./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi009_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdb564b6-98bb-466b-bc02-01d0fdce9115/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdb564b6-98bb-466b-bc02-01d0fdce9115/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdb564b6-98bb-466b-bc02-01d0fdce9115/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdb564b6-98bb-466b-bc02-01d0fdce9115/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi009_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdb564b6-98bb-466b-bc02-01d0fdce9115/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdb564b6-98bb-466b-bc02-01d0fdce9115/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6efd977ba774fd706e089a911dcd82549d76c764859cf8b84047b990ab28d067 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:53:35,524 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:53:35,592 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdb564b6-98bb-466b-bc02-01d0fdce9115/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:53:35,598 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:53:35,598 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:53:35,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:53:35,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:53:35,645 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:53:35,645 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:53:35,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:53:35,647 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:53:35,647 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:53:35,648 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:53:35,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:53:35,649 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:53:35,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:53:35,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:53:35,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:53:35,652 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:53:35,652 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:53:35,653 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:53:35,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:53:35,654 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:53:35,654 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:53:35,655 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:53:35,656 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:53:35,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:53:35,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:53:35,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:53:35,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:53:35,658 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:53:35,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:53:35,660 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:53:35,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:53:35,661 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:53:35,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:53:35,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:53:35,662 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:53:35,663 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_fdb564b6-98bb-466b-bc02-01d0fdce9115/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdb564b6-98bb-466b-bc02-01d0fdce9115/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6efd977ba774fd706e089a911dcd82549d76c764859cf8b84047b990ab28d067 [2023-11-19 07:53:35,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:53:35,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:53:35,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:53:35,947 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:53:35,948 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:53:35,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdb564b6-98bb-466b-bc02-01d0fdce9115/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/rfi009_rmo.oepc.i [2023-11-19 07:53:38,982 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:53:39,292 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:53:39,293 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdb564b6-98bb-466b-bc02-01d0fdce9115/sv-benchmarks/c/pthread-wmm/rfi009_rmo.oepc.i [2023-11-19 07:53:39,313 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdb564b6-98bb-466b-bc02-01d0fdce9115/bin/uautomizer-verify-uCwYo4JHxu/data/698723a63/462e2b99102941eabbc53023fb1c5249/FLAGda02e3299 [2023-11-19 07:53:39,329 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdb564b6-98bb-466b-bc02-01d0fdce9115/bin/uautomizer-verify-uCwYo4JHxu/data/698723a63/462e2b99102941eabbc53023fb1c5249 [2023-11-19 07:53:39,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:53:39,333 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:53:39,335 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:53:39,335 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:53:39,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:53:39,342 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:39" (1/1) ... [2023-11-19 07:53:39,343 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a5fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:39, skipping insertion in model container [2023-11-19 07:53:39,344 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:39" (1/1) ... [2023-11-19 07:53:39,426 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:53:39,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:53:39,909 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:53:39,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:53:40,009 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:53:40,009 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:53:40,017 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:53:40,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40 WrapperNode [2023-11-19 07:53:40,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:53:40,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:53:40,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:53:40,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:53:40,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2023-11-19 07:53:40,053 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2023-11-19 07:53:40,102 INFO L138 Inliner]: procedures = 176, calls = 74, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2023-11-19 07:53:40,105 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:53:40,106 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:53:40,106 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:53:40,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:53:40,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2023-11-19 07:53:40,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2023-11-19 07:53:40,138 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2023-11-19 07:53:40,139 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2023-11-19 07:53:40,150 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2023-11-19 07:53:40,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2023-11-19 07:53:40,167 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2023-11-19 07:53:40,170 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2023-11-19 07:53:40,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:53:40,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:53:40,176 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:53:40,176 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:53:40,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (1/1) ... [2023-11-19 07:53:40,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:53:40,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdb564b6-98bb-466b-bc02-01d0fdce9115/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:40,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdb564b6-98bb-466b-bc02-01d0fdce9115/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:53:40,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdb564b6-98bb-466b-bc02-01d0fdce9115/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:53:40,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:53:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:53:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:53:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:53:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:53:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:53:40,255 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:53:40,255 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:53:40,255 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:53:40,255 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:53:40,255 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:53:40,255 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:53:40,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:53:40,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:53:40,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:53:40,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:53:40,258 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:53:40,420 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:53:40,422 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:53:41,053 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:53:41,658 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:53:41,658 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:53:41,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:41 BoogieIcfgContainer [2023-11-19 07:53:41,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:53:41,675 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:53:41,675 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:53:41,679 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:53:41,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:53:39" (1/3) ... [2023-11-19 07:53:41,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c813ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:41, skipping insertion in model container [2023-11-19 07:53:41,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:40" (2/3) ... [2023-11-19 07:53:41,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c813ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:41, skipping insertion in model container [2023-11-19 07:53:41,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:41" (3/3) ... [2023-11-19 07:53:41,684 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi009_rmo.oepc.i [2023-11-19 07:53:41,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:53:41,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-19 07:53:41,711 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:53:41,848 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:53:41,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 188 transitions, 388 flow [2023-11-19 07:53:42,029 INFO L124 PetriNetUnfolderBase]: 10/185 cut-off events. [2023-11-19 07:53:42,029 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:42,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 185 events. 10/185 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 273 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2023-11-19 07:53:42,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 188 transitions, 388 flow [2023-11-19 07:53:42,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 185 transitions, 379 flow [2023-11-19 07:53:42,056 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:53:42,078 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 185 transitions, 379 flow [2023-11-19 07:53:42,082 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 185 transitions, 379 flow [2023-11-19 07:53:42,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 185 transitions, 379 flow [2023-11-19 07:53:42,169 INFO L124 PetriNetUnfolderBase]: 10/185 cut-off events. [2023-11-19 07:53:42,169 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:42,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 185 events. 10/185 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 272 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2023-11-19 07:53:42,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 8580 [2023-11-19 07:53:57,347 INFO L134 LiptonReduction]: Checked pairs total: 38558 [2023-11-19 07:53:57,348 INFO L136 LiptonReduction]: Total number of compositions: 171 [2023-11-19 07:53:57,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:53:57,371 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;@2222da21, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:53:57,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2023-11-19 07:53:57,374 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:53:57,375 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:53:57,375 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:57,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:57,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:53:57,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-19 07:53:57,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:57,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1050, now seen corresponding path program 1 times [2023-11-19 07:53:57,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:57,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991165012] [2023-11-19 07:53:57,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:57,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:57,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:57,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991165012] [2023-11-19 07:53:57,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991165012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:57,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:57,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:53:57,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113817477] [2023-11-19 07:53:57,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:57,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:53:57,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:57,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:53:57,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:53:57,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 359 [2023-11-19 07:53:57,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 153 flow. Second operand has 2 states, 2 states have (on average 132.5) internal successors, (265), 2 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:57,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:57,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 359 [2023-11-19 07:53:57,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:00,808 INFO L124 PetriNetUnfolderBase]: 11260/15877 cut-off events. [2023-11-19 07:54:00,809 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:54:00,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31820 conditions, 15877 events. 11260/15877 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 1266. Compared 99774 event pairs, 11260 based on Foata normal form. 0/7399 useless extension candidates. Maximal degree in co-relation 31809. Up to 15867 conditions per place. [2023-11-19 07:54:00,967 INFO L140 encePairwiseOnDemand]: 331/359 looper letters, 40 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2023-11-19 07:54:00,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 173 flow [2023-11-19 07:54:00,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:54:00,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:54:00,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 332 transitions. [2023-11-19 07:54:00,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623955431754875 [2023-11-19 07:54:00,990 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 332 transitions. [2023-11-19 07:54:00,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 332 transitions. [2023-11-19 07:54:00,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:00,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 332 transitions. [2023-11-19 07:54:01,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 166.0) internal successors, (332), 2 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:01,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 359.0) internal successors, (1077), 3 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:01,009 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 359.0) internal successors, (1077), 3 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:01,011 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 153 flow. Second operand 2 states and 332 transitions. [2023-11-19 07:54:01,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 173 flow [2023-11-19 07:54:01,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:54:01,021 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 90 flow [2023-11-19 07:54:01,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-11-19 07:54:01,027 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -30 predicate places. [2023-11-19 07:54:01,027 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 90 flow [2023-11-19 07:54:01,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 132.5) internal successors, (265), 2 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:01,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:01,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:54:01,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:54:01,029 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-19 07:54:01,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:01,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1038113, now seen corresponding path program 1 times [2023-11-19 07:54:01,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:01,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190422160] [2023-11-19 07:54:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:01,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:01,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:01,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190422160] [2023-11-19 07:54:01,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190422160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:01,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:01,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:54:01,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146731152] [2023-11-19 07:54:01,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:01,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:01,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:01,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:01,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:01,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 359 [2023-11-19 07:54:01,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:01,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:01,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 359 [2023-11-19 07:54:01,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:02,916 INFO L124 PetriNetUnfolderBase]: 4344/6246 cut-off events. [2023-11-19 07:54:02,917 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:02,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12536 conditions, 6246 events. 4344/6246 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 34914 event pairs, 4344 based on Foata normal form. 0/3772 useless extension candidates. Maximal degree in co-relation 12533. Up to 6237 conditions per place. [2023-11-19 07:54:02,969 INFO L140 encePairwiseOnDemand]: 351/359 looper letters, 32 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-11-19 07:54:02,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 35 transitions, 142 flow [2023-11-19 07:54:02,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:02,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-11-19 07:54:02,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4020427112349118 [2023-11-19 07:54:02,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-11-19 07:54:02,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-11-19 07:54:02,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:02,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-11-19 07:54:02,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:02,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:02,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:02,993 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 90 flow. Second operand 3 states and 433 transitions. [2023-11-19 07:54:02,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 35 transitions, 142 flow [2023-11-19 07:54:02,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 35 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:54:02,996 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 78 flow [2023-11-19 07:54:02,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=43, 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=78, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2023-11-19 07:54:02,998 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -35 predicate places. [2023-11-19 07:54:02,999 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 78 flow [2023-11-19 07:54:03,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:03,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:03,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:54:03,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:54:03,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-19 07:54:03,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:03,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1038112, now seen corresponding path program 1 times [2023-11-19 07:54:03,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:03,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563221337] [2023-11-19 07:54:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:03,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:03,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:03,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:03,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563221337] [2023-11-19 07:54:03,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563221337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:03,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:03,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:54:03,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751571937] [2023-11-19 07:54:03,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:03,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:03,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:03,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:03,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:03,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 359 [2023-11-19 07:54:03,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:03,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:03,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 359 [2023-11-19 07:54:03,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:04,312 INFO L124 PetriNetUnfolderBase]: 2598/4059 cut-off events. [2023-11-19 07:54:04,312 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:04,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8100 conditions, 4059 events. 2598/4059 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 23783 event pairs, 1498 based on Foata normal form. 0/3163 useless extension candidates. Maximal degree in co-relation 8096. Up to 2252 conditions per place. [2023-11-19 07:54:04,342 INFO L140 encePairwiseOnDemand]: 343/359 looper letters, 33 selfloop transitions, 9 changer transitions 0/44 dead transitions. [2023-11-19 07:54:04,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 180 flow [2023-11-19 07:54:04,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:04,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:04,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-11-19 07:54:04,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4020427112349118 [2023-11-19 07:54:04,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-11-19 07:54:04,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-11-19 07:54:04,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:04,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-11-19 07:54:04,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:04,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:04,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:04,353 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 78 flow. Second operand 3 states and 433 transitions. [2023-11-19 07:54:04,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 180 flow [2023-11-19 07:54:04,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:04,357 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 147 flow [2023-11-19 07:54:04,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-11-19 07:54:04,359 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -34 predicate places. [2023-11-19 07:54:04,359 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 147 flow [2023-11-19 07:54:04,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:04,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:04,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:04,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:54:04,365 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-19 07:54:04,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:04,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1242742824, now seen corresponding path program 1 times [2023-11-19 07:54:04,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:04,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679675572] [2023-11-19 07:54:04,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:04,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:04,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:04,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679675572] [2023-11-19 07:54:04,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679675572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:04,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:04,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:04,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961759069] [2023-11-19 07:54:04,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:04,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:04,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:04,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:04,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:04,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 359 [2023-11-19 07:54:04,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:04,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:04,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 359 [2023-11-19 07:54:04,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:05,989 INFO L124 PetriNetUnfolderBase]: 3198/5026 cut-off events. [2023-11-19 07:54:05,989 INFO L125 PetriNetUnfolderBase]: For 1568/1568 co-relation queries the response was YES. [2023-11-19 07:54:06,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13698 conditions, 5026 events. 3198/5026 cut-off events. For 1568/1568 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 30555 event pairs, 1025 based on Foata normal form. 0/4454 useless extension candidates. Maximal degree in co-relation 13693. Up to 4376 conditions per place. [2023-11-19 07:54:06,031 INFO L140 encePairwiseOnDemand]: 355/359 looper letters, 66 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-11-19 07:54:06,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 401 flow [2023-11-19 07:54:06,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:06,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-11-19 07:54:06,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39647168059424326 [2023-11-19 07:54:06,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-11-19 07:54:06,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-11-19 07:54:06,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:06,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-11-19 07:54:06,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:06,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:06,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:06,042 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 147 flow. Second operand 3 states and 427 transitions. [2023-11-19 07:54:06,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 401 flow [2023-11-19 07:54:06,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 71 transitions, 369 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:06,061 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 159 flow [2023-11-19 07:54:06,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-11-19 07:54:06,062 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -33 predicate places. [2023-11-19 07:54:06,063 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 159 flow [2023-11-19 07:54:06,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:06,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:06,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:06,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:54:06,064 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-19 07:54:06,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:06,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1242743090, now seen corresponding path program 1 times [2023-11-19 07:54:06,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:06,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235141174] [2023-11-19 07:54:06,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:06,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:06,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:06,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235141174] [2023-11-19 07:54:06,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235141174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:06,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:06,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:54:06,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958235221] [2023-11-19 07:54:06,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:06,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:06,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:06,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:06,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:06,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 359 [2023-11-19 07:54:06,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:06,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:06,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 359 [2023-11-19 07:54:06,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:07,056 INFO L124 PetriNetUnfolderBase]: 2721/4338 cut-off events. [2023-11-19 07:54:07,056 INFO L125 PetriNetUnfolderBase]: For 1067/1067 co-relation queries the response was YES. [2023-11-19 07:54:07,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11726 conditions, 4338 events. 2721/4338 cut-off events. For 1067/1067 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 26727 event pairs, 1156 based on Foata normal form. 0/3593 useless extension candidates. Maximal degree in co-relation 11720. Up to 2786 conditions per place. [2023-11-19 07:54:07,093 INFO L140 encePairwiseOnDemand]: 355/359 looper letters, 65 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2023-11-19 07:54:07,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 73 transitions, 399 flow [2023-11-19 07:54:07,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:07,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:07,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-11-19 07:54:07,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4178272980501393 [2023-11-19 07:54:07,097 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-11-19 07:54:07,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-11-19 07:54:07,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:07,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-11-19 07:54:07,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:07,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:07,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:07,104 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 159 flow. Second operand 3 states and 450 transitions. [2023-11-19 07:54:07,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 73 transitions, 399 flow [2023-11-19 07:54:07,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 73 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:07,109 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 174 flow [2023-11-19 07:54:07,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-11-19 07:54:07,110 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -31 predicate places. [2023-11-19 07:54:07,110 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 174 flow [2023-11-19 07:54:07,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:07,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:07,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:07,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:54:07,112 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-19 07:54:07,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:07,112 INFO L85 PathProgramCache]: Analyzing trace with hash 129677169, now seen corresponding path program 1 times [2023-11-19 07:54:07,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:07,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136616936] [2023-11-19 07:54:07,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:07,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:07,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:07,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:07,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136616936] [2023-11-19 07:54:07,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136616936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:07,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:07,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:54:07,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181328473] [2023-11-19 07:54:07,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:07,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:07,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:07,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:07,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:07,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 359 [2023-11-19 07:54:07,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:07,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:07,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 359 [2023-11-19 07:54:07,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:08,395 INFO L124 PetriNetUnfolderBase]: 3060/4753 cut-off events. [2023-11-19 07:54:08,395 INFO L125 PetriNetUnfolderBase]: For 2206/2206 co-relation queries the response was YES. [2023-11-19 07:54:08,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13745 conditions, 4753 events. 3060/4753 cut-off events. For 2206/2206 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 28516 event pairs, 948 based on Foata normal form. 16/4024 useless extension candidates. Maximal degree in co-relation 13738. Up to 3264 conditions per place. [2023-11-19 07:54:08,445 INFO L140 encePairwiseOnDemand]: 356/359 looper letters, 64 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-11-19 07:54:08,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 68 transitions, 394 flow [2023-11-19 07:54:08,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:08,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-11-19 07:54:08,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41225626740947074 [2023-11-19 07:54:08,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-11-19 07:54:08,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-11-19 07:54:08,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:08,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-11-19 07:54:08,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:08,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:08,457 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:08,457 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 174 flow. Second operand 3 states and 444 transitions. [2023-11-19 07:54:08,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 68 transitions, 394 flow [2023-11-19 07:54:08,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 68 transitions, 384 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:08,463 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 175 flow [2023-11-19 07:54:08,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-11-19 07:54:08,466 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -30 predicate places. [2023-11-19 07:54:08,467 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 175 flow [2023-11-19 07:54:08,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:08,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:08,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:08,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:54:08,468 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-19 07:54:08,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:08,469 INFO L85 PathProgramCache]: Analyzing trace with hash -477989463, now seen corresponding path program 1 times [2023-11-19 07:54:08,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:08,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086942059] [2023-11-19 07:54:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:08,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:08,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:08,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:08,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086942059] [2023-11-19 07:54:08,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086942059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:08,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:08,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:54:08,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103615970] [2023-11-19 07:54:08,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:08,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:08,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:08,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:08,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:54:08,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 359 [2023-11-19 07:54:08,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:08,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:08,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 359 [2023-11-19 07:54:08,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:09,963 INFO L124 PetriNetUnfolderBase]: 2624/4193 cut-off events. [2023-11-19 07:54:09,963 INFO L125 PetriNetUnfolderBase]: For 1162/1166 co-relation queries the response was YES. [2023-11-19 07:54:09,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11818 conditions, 4193 events. 2624/4193 cut-off events. For 1162/1166 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 25732 event pairs, 897 based on Foata normal form. 0/3516 useless extension candidates. Maximal degree in co-relation 11810. Up to 1613 conditions per place. [2023-11-19 07:54:10,002 INFO L140 encePairwiseOnDemand]: 350/359 looper letters, 62 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2023-11-19 07:54:10,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 76 transitions, 427 flow [2023-11-19 07:54:10,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:10,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:54:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 561 transitions. [2023-11-19 07:54:10,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906685236768802 [2023-11-19 07:54:10,007 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 561 transitions. [2023-11-19 07:54:10,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 561 transitions. [2023-11-19 07:54:10,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:10,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 561 transitions. [2023-11-19 07:54:10,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:10,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:10,016 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:10,016 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 175 flow. Second operand 4 states and 561 transitions. [2023-11-19 07:54:10,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 76 transitions, 427 flow [2023-11-19 07:54:10,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 76 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:10,021 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 247 flow [2023-11-19 07:54:10,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-11-19 07:54:10,022 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -28 predicate places. [2023-11-19 07:54:10,022 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 247 flow [2023-11-19 07:54:10,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:10,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:10,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:10,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:54:10,024 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-19 07:54:10,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:10,024 INFO L85 PathProgramCache]: Analyzing trace with hash 129676904, now seen corresponding path program 1 times [2023-11-19 07:54:10,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:10,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196026627] [2023-11-19 07:54:10,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:10,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:10,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:10,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196026627] [2023-11-19 07:54:10,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196026627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:10,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:10,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:10,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284342495] [2023-11-19 07:54:10,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:10,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:10,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:10,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:10,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:10,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 359 [2023-11-19 07:54:10,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:10,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:10,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 359 [2023-11-19 07:54:10,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:11,448 INFO L124 PetriNetUnfolderBase]: 2560/4097 cut-off events. [2023-11-19 07:54:11,449 INFO L125 PetriNetUnfolderBase]: For 4377/4381 co-relation queries the response was YES. [2023-11-19 07:54:11,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13100 conditions, 4097 events. 2560/4097 cut-off events. For 4377/4381 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 25023 event pairs, 1076 based on Foata normal form. 32/3766 useless extension candidates. Maximal degree in co-relation 13090. Up to 2552 conditions per place. [2023-11-19 07:54:11,481 INFO L140 encePairwiseOnDemand]: 356/359 looper letters, 63 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2023-11-19 07:54:11,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 453 flow [2023-11-19 07:54:11,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:11,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:54:11,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 578 transitions. [2023-11-19 07:54:11,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025069637883008 [2023-11-19 07:54:11,484 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 578 transitions. [2023-11-19 07:54:11,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 578 transitions. [2023-11-19 07:54:11,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:11,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 578 transitions. [2023-11-19 07:54:11,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:11,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:11,491 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:11,491 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 247 flow. Second operand 4 states and 578 transitions. [2023-11-19 07:54:11,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 453 flow [2023-11-19 07:54:11,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 444 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:11,517 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 244 flow [2023-11-19 07:54:11,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2023-11-19 07:54:11,518 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -28 predicate places. [2023-11-19 07:54:11,518 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 244 flow [2023-11-19 07:54:11,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:11,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:11,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:11,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:54:11,519 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-19 07:54:11,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:11,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1245106287, now seen corresponding path program 1 times [2023-11-19 07:54:11,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:11,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316387133] [2023-11-19 07:54:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:11,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:11,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:11,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316387133] [2023-11-19 07:54:11,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316387133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:11,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:11,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:54:11,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024550360] [2023-11-19 07:54:11,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:11,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:11,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:11,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:11,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:11,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 359 [2023-11-19 07:54:11,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:11,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:11,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 359 [2023-11-19 07:54:11,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:12,469 INFO L124 PetriNetUnfolderBase]: 2531/4056 cut-off events. [2023-11-19 07:54:12,470 INFO L125 PetriNetUnfolderBase]: For 4271/4275 co-relation queries the response was YES. [2023-11-19 07:54:12,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12936 conditions, 4056 events. 2531/4056 cut-off events. For 4271/4275 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 24787 event pairs, 1059 based on Foata normal form. 12/3705 useless extension candidates. Maximal degree in co-relation 12927. Up to 2541 conditions per place. [2023-11-19 07:54:12,504 INFO L140 encePairwiseOnDemand]: 356/359 looper letters, 62 selfloop transitions, 5 changer transitions 0/70 dead transitions. [2023-11-19 07:54:12,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 70 transitions, 446 flow [2023-11-19 07:54:12,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:12,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-11-19 07:54:12,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4168987929433612 [2023-11-19 07:54:12,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-11-19 07:54:12,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-11-19 07:54:12,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:12,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-11-19 07:54:12,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:12,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:12,513 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:12,513 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 244 flow. Second operand 3 states and 449 transitions. [2023-11-19 07:54:12,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 70 transitions, 446 flow [2023-11-19 07:54:12,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 70 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:12,539 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 255 flow [2023-11-19 07:54:12,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-11-19 07:54:12,541 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -27 predicate places. [2023-11-19 07:54:12,541 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 255 flow [2023-11-19 07:54:12,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:12,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:12,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:12,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:54:12,542 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-19 07:54:12,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:12,543 INFO L85 PathProgramCache]: Analyzing trace with hash -274925969, now seen corresponding path program 1 times [2023-11-19 07:54:12,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:12,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86162450] [2023-11-19 07:54:12,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:12,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:12,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:12,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86162450] [2023-11-19 07:54:12,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86162450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:12,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:12,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:12,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332814387] [2023-11-19 07:54:12,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:12,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:12,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:12,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:12,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:12,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 359 [2023-11-19 07:54:12,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 255 flow. Second operand has 3 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) [2023-11-19 07:54:12,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:12,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 359 [2023-11-19 07:54:12,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:13,247 INFO L124 PetriNetUnfolderBase]: 1076/1830 cut-off events. [2023-11-19 07:54:13,248 INFO L125 PetriNetUnfolderBase]: For 1754/1759 co-relation queries the response was YES. [2023-11-19 07:54:13,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6079 conditions, 1830 events. 1076/1830 cut-off events. For 1754/1759 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10103 event pairs, 306 based on Foata normal form. 21/1689 useless extension candidates. Maximal degree in co-relation 6069. Up to 1692 conditions per place. [2023-11-19 07:54:13,261 INFO L140 encePairwiseOnDemand]: 354/359 looper letters, 56 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2023-11-19 07:54:13,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 435 flow [2023-11-19 07:54:13,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:13,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-11-19 07:54:13,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39740018570102137 [2023-11-19 07:54:13,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-11-19 07:54:13,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-11-19 07:54:13,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:13,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-11-19 07:54:13,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:13,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:13,270 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:13,270 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 255 flow. Second operand 3 states and 428 transitions. [2023-11-19 07:54:13,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 435 flow [2023-11-19 07:54:13,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:13,278 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 271 flow [2023-11-19 07:54:13,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-11-19 07:54:13,280 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -26 predicate places. [2023-11-19 07:54:13,280 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 271 flow [2023-11-19 07:54:13,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-19 07:54:13,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:13,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:13,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:54:13,281 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-19 07:54:13,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:13,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1613618250, now seen corresponding path program 1 times [2023-11-19 07:54:13,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:13,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393211308] [2023-11-19 07:54:13,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:13,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:13,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:13,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:13,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393211308] [2023-11-19 07:54:13,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393211308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:13,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:13,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:13,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450949481] [2023-11-19 07:54:13,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:13,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:13,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:13,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:13,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:13,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 359 [2023-11-19 07:54:13,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:13,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:13,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 359 [2023-11-19 07:54:13,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:14,163 INFO L124 PetriNetUnfolderBase]: 1637/2912 cut-off events. [2023-11-19 07:54:14,164 INFO L125 PetriNetUnfolderBase]: For 2763/2767 co-relation queries the response was YES. [2023-11-19 07:54:14,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9901 conditions, 2912 events. 1637/2912 cut-off events. For 2763/2767 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 18297 event pairs, 348 based on Foata normal form. 18/2674 useless extension candidates. Maximal degree in co-relation 9890. Up to 1562 conditions per place. [2023-11-19 07:54:14,181 INFO L140 encePairwiseOnDemand]: 356/359 looper letters, 105 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2023-11-19 07:54:14,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 109 transitions, 770 flow [2023-11-19 07:54:14,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:54:14,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 583 transitions. [2023-11-19 07:54:14,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40598885793871864 [2023-11-19 07:54:14,185 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 583 transitions. [2023-11-19 07:54:14,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 583 transitions. [2023-11-19 07:54:14,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:14,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 583 transitions. [2023-11-19 07:54:14,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:14,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:14,192 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:14,192 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 271 flow. Second operand 4 states and 583 transitions. [2023-11-19 07:54:14,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 109 transitions, 770 flow [2023-11-19 07:54:14,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 109 transitions, 761 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:14,204 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 280 flow [2023-11-19 07:54:14,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-11-19 07:54:14,205 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -22 predicate places. [2023-11-19 07:54:14,206 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 280 flow [2023-11-19 07:54:14,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:14,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:14,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:14,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:54:14,207 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-19 07:54:14,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:14,207 INFO L85 PathProgramCache]: Analyzing trace with hash -143007954, now seen corresponding path program 2 times [2023-11-19 07:54:14,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:14,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235048609] [2023-11-19 07:54:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:14,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:14,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:14,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235048609] [2023-11-19 07:54:14,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235048609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:14,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:14,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:14,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649485211] [2023-11-19 07:54:14,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:14,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:14,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:14,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:14,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:14,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 359 [2023-11-19 07:54:14,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:14,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:14,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 359 [2023-11-19 07:54:14,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:14,700 INFO L124 PetriNetUnfolderBase]: 345/707 cut-off events. [2023-11-19 07:54:14,700 INFO L125 PetriNetUnfolderBase]: For 695/696 co-relation queries the response was YES. [2023-11-19 07:54:14,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 707 events. 345/707 cut-off events. For 695/696 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3569 event pairs, 89 based on Foata normal form. 36/687 useless extension candidates. Maximal degree in co-relation 2418. Up to 425 conditions per place. [2023-11-19 07:54:14,705 INFO L140 encePairwiseOnDemand]: 354/359 looper letters, 57 selfloop transitions, 7 changer transitions 0/68 dead transitions. [2023-11-19 07:54:14,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 462 flow [2023-11-19 07:54:14,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:14,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:54:14,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 567 transitions. [2023-11-19 07:54:14,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3948467966573816 [2023-11-19 07:54:14,709 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 567 transitions. [2023-11-19 07:54:14,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 567 transitions. [2023-11-19 07:54:14,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:14,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 567 transitions. [2023-11-19 07:54:14,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:14,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:14,716 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:14,716 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 280 flow. Second operand 4 states and 567 transitions. [2023-11-19 07:54:14,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 462 flow [2023-11-19 07:54:14,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 68 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:14,721 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 266 flow [2023-11-19 07:54:14,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2023-11-19 07:54:14,723 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -20 predicate places. [2023-11-19 07:54:14,724 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 266 flow [2023-11-19 07:54:14,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:14,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:14,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:14,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:54:14,725 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-19 07:54:14,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:14,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1422306868, now seen corresponding path program 1 times [2023-11-19 07:54:14,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:14,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446380118] [2023-11-19 07:54:14,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:14,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:17,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:17,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446380118] [2023-11-19 07:54:17,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446380118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:17,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:17,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:54:17,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304456591] [2023-11-19 07:54:17,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:17,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:54:17,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:17,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:54:17,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:54:18,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 359 [2023-11-19 07:54:18,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 266 flow. Second operand has 9 states, 9 states have (on average 114.77777777777777) internal successors, (1033), 9 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:18,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:18,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 359 [2023-11-19 07:54:18,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:19,467 INFO L124 PetriNetUnfolderBase]: 680/1404 cut-off events. [2023-11-19 07:54:19,467 INFO L125 PetriNetUnfolderBase]: For 1976/1976 co-relation queries the response was YES. [2023-11-19 07:54:19,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 1404 events. 680/1404 cut-off events. For 1976/1976 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8421 event pairs, 114 based on Foata normal form. 7/1352 useless extension candidates. Maximal degree in co-relation 5026. Up to 713 conditions per place. [2023-11-19 07:54:19,474 INFO L140 encePairwiseOnDemand]: 343/359 looper letters, 112 selfloop transitions, 34 changer transitions 1/151 dead transitions. [2023-11-19 07:54:19,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 151 transitions, 1086 flow [2023-11-19 07:54:19,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:54:19,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:54:19,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1463 transitions. [2023-11-19 07:54:19,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3396007428040854 [2023-11-19 07:54:19,483 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1463 transitions. [2023-11-19 07:54:19,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1463 transitions. [2023-11-19 07:54:19,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:19,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1463 transitions. [2023-11-19 07:54:19,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 121.91666666666667) internal successors, (1463), 12 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:19,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 359.0) internal successors, (4667), 13 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:19,499 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 359.0) internal successors, (4667), 13 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:19,499 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 266 flow. Second operand 12 states and 1463 transitions. [2023-11-19 07:54:19,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 151 transitions, 1086 flow [2023-11-19 07:54:19,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 151 transitions, 1002 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:19,506 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 483 flow [2023-11-19 07:54:19,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=483, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2023-11-19 07:54:19,507 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -8 predicate places. [2023-11-19 07:54:19,507 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 483 flow [2023-11-19 07:54:19,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.77777777777777) internal successors, (1033), 9 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:19,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:19,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:19,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:54:19,509 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-19 07:54:19,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:19,509 INFO L85 PathProgramCache]: Analyzing trace with hash -108535748, now seen corresponding path program 2 times [2023-11-19 07:54:19,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:19,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872411767] [2023-11-19 07:54:19,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:19,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:22,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:22,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872411767] [2023-11-19 07:54:22,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872411767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:22,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:22,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:54:22,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386319938] [2023-11-19 07:54:22,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:22,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:54:22,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:22,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:54:22,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72