:14,283 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 951 transitions. [2023-11-06 22:09:14,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 951 transitions. [2023-11-06 22:09:14,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:14,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 951 transitions. [2023-11-06 22:09:14,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 158.5) internal successors, (951), 6 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:14,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:14,293 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:14,294 INFO L175 Difference]: Start difference. First operand has 81 places, 141 transitions, 1436 flow. Second operand 6 states and 951 transitions. [2023-11-06 22:09:14,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 222 transitions, 2255 flow [2023-11-06 22:09:14,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 222 transitions, 2166 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:14,330 INFO L231 Difference]: Finished difference. Result has 86 places, 163 transitions, 1834 flow [2023-11-06 22:09:14,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1834, PETRI_PLACES=86, PETRI_TRANSITIONS=163} [2023-11-06 22:09:14,331 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 22 predicate places. [2023-11-06 22:09:14,331 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 163 transitions, 1834 flow [2023-11-06 22:09:14,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.83333333333334) internal successors, (869), 6 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:14,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:14,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:14,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:09:14,333 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:14,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:14,334 INFO L85 PathProgramCache]: Analyzing trace with hash -16453453, now seen corresponding path program 9 times [2023-11-06 22:09:14,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:14,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311142099] [2023-11-06 22:09:14,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:14,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:14,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:14,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311142099] [2023-11-06 22:09:14,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311142099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:14,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:14,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:09:14,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72218361] [2023-11-06 22:09:14,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:14,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:09:14,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:14,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:09:14,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:09:14,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:14,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 163 transitions, 1834 flow. Second operand has 7 states, 7 states have (on average 144.14285714285714) internal successors, (1009), 7 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:14,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:14,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:14,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:15,429 INFO L124 PetriNetUnfolderBase]: 2746/5322 cut-off events. [2023-11-06 22:09:15,429 INFO L125 PetriNetUnfolderBase]: For 30965/32307 co-relation queries the response was YES. [2023-11-06 22:09:15,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23557 conditions, 5322 events. 2746/5322 cut-off events. For 30965/32307 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 39413 event pairs, 317 based on Foata normal form. 792/5976 useless extension candidates. Maximal degree in co-relation 23539. Up to 1493 conditions per place. [2023-11-06 22:09:15,486 INFO L140 encePairwiseOnDemand]: 310/320 looper letters, 107 selfloop transitions, 122 changer transitions 1/244 dead transitions. [2023-11-06 22:09:15,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 244 transitions, 2699 flow [2023-11-06 22:09:15,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:09:15,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:09:15,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1255 transitions. [2023-11-06 22:09:15,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.490234375 [2023-11-06 22:09:15,494 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1255 transitions. [2023-11-06 22:09:15,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1255 transitions. [2023-11-06 22:09:15,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:15,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1255 transitions. [2023-11-06 22:09:15,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 156.875) internal successors, (1255), 8 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:15,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 320.0) internal successors, (2880), 9 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:15,510 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 320.0) internal successors, (2880), 9 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:15,511 INFO L175 Difference]: Start difference. First operand has 86 places, 163 transitions, 1834 flow. Second operand 8 states and 1255 transitions. [2023-11-06 22:09:15,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 244 transitions, 2699 flow [2023-11-06 22:09:15,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 244 transitions, 2632 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:15,569 INFO L231 Difference]: Finished difference. Result has 93 places, 172 transitions, 2195 flow [2023-11-06 22:09:15,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2195, PETRI_PLACES=93, PETRI_TRANSITIONS=172} [2023-11-06 22:09:15,571 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 29 predicate places. [2023-11-06 22:09:15,571 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 172 transitions, 2195 flow [2023-11-06 22:09:15,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.14285714285714) internal successors, (1009), 7 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:15,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:15,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:15,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:09:15,573 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:15,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:15,573 INFO L85 PathProgramCache]: Analyzing trace with hash 737320561, now seen corresponding path program 10 times [2023-11-06 22:09:15,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:15,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928129769] [2023-11-06 22:09:15,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:15,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:15,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:15,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928129769] [2023-11-06 22:09:15,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928129769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:15,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:15,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:09:15,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774170189] [2023-11-06 22:09:15,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:15,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:09:15,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:15,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:09:15,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:09:15,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:15,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 172 transitions, 2195 flow. Second operand has 7 states, 7 states have (on average 144.14285714285714) internal successors, (1009), 7 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:15,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:15,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:15,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:16,739 INFO L124 PetriNetUnfolderBase]: 2638/5286 cut-off events. [2023-11-06 22:09:16,739 INFO L125 PetriNetUnfolderBase]: For 37051/38341 co-relation queries the response was YES. [2023-11-06 22:09:16,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25055 conditions, 5286 events. 2638/5286 cut-off events. For 37051/38341 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 40242 event pairs, 281 based on Foata normal form. 762/5916 useless extension candidates. Maximal degree in co-relation 25036. Up to 1467 conditions per place. [2023-11-06 22:09:16,782 INFO L140 encePairwiseOnDemand]: 310/320 looper letters, 106 selfloop transitions, 134 changer transitions 16/270 dead transitions. [2023-11-06 22:09:16,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 270 transitions, 3369 flow [2023-11-06 22:09:16,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:09:16,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:09:16,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1261 transitions. [2023-11-06 22:09:16,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.492578125 [2023-11-06 22:09:16,789 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1261 transitions. [2023-11-06 22:09:16,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1261 transitions. [2023-11-06 22:09:16,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:16,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1261 transitions. [2023-11-06 22:09:16,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 157.625) internal successors, (1261), 8 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:16,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 320.0) internal successors, (2880), 9 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:16,800 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 320.0) internal successors, (2880), 9 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:16,800 INFO L175 Difference]: Start difference. First operand has 93 places, 172 transitions, 2195 flow. Second operand 8 states and 1261 transitions. [2023-11-06 22:09:16,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 270 transitions, 3369 flow [2023-11-06 22:09:16,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 270 transitions, 3188 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:09:16,884 INFO L231 Difference]: Finished difference. Result has 99 places, 184 transitions, 2527 flow [2023-11-06 22:09:16,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=2037, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2527, PETRI_PLACES=99, PETRI_TRANSITIONS=184} [2023-11-06 22:09:16,885 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 35 predicate places. [2023-11-06 22:09:16,885 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 184 transitions, 2527 flow [2023-11-06 22:09:16,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.14285714285714) internal successors, (1009), 7 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:16,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:16,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:16,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:09:16,886 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:16,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:16,887 INFO L85 PathProgramCache]: Analyzing trace with hash 265658799, now seen corresponding path program 11 times [2023-11-06 22:09:16,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:16,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012690102] [2023-11-06 22:09:16,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:16,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:17,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:17,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012690102] [2023-11-06 22:09:17,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012690102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:17,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:17,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:09:17,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074458818] [2023-11-06 22:09:17,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:17,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:09:17,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:17,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:09:17,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:09:17,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:17,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 184 transitions, 2527 flow. Second operand has 7 states, 7 states have (on average 144.14285714285714) internal successors, (1009), 7 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:17,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:17,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:17,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:17,959 INFO L124 PetriNetUnfolderBase]: 1829/3772 cut-off events. [2023-11-06 22:09:17,959 INFO L125 PetriNetUnfolderBase]: For 29468/30746 co-relation queries the response was YES. [2023-11-06 22:09:17,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19067 conditions, 3772 events. 1829/3772 cut-off events. For 29468/30746 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 27614 event pairs, 182 based on Foata normal form. 828/4562 useless extension candidates. Maximal degree in co-relation 19046. Up to 924 conditions per place. [2023-11-06 22:09:17,981 INFO L140 encePairwiseOnDemand]: 310/320 looper letters, 95 selfloop transitions, 129 changer transitions 29/266 dead transitions. [2023-11-06 22:09:17,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 266 transitions, 3660 flow [2023-11-06 22:09:17,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:09:17,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:09:17,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1249 transitions. [2023-11-06 22:09:17,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487890625 [2023-11-06 22:09:17,987 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1249 transitions. [2023-11-06 22:09:17,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1249 transitions. [2023-11-06 22:09:17,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:17,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1249 transitions. [2023-11-06 22:09:17,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 156.125) internal successors, (1249), 8 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:17,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 320.0) internal successors, (2880), 9 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:17,997 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 320.0) internal successors, (2880), 9 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:17,998 INFO L175 Difference]: Start difference. First operand has 99 places, 184 transitions, 2527 flow. Second operand 8 states and 1249 transitions. [2023-11-06 22:09:17,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 266 transitions, 3660 flow [2023-11-06 22:09:18,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 266 transitions, 3521 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:09:18,054 INFO L231 Difference]: Finished difference. Result has 105 places, 176 transitions, 2602 flow [2023-11-06 22:09:18,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=2354, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2602, PETRI_PLACES=105, PETRI_TRANSITIONS=176} [2023-11-06 22:09:18,055 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 41 predicate places. [2023-11-06 22:09:18,055 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 176 transitions, 2602 flow [2023-11-06 22:09:18,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.14285714285714) internal successors, (1009), 7 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:18,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:18,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:18,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:09:18,056 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:18,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:18,057 INFO L85 PathProgramCache]: Analyzing trace with hash 888016093, now seen corresponding path program 12 times [2023-11-06 22:09:18,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:18,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587103416] [2023-11-06 22:09:18,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:18,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:18,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:18,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:18,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587103416] [2023-11-06 22:09:18,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587103416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:18,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:18,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:09:18,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533742189] [2023-11-06 22:09:18,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:18,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:09:18,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:18,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:09:18,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:09:18,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:18,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 176 transitions, 2602 flow. Second operand has 8 states, 8 states have (on average 143.625) internal successors, (1149), 8 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:18,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:18,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:18,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:19,061 INFO L124 PetriNetUnfolderBase]: 1537/3262 cut-off events. [2023-11-06 22:09:19,061 INFO L125 PetriNetUnfolderBase]: For 27248/27870 co-relation queries the response was YES. [2023-11-06 22:09:19,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16676 conditions, 3262 events. 1537/3262 cut-off events. For 27248/27870 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 23660 event pairs, 134 based on Foata normal form. 372/3588 useless extension candidates. Maximal degree in co-relation 16654. Up to 806 conditions per place. [2023-11-06 22:09:19,080 INFO L140 encePairwiseOnDemand]: 310/320 looper letters, 80 selfloop transitions, 129 changer transitions 28/250 dead transitions. [2023-11-06 22:09:19,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 250 transitions, 3552 flow [2023-11-06 22:09:19,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:09:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:09:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1386 transitions. [2023-11-06 22:09:19,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48125 [2023-11-06 22:09:19,086 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1386 transitions. [2023-11-06 22:09:19,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1386 transitions. [2023-11-06 22:09:19,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:19,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1386 transitions. [2023-11-06 22:09:19,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:19,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 320.0) internal successors, (3200), 10 states have internal predecessors, (3200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:19,098 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 320.0) internal successors, (3200), 10 states have internal predecessors, (3200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:19,098 INFO L175 Difference]: Start difference. First operand has 105 places, 176 transitions, 2602 flow. Second operand 9 states and 1386 transitions. [2023-11-06 22:09:19,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 250 transitions, 3552 flow [2023-11-06 22:09:19,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 250 transitions, 3431 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:09:19,161 INFO L231 Difference]: Finished difference. Result has 111 places, 165 transitions, 2547 flow [2023-11-06 22:09:19,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=2492, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2547, PETRI_PLACES=111, PETRI_TRANSITIONS=165} [2023-11-06 22:09:19,162 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 47 predicate places. [2023-11-06 22:09:19,162 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 165 transitions, 2547 flow [2023-11-06 22:09:19,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 143.625) internal successors, (1149), 8 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:19,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:19,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:19,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:09:19,163 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:19,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:19,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1024554797, now seen corresponding path program 13 times [2023-11-06 22:09:19,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:19,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166613236] [2023-11-06 22:09:19,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:19,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:19,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:19,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:19,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166613236] [2023-11-06 22:09:19,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166613236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:19,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:19,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:09:19,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598712791] [2023-11-06 22:09:19,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:19,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:09:19,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:19,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:09:19,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:09:19,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:19,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 165 transitions, 2547 flow. Second operand has 9 states, 9 states have (on average 143.22222222222223) internal successors, (1289), 9 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:19,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:19,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:19,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:20,219 INFO L124 PetriNetUnfolderBase]: 1386/2981 cut-off events. [2023-11-06 22:09:20,219 INFO L125 PetriNetUnfolderBase]: For 29096/29734 co-relation queries the response was YES. [2023-11-06 22:09:20,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15786 conditions, 2981 events. 1386/2981 cut-off events. For 29096/29734 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 21276 event pairs, 133 based on Foata normal form. 342/3278 useless extension candidates. Maximal degree in co-relation 15764. Up to 735 conditions per place. [2023-11-06 22:09:20,237 INFO L140 encePairwiseOnDemand]: 310/320 looper letters, 88 selfloop transitions, 132 changer transitions 16/249 dead transitions. [2023-11-06 22:09:20,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 249 transitions, 3534 flow [2023-11-06 22:09:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:09:20,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:09:20,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1826 transitions. [2023-11-06 22:09:20,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47552083333333334 [2023-11-06 22:09:20,242 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1826 transitions. [2023-11-06 22:09:20,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1826 transitions. [2023-11-06 22:09:20,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:20,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1826 transitions. [2023-11-06 22:09:20,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 152.16666666666666) internal successors, (1826), 12 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:20,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 320.0) internal successors, (4160), 13 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:20,255 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 320.0) internal successors, (4160), 13 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:20,256 INFO L175 Difference]: Start difference. First operand has 111 places, 165 transitions, 2547 flow. Second operand 12 states and 1826 transitions. [2023-11-06 22:09:20,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 249 transitions, 3534 flow [2023-11-06 22:09:20,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 249 transitions, 3242 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-11-06 22:09:20,330 INFO L231 Difference]: Finished difference. Result has 118 places, 168 transitions, 2553 flow [2023-11-06 22:09:20,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=2290, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2553, PETRI_PLACES=118, PETRI_TRANSITIONS=168} [2023-11-06 22:09:20,331 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 54 predicate places. [2023-11-06 22:09:20,331 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 168 transitions, 2553 flow [2023-11-06 22:09:20,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 143.22222222222223) internal successors, (1289), 9 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:20,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:20,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:20,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 22:09:20,332 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:20,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:20,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1816638245, now seen corresponding path program 14 times [2023-11-06 22:09:20,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:20,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698448592] [2023-11-06 22:09:20,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:20,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:20,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:20,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698448592] [2023-11-06 22:09:20,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698448592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:20,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:20,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:09:20,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382627081] [2023-11-06 22:09:20,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:20,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:09:20,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:20,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:09:20,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:09:20,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:20,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 168 transitions, 2553 flow. Second operand has 9 states, 9 states have (on average 143.22222222222223) internal successors, (1289), 9 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:20,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:20,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:20,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:21,381 INFO L124 PetriNetUnfolderBase]: 1387/3013 cut-off events. [2023-11-06 22:09:21,381 INFO L125 PetriNetUnfolderBase]: For 31608/32220 co-relation queries the response was YES. [2023-11-06 22:09:21,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16003 conditions, 3013 events. 1387/3013 cut-off events. For 31608/32220 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 21865 event pairs, 144 based on Foata normal form. 366/3332 useless extension candidates. Maximal degree in co-relation 15980. Up to 737 conditions per place. [2023-11-06 22:09:21,408 INFO L140 encePairwiseOnDemand]: 310/320 looper letters, 75 selfloop transitions, 124 changer transitions 40/252 dead transitions. [2023-11-06 22:09:21,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 252 transitions, 3606 flow [2023-11-06 22:09:21,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:09:21,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:09:21,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1825 transitions. [2023-11-06 22:09:21,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4752604166666667 [2023-11-06 22:09:21,413 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1825 transitions. [2023-11-06 22:09:21,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1825 transitions. [2023-11-06 22:09:21,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:21,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1825 transitions. [2023-11-06 22:09:21,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 152.08333333333334) internal successors, (1825), 12 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:21,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 320.0) internal successors, (4160), 13 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:21,425 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 320.0) internal successors, (4160), 13 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:21,425 INFO L175 Difference]: Start difference. First operand has 118 places, 168 transitions, 2553 flow. Second operand 12 states and 1825 transitions. [2023-11-06 22:09:21,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 252 transitions, 3606 flow [2023-11-06 22:09:21,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 252 transitions, 3418 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-06 22:09:21,500 INFO L231 Difference]: Finished difference. Result has 124 places, 160 transitions, 2499 flow [2023-11-06 22:09:21,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=2383, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2499, PETRI_PLACES=124, PETRI_TRANSITIONS=160} [2023-11-06 22:09:21,501 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 60 predicate places. [2023-11-06 22:09:21,501 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 160 transitions, 2499 flow [2023-11-06 22:09:21,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 143.22222222222223) internal successors, (1289), 9 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:21,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:21,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:21,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 22:09:21,503 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:21,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:21,503 INFO L85 PathProgramCache]: Analyzing trace with hash -325524375, now seen corresponding path program 15 times [2023-11-06 22:09:21,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:21,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546629566] [2023-11-06 22:09:21,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:21,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:21,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:21,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546629566] [2023-11-06 22:09:21,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546629566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:21,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:21,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:09:21,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226649855] [2023-11-06 22:09:21,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:21,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:09:21,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:21,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:09:21,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:09:21,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:21,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 160 transitions, 2499 flow. Second operand has 9 states, 9 states have (on average 143.22222222222223) internal successors, (1289), 9 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:21,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:21,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:21,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:22,546 INFO L124 PetriNetUnfolderBase]: 1324/2897 cut-off events. [2023-11-06 22:09:22,546 INFO L125 PetriNetUnfolderBase]: For 34430/34888 co-relation queries the response was YES. [2023-11-06 22:09:22,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15808 conditions, 2897 events. 1324/2897 cut-off events. For 34430/34888 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 20592 event pairs, 362 based on Foata normal form. 96/2970 useless extension candidates. Maximal degree in co-relation 15784. Up to 1959 conditions per place. [2023-11-06 22:09:22,568 INFO L140 encePairwiseOnDemand]: 310/320 looper letters, 159 selfloop transitions, 43 changer transitions 34/249 dead transitions. [2023-11-06 22:09:22,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 249 transitions, 3880 flow [2023-11-06 22:09:22,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:09:22,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:09:22,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1800 transitions. [2023-11-06 22:09:22,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2023-11-06 22:09:22,573 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1800 transitions. [2023-11-06 22:09:22,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1800 transitions. [2023-11-06 22:09:22,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:22,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1800 transitions. [2023-11-06 22:09:22,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 150.0) internal successors, (1800), 12 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:22,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 320.0) internal successors, (4160), 13 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:22,584 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 320.0) internal successors, (4160), 13 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:22,584 INFO L175 Difference]: Start difference. First operand has 124 places, 160 transitions, 2499 flow. Second operand 12 states and 1800 transitions. [2023-11-06 22:09:22,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 249 transitions, 3880 flow [2023-11-06 22:09:22,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 249 transitions, 3560 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-11-06 22:09:22,648 INFO L231 Difference]: Finished difference. Result has 129 places, 174 transitions, 2653 flow [2023-11-06 22:09:22,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2653, PETRI_PLACES=129, PETRI_TRANSITIONS=174} [2023-11-06 22:09:22,649 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 65 predicate places. [2023-11-06 22:09:22,649 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 174 transitions, 2653 flow [2023-11-06 22:09:22,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 143.22222222222223) internal successors, (1289), 9 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:22,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:22,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:22,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 22:09:22,651 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:22,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:22,651 INFO L85 PathProgramCache]: Analyzing trace with hash 763619535, now seen corresponding path program 16 times [2023-11-06 22:09:22,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:22,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051595494] [2023-11-06 22:09:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:22,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:22,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:22,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051595494] [2023-11-06 22:09:22,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051595494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:22,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:22,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:09:22,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288658590] [2023-11-06 22:09:22,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:22,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:09:22,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:22,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:09:22,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:09:22,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:22,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 174 transitions, 2653 flow. Second operand has 8 states, 8 states have (on average 143.625) internal successors, (1149), 8 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:22,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:22,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:22,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:23,584 INFO L124 PetriNetUnfolderBase]: 1168/2576 cut-off events. [2023-11-06 22:09:23,584 INFO L125 PetriNetUnfolderBase]: For 26821/27345 co-relation queries the response was YES. [2023-11-06 22:09:23,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13593 conditions, 2576 events. 1168/2576 cut-off events. For 26821/27345 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 18130 event pairs, 139 based on Foata normal form. 294/2824 useless extension candidates. Maximal degree in co-relation 13564. Up to 702 conditions per place. [2023-11-06 22:09:23,600 INFO L140 encePairwiseOnDemand]: 310/320 looper letters, 74 selfloop transitions, 134 changer transitions 22/242 dead transitions. [2023-11-06 22:09:23,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 242 transitions, 3458 flow [2023-11-06 22:09:23,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:09:23,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:09:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1389 transitions. [2023-11-06 22:09:23,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4822916666666667 [2023-11-06 22:09:23,606 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1389 transitions. [2023-11-06 22:09:23,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1389 transitions. [2023-11-06 22:09:23,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:23,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1389 transitions. [2023-11-06 22:09:23,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 154.33333333333334) internal successors, (1389), 9 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:23,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 320.0) internal successors, (3200), 10 states have internal predecessors, (3200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:23,614 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 320.0) internal successors, (3200), 10 states have internal predecessors, (3200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:23,615 INFO L175 Difference]: Start difference. First operand has 129 places, 174 transitions, 2653 flow. Second operand 9 states and 1389 transitions. [2023-11-06 22:09:23,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 242 transitions, 3458 flow [2023-11-06 22:09:23,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 242 transitions, 3430 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:23,692 INFO L231 Difference]: Finished difference. Result has 137 places, 168 transitions, 2777 flow [2023-11-06 22:09:23,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=2613, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2777, PETRI_PLACES=137, PETRI_TRANSITIONS=168} [2023-11-06 22:09:23,693 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 73 predicate places. [2023-11-06 22:09:23,693 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 168 transitions, 2777 flow [2023-11-06 22:09:23,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 143.625) internal successors, (1149), 8 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:23,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:23,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:23,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 22:09:23,694 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:09:23,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:23,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1132772127, now seen corresponding path program 17 times [2023-11-06 22:09:23,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:09:23,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341297325] [2023-11-06 22:09:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:23,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:09:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:23,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:23,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:09:23,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341297325] [2023-11-06 22:09:23,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341297325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:23,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:23,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:09:23,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282279150] [2023-11-06 22:09:23,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:23,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:09:23,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:09:23,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:09:23,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:09:23,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 320 [2023-11-06 22:09:23,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 168 transitions, 2777 flow. Second operand has 9 states, 9 states have (on average 143.22222222222223) internal successors, (1289), 9 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:23,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:23,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 320 [2023-11-06 22:09:23,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:24,268 INFO L124 PetriNetUnfolderBase]: 271/632 cut-off events. [2023-11-06 22:09:24,268 INFO L125 PetriNetUnfolderBase]: For 8936/9102 co-relation queries the response was YES. [2023-11-06 22:09:24,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4506 conditions, 632 events. 271/632 cut-off events. For 8936/9102 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3691 event pairs, 5 based on Foata normal form. 194/826 useless extension candidates. Maximal degree in co-relation 4475. Up to 136 conditions per place. [2023-11-06 22:09:24,272 INFO L140 encePairwiseOnDemand]: 312/320 looper letters, 0 selfloop transitions, 0 changer transitions 117/117 dead transitions. [2023-11-06 22:09:24,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 117 transitions, 2004 flow [2023-11-06 22:09:24,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:09:24,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:09:24,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1760 transitions. [2023-11-06 22:09:24,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-11-06 22:09:24,276 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1760 transitions. [2023-11-06 22:09:24,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1760 transitions. [2023-11-06 22:09:24,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:24,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1760 transitions. [2023-11-06 22:09:24,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 146.66666666666666) internal successors, (1760), 12 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:24,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 320.0) internal successors, (4160), 13 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:24,286 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 320.0) internal successors, (4160), 13 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:24,286 INFO L175 Difference]: Start difference. First operand has 137 places, 168 transitions, 2777 flow. Second operand 12 states and 1760 transitions. [2023-11-06 22:09:24,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 117 transitions, 2004 flow [2023-11-06 22:09:24,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 117 transitions, 1791 flow, removed 15 selfloop flow, removed 20 redundant places. [2023-11-06 22:09:24,324 INFO L231 Difference]: Finished difference. Result has 114 places, 0 transitions, 0 flow [2023-11-06 22:09:24,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=114, PETRI_TRANSITIONS=0} [2023-11-06 22:09:24,325 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 50 predicate places. [2023-11-06 22:09:24,325 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 0 transitions, 0 flow [2023-11-06 22:09:24,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 143.22222222222223) internal successors, (1289), 9 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:24,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 22 remaining) [2023-11-06 22:09:24,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 22 remaining) [2023-11-06 22:09:24,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 22 remaining) [2023-11-06 22:09:24,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2023-11-06 22:09:24,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 22 remaining) [2023-11-06 22:09:24,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 22 remaining) [2023-11-06 22:09:24,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2023-11-06 22:09:24,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2023-11-06 22:09:24,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2023-11-06 22:09:24,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2023-11-06 22:09:24,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2023-11-06 22:09:24,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2023-11-06 22:09:24,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2023-11-06 22:09:24,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2023-11-06 22:09:24,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2023-11-06 22:09:24,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 22 remaining) [2023-11-06 22:09:24,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (5 of 22 remaining) [2023-11-06 22:09:24,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK (4 of 22 remaining) [2023-11-06 22:09:24,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 22 remaining) [2023-11-06 22:09:24,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 22 remaining) [2023-11-06 22:09:24,332 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 22 remaining) [2023-11-06 22:09:24,333 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 22 remaining) [2023-11-06 22:09:24,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-06 22:09:24,333 INFO L445 BasicCegarLoop]: Path program histogram: [17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:24,337 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:09:24,337 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:09:24,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:09:24 BasicIcfg [2023-11-06 22:09:24,341 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:09:24,341 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:09:24,342 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:09:24,342 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:09:24,342 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:47" (3/4) ... [2023-11-06 22:09:24,345 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:09:24,349 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:09:24,349 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:09:24,349 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 22:09:24,350 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-11-06 22:09:24,359 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-11-06 22:09:24,359 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 22:09:24,360 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:09:24,360 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:09:24,426 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:09:24,426 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:09:24,426 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:09:24,427 INFO L158 Benchmark]: Toolchain (without parser) took 38487.01ms. Allocated memory was 127.9MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 97.8MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 634.8MB. Max. memory is 16.1GB. [2023-11-06 22:09:24,427 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:09:24,428 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.20ms. Allocated memory is still 127.9MB. Free memory was 97.7MB in the beginning and 85.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:09:24,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.65ms. Allocated memory is still 127.9MB. Free memory was 85.9MB in the beginning and 83.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:09:24,429 INFO L158 Benchmark]: Boogie Preprocessor took 32.67ms. Allocated memory is still 127.9MB. Free memory was 83.7MB in the beginning and 82.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:09:24,429 INFO L158 Benchmark]: RCFGBuilder took 729.43ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 82.0MB in the beginning and 126.1MB in the end (delta: -44.1MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2023-11-06 22:09:24,430 INFO L158 Benchmark]: TraceAbstraction took 37202.50ms. Allocated memory was 157.3MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 125.5MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 627.1MB. Max. memory is 16.1GB. [2023-11-06 22:09:24,430 INFO L158 Benchmark]: Witness Printer took 85.14ms. Allocated memory is still 2.0GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:09:24,432 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.20ms. Allocated memory is still 127.9MB. Free memory was 97.7MB in the beginning and 85.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.65ms. Allocated memory is still 127.9MB. Free memory was 85.9MB in the beginning and 83.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.67ms. Allocated memory is still 127.9MB. Free memory was 83.7MB in the beginning and 82.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 729.43ms. Allocated memory was 127.9MB in the beginning and 157.3MB in the end (delta: 29.4MB). Free memory was 82.0MB in the beginning and 126.1MB in the end (delta: -44.1MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. * TraceAbstraction took 37202.50ms. Allocated memory was 157.3MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 125.5MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 627.1MB. Max. memory is 16.1GB. * Witness Printer took 85.14ms. Allocated memory is still 2.0GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.3s, 171 PlacesBefore, 64 PlacesAfterwards, 160 TransitionsBefore, 51 TransitionsAfterwards, 1702 CoEnabledTransitionPairs, 7 FixpointIterations, 96 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 151 TotalNumberOfCompositions, 8882 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3611, independent: 3375, independent conditional: 0, independent unconditional: 3375, dependent: 236, dependent conditional: 0, dependent unconditional: 236, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 838, independent: 811, independent conditional: 0, independent unconditional: 811, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3611, independent: 2564, independent conditional: 0, independent unconditional: 2564, dependent: 209, dependent conditional: 0, dependent unconditional: 209, unknown: 838, unknown conditional: 0, unknown unconditional: 838] , Statistics on independence cache: Total cache size (in pairs): 220, Positive cache size: 206, Positive conditional cache size: 0, Positive unconditional cache size: 206, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 120]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 201 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 37.0s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 24.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2315 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1781 mSDsluCounter, 207 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 121 mSDsCounter, 421 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5968 IncrementalHoareTripleChecker+Invalid, 6389 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 421 mSolverCounterUnsat, 86 mSDtfsCounter, 5968 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2777occurred in iteration=25, InterpolantAutomatonStates: 162, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 627 NumberOfCodeBlocks, 627 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 601 ConstructedInterpolants, 0 QuantifiedInterpolants, 2181 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:09:24,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936b45d7-4fe9-42d0-9634-7a4bd188daa8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE