./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_power.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_770f35af-8f07-4b58-81a9-959fd08587ec/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f35af-8f07-4b58-81a9-959fd08587ec/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_770f35af-8f07-4b58-81a9-959fd08587ec/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f35af-8f07-4b58-81a9-959fd08587ec/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f35af-8f07-4b58-81a9-959fd08587ec/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_770f35af-8f07-4b58-81a9-959fd08587ec/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 8cac3035eaeb2816ec7d27d980ff4447cc10ff3a409a1a8662d4bf55d93fe6d5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:59:49,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:59:49,429 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f35af-8f07-4b58-81a9-959fd08587ec/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:59:49,440 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:59:49,441 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:59:49,477 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:59:49,479 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:59:49,479 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:59:49,480 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:59:49,485 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:59:49,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:59:49,488 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:59:49,488 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:59:49,490 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:59:49,490 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:59:49,491 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:59:49,491 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:59:49,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:59:49,492 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:59:49,493 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:59:49,493 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:59:49,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:59:49,494 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:59:49,495 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:59:49,495 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:59:49,496 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:59:49,497 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:59:49,497 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:59:49,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:59:49,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:49,500 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:59:49,500 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:59:49,500 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:59:49,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:59:49,501 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:59:49,501 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:59:49,502 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:59:49,502 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:59:49,502 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_770f35af-8f07-4b58-81a9-959fd08587ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f35af-8f07-4b58-81a9-959fd08587ec/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cac3035eaeb2816ec7d27d980ff4447cc10ff3a409a1a8662d4bf55d93fe6d5 [2023-11-19 07:59:49,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:59:49,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:59:49,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:59:49,787 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:59:49,787 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:59:49,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f35af-8f07-4b58-81a9-959fd08587ec/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/thin002_power.oepc.i [2023-11-19 07:59:52,917 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:59:53,298 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:59:53,299 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f35af-8f07-4b58-81a9-959fd08587ec/sv-benchmarks/c/pthread-wmm/thin002_power.oepc.i [2023-11-19 07:59:53,324 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f35af-8f07-4b58-81a9-959fd08587ec/bin/uautomizer-verify-uCwYo4JHxu/data/0b072db4c/0a185850cd68409eafce28554377b081/FLAG83966cb16 [2023-11-19 07:59:53,345 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f35af-8f07-4b58-81a9-959fd08587ec/bin/uautomizer-verify-uCwYo4JHxu/data/0b072db4c/0a185850cd68409eafce28554377b081 [2023-11-19 07:59:53,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:59:53,353 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:59:53,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:53,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:59:53,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:59:53,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:53" (1/1) ... [2023-11-19 07:59:53,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cbf64d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:53, skipping insertion in model container [2023-11-19 07:59:53,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:53" (1/1) ... [2023-11-19 07:59:53,455 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:59:53,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:53,956 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:59:54,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:54,101 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:59:54,101 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:59:54,109 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:59:54,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:54 WrapperNode [2023-11-19 07:59:54,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:54,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:54,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:59:54,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:59:54,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:54" (1/1) ... [2023-11-19 07:59:54,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:54" (1/1) ... [2023-11-19 07:59:54,166 INFO L138 Inliner]: procedures = 177, calls = 83, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 157 [2023-11-19 07:59:54,166 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:54,167 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:59:54,167 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:59:54,167 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:59:54,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:54" (1/1) ... [2023-11-19 07:59:54,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:54" (1/1) ... [2023-11-19 07:59:54,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:54" (1/1) ... [2023-11-19 07:59:54,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:54" (1/1) ... [2023-11-19 07:59:54,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:54" (1/1) ... [2023-11-19 07:59:54,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:54" (1/1) ... [2023-11-19 07:59:54,202 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:54" (1/1) ... [2023-11-19 07:59:54,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:54" (1/1) ... [2023-11-19 07:59:54,210 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:59:54,211 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:59:54,212 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:59:54,212 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:59:54,213 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:54" (1/1) ... [2023-11-19 07:59:54,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:54,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f35af-8f07-4b58-81a9-959fd08587ec/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:54,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f35af-8f07-4b58-81a9-959fd08587ec/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:59:54,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770f35af-8f07-4b58-81a9-959fd08587ec/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:59:54,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:59:54,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:59:54,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:59:54,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:59:54,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:59:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:59:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:59:54,332 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:59:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:59:54,332 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:59:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:59:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:59:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:59:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:59:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:59:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:59:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:59:54,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:59:54,338 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 07:59:54,509 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:59:54,511 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:59:55,173 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:59:55,781 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:59:55,781 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:59:55,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:55 BoogieIcfgContainer [2023-11-19 07:59:55,786 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:59:55,789 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:59:55,789 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:59:55,793 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:59:55,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:53" (1/3) ... [2023-11-19 07:59:55,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a02daa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:55, skipping insertion in model container [2023-11-19 07:59:55,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:54" (2/3) ... [2023-11-19 07:59:55,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a02daa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:55, skipping insertion in model container [2023-11-19 07:59:55,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:55" (3/3) ... [2023-11-19 07:59:55,796 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_power.oepc.i [2023-11-19 07:59:55,817 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:59:55,817 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2023-11-19 07:59:55,818 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:59:56,043 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:59:56,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 216 transitions, 448 flow [2023-11-19 07:59:56,258 INFO L124 PetriNetUnfolderBase]: 21/212 cut-off events. [2023-11-19 07:59:56,259 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:59:56,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 212 events. 21/212 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 290 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 150. Up to 4 conditions per place. [2023-11-19 07:59:56,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 216 transitions, 448 flow [2023-11-19 07:59:56,290 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 212 transitions, 436 flow [2023-11-19 07:59:56,295 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:59:56,305 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 212 transitions, 436 flow [2023-11-19 07:59:56,308 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 212 transitions, 436 flow [2023-11-19 07:59:56,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 212 transitions, 436 flow [2023-11-19 07:59:56,376 INFO L124 PetriNetUnfolderBase]: 21/212 cut-off events. [2023-11-19 07:59:56,377 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:59:56,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 212 events. 21/212 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 279 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 150. Up to 4 conditions per place. [2023-11-19 07:59:56,389 INFO L119 LiptonReduction]: Number of co-enabled transitions 11532 [2023-11-19 08:00:13,654 INFO L134 LiptonReduction]: Checked pairs total: 32282 [2023-11-19 08:00:13,655 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-11-19 08:00:13,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:13,679 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;@365b4844, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:13,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2023-11-19 08:00:13,682 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:00:13,682 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 08:00:13,682 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:13,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:13,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 08:00:13,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-19 08:00:13,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:13,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1130, now seen corresponding path program 1 times [2023-11-19 08:00:13,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:13,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224007238] [2023-11-19 08:00:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:13,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:13,840 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 08:00:13,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:13,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224007238] [2023-11-19 08:00:13,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224007238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:13,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:13,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 08:00:13,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828283712] [2023-11-19 08:00:13,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:13,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:00:13,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:13,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:00:13,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:00:13,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 435 [2023-11-19 08:00:13,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 158 flow. Second operand has 2 states, 2 states have (on average 157.5) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 08:00:13,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:13,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 435 [2023-11-19 08:00:13,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:24,547 INFO L124 PetriNetUnfolderBase]: 44778/59135 cut-off events. [2023-11-19 08:00:24,548 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-19 08:00:24,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118447 conditions, 59135 events. 44778/59135 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 2370. Compared 334158 event pairs, 44778 based on Foata normal form. 0/38668 useless extension candidates. Maximal degree in co-relation 118435. Up to 59095 conditions per place. [2023-11-19 08:00:25,018 INFO L140 encePairwiseOnDemand]: 411/435 looper letters, 45 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2023-11-19 08:00:25,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 196 flow [2023-11-19 08:00:25,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:00:25,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:00:25,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 383 transitions. [2023-11-19 08:00:25,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44022988505747124 [2023-11-19 08:00:25,357 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 383 transitions. [2023-11-19 08:00:25,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 383 transitions. [2023-11-19 08:00:25,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:25,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 383 transitions. [2023-11-19 08:00:25,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 191.5) internal successors, (383), 2 states have internal predecessors, (383), 0 states have call successors, (0), 0 states 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 08:00:25,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 435.0) internal successors, (1305), 3 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states 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 08:00:25,388 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 435.0) internal successors, (1305), 3 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states 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 08:00:25,390 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 158 flow. Second operand 2 states and 383 transitions. [2023-11-19 08:00:25,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 196 flow [2023-11-19 08:00:25,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 08:00:25,407 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 102 flow [2023-11-19 08:00:25,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=435, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2023-11-19 08:00:25,417 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -27 predicate places. [2023-11-19 08:00:25,417 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 102 flow [2023-11-19 08:00:25,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 157.5) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 08:00:25,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:25,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:00:25,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:00:25,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-19 08:00:25,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:25,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1113050, now seen corresponding path program 1 times [2023-11-19 08:00:25,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:25,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762360850] [2023-11-19 08:00:25,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:25,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:25,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:25,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762360850] [2023-11-19 08:00:25,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762360850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:25,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:25,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:00:25,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660734337] [2023-11-19 08:00:25,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:25,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:25,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:25,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:25,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:26,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 435 [2023-11-19 08:00:26,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 08:00:26,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:26,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 435 [2023-11-19 08:00:26,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:30,817 INFO L124 PetriNetUnfolderBase]: 22258/29648 cut-off events. [2023-11-19 08:00:30,817 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:30,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59436 conditions, 29648 events. 22258/29648 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 157534 event pairs, 22258 based on Foata normal form. 0/22032 useless extension candidates. Maximal degree in co-relation 59433. Up to 29615 conditions per place. [2023-11-19 08:00:30,988 INFO L140 encePairwiseOnDemand]: 428/435 looper letters, 38 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-11-19 08:00:30,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 41 transitions, 168 flow [2023-11-19 08:00:30,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:30,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2023-11-19 08:00:30,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931034482758621 [2023-11-19 08:00:30,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2023-11-19 08:00:30,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2023-11-19 08:00:30,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:30,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2023-11-19 08:00:30,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 08:00:31,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 435.0) internal successors, (1740), 4 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states 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 08:00:31,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 435.0) internal successors, (1740), 4 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states 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 08:00:31,003 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 102 flow. Second operand 3 states and 513 transitions. [2023-11-19 08:00:31,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 41 transitions, 168 flow [2023-11-19 08:00:31,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:00:31,006 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 92 flow [2023-11-19 08:00:31,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=435, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-11-19 08:00:31,007 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -31 predicate places. [2023-11-19 08:00:31,008 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 92 flow [2023-11-19 08:00:31,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 08:00:31,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:31,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:00:31,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:00:31,010 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-19 08:00:31,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:31,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1113049, now seen corresponding path program 1 times [2023-11-19 08:00:31,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:31,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787437106] [2023-11-19 08:00:31,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:31,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:31,158 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 08:00:31,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:31,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787437106] [2023-11-19 08:00:31,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787437106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:31,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:31,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:00:31,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698143689] [2023-11-19 08:00:31,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:31,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:31,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:31,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:31,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:31,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 435 [2023-11-19 08:00:31,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states 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 08:00:31,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:31,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 435 [2023-11-19 08:00:31,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:34,903 INFO L124 PetriNetUnfolderBase]: 16866/23433 cut-off events. [2023-11-19 08:00:34,903 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:34,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46574 conditions, 23433 events. 16866/23433 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 135181 event pairs, 9618 based on Foata normal form. 0/20236 useless extension candidates. Maximal degree in co-relation 46570. Up to 12592 conditions per place. [2023-11-19 08:00:35,030 INFO L140 encePairwiseOnDemand]: 420/435 looper letters, 44 selfloop transitions, 9 changer transitions 0/55 dead transitions. [2023-11-19 08:00:35,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 55 transitions, 226 flow [2023-11-19 08:00:35,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-11-19 08:00:35,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946360153256705 [2023-11-19 08:00:35,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-11-19 08:00:35,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-11-19 08:00:35,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:35,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-11-19 08:00:35,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states 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 08:00:35,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 435.0) internal successors, (1740), 4 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states 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 08:00:35,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 435.0) internal successors, (1740), 4 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states 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 08:00:35,042 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 92 flow. Second operand 3 states and 515 transitions. [2023-11-19 08:00:35,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 55 transitions, 226 flow [2023-11-19 08:00:35,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:00:35,046 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 159 flow [2023-11-19 08:00:35,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=435, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-11-19 08:00:35,048 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -30 predicate places. [2023-11-19 08:00:35,048 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 159 flow [2023-11-19 08:00:35,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states 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 08:00:35,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:35,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:35,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:00:35,055 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-19 08:00:35,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash -983913470, now seen corresponding path program 1 times [2023-11-19 08:00:35,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:35,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485283938] [2023-11-19 08:00:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:35,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:35,798 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 08:00:35,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:35,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485283938] [2023-11-19 08:00:35,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485283938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:35,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:35,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:35,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906420891] [2023-11-19 08:00:35,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:35,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:00:35,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:35,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:00:35,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:35,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 435 [2023-11-19 08:00:35,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 08:00:35,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:35,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 435 [2023-11-19 08:00:35,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:40,134 INFO L124 PetriNetUnfolderBase]: 16795/23361 cut-off events. [2023-11-19 08:00:40,135 INFO L125 PetriNetUnfolderBase]: For 4782/4782 co-relation queries the response was YES. [2023-11-19 08:00:40,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57889 conditions, 23361 events. 16795/23361 cut-off events. For 4782/4782 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 136325 event pairs, 11034 based on Foata normal form. 0/21476 useless extension candidates. Maximal degree in co-relation 57884. Up to 21388 conditions per place. [2023-11-19 08:00:40,269 INFO L140 encePairwiseOnDemand]: 428/435 looper letters, 85 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2023-11-19 08:00:40,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 99 transitions, 543 flow [2023-11-19 08:00:40,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:00:40,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:00:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 670 transitions. [2023-11-19 08:00:40,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3850574712643678 [2023-11-19 08:00:40,277 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 670 transitions. [2023-11-19 08:00:40,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 670 transitions. [2023-11-19 08:00:40,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:40,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 670 transitions. [2023-11-19 08:00:40,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 167.5) internal successors, (670), 4 states have internal predecessors, (670), 0 states have call successors, (0), 0 states 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 08:00:40,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 435.0) internal successors, (2175), 5 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states 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 08:00:40,289 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 435.0) internal successors, (2175), 5 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states 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 08:00:40,290 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 159 flow. Second operand 4 states and 670 transitions. [2023-11-19 08:00:40,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 99 transitions, 543 flow [2023-11-19 08:00:40,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 99 transitions, 503 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:00:40,377 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 238 flow [2023-11-19 08:00:40,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=435, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2023-11-19 08:00:40,380 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -27 predicate places. [2023-11-19 08:00:40,380 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 238 flow [2023-11-19 08:00:40,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 08:00:40,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:40,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:40,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:00:40,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-19 08:00:40,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:40,383 INFO L85 PathProgramCache]: Analyzing trace with hash -983913875, now seen corresponding path program 1 times [2023-11-19 08:00:40,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:40,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23533061] [2023-11-19 08:00:40,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:40,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:40,511 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 08:00:40,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:40,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23533061] [2023-11-19 08:00:40,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23533061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:40,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:40,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:00:40,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376989729] [2023-11-19 08:00:40,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:40,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:40,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:40,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:40,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:40,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 435 [2023-11-19 08:00:40,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states 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 08:00:40,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:40,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 435 [2023-11-19 08:00:40,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand