./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b376d7c7-caec-424a-a9ce-c04123b56a38/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b376d7c7-caec-424a-a9ce-c04123b56a38/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_b376d7c7-caec-424a-a9ce-c04123b56a38/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b376d7c7-caec-424a-a9ce-c04123b56a38/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b376d7c7-caec-424a-a9ce-c04123b56a38/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_b376d7c7-caec-424a-a9ce-c04123b56a38/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 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:35,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:35,501 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b376d7c7-caec-424a-a9ce-c04123b56a38/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 08:00:35,507 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:35,508 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:35,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:35,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:35,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:35,557 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:00:35,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:00:35,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:35,564 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:35,564 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:35,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:35,567 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:00:35,567 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:35,568 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:00:35,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:35,569 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:00:35,570 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:00:35,570 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:00:35,571 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:00:35,571 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:00:35,572 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:00:35,573 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:00:35,573 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:35,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:35,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:35,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:00:35,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:35,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:35,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:00:35,577 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:35,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:00:35,577 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:00:35,577 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:00:35,578 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:00:35,578 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:00:35,585 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_b376d7c7-caec-424a-a9ce-c04123b56a38/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b376d7c7-caec-424a-a9ce-c04123b56a38/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa [2023-11-19 08:00:35,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:35,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:35,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:35,963 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:35,964 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:35,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b376d7c7-caec-424a-a9ce-c04123b56a38/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-19 08:00:39,213 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:39,628 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:39,629 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b376d7c7-caec-424a-a9ce-c04123b56a38/sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-19 08:00:39,654 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b376d7c7-caec-424a-a9ce-c04123b56a38/bin/uautomizer-verify-uCwYo4JHxu/data/bce4942ca/593198330015439ab3cd452b90418f95/FLAG41b5db3e9 [2023-11-19 08:00:39,669 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b376d7c7-caec-424a-a9ce-c04123b56a38/bin/uautomizer-verify-uCwYo4JHxu/data/bce4942ca/593198330015439ab3cd452b90418f95 [2023-11-19 08:00:39,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:39,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:39,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:39,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:39,684 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:39,686 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,690 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f5c23ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:39, skipping insertion in model container [2023-11-19 08:00:39,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,769 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:40,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:40,243 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:40,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:40,359 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:00:40,359 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:00:40,367 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:40,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40 WrapperNode [2023-11-19 08:00:40,368 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:40,369 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:40,369 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:40,369 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:40,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,433 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 159 [2023-11-19 08:00:40,434 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:40,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:40,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:40,435 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:40,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,464 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,492 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,496 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:40,498 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:40,498 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:40,498 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:40,499 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:40,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b376d7c7-caec-424a-a9ce-c04123b56a38/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:40,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b376d7c7-caec-424a-a9ce-c04123b56a38/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:40,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b376d7c7-caec-424a-a9ce-c04123b56a38/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:00:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:00:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:00:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:00:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:00:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 08:00:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 08:00:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 08:00:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 08:00:40,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:00:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:00:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:40,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:40,637 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 08:00:40,834 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:40,838 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:41,399 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:41,650 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:41,650 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:00:41,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:41 BoogieIcfgContainer [2023-11-19 08:00:41,657 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:41,661 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:00:41,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:00:41,666 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:00:41,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:39" (1/3) ... [2023-11-19 08:00:41,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf24ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:41, skipping insertion in model container [2023-11-19 08:00:41,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (2/3) ... [2023-11-19 08:00:41,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf24ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:41, skipping insertion in model container [2023-11-19 08:00:41,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:41" (3/3) ... [2023-11-19 08:00:41,671 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-19 08:00:41,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:00:41,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-19 08:00:41,697 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:00:41,781 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:00:41,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 110 transitions, 228 flow [2023-11-19 08:00:41,931 INFO L124 PetriNetUnfolderBase]: 5/108 cut-off events. [2023-11-19 08:00:41,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:41,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 108 events. 5/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2023-11-19 08:00:41,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 110 transitions, 228 flow [2023-11-19 08:00:41,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 108 transitions, 222 flow [2023-11-19 08:00:41,948 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:00:41,967 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 108 transitions, 222 flow [2023-11-19 08:00:41,973 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 108 transitions, 222 flow [2023-11-19 08:00:41,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 108 transitions, 222 flow [2023-11-19 08:00:42,029 INFO L124 PetriNetUnfolderBase]: 5/108 cut-off events. [2023-11-19 08:00:42,030 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:42,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 108 events. 5/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2023-11-19 08:00:42,035 INFO L119 LiptonReduction]: Number of co-enabled transitions 1896 [2023-11-19 08:00:48,671 INFO L134 LiptonReduction]: Checked pairs total: 5026 [2023-11-19 08:00:48,671 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-11-19 08:00:48,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:48,697 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;@462ad699, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:48,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 08:00:48,700 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:00:48,700 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 08:00:48,700 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:48,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:48,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 08:00:48,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:00:48,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:48,708 INFO L85 PathProgramCache]: Analyzing trace with hash 590, now seen corresponding path program 1 times [2023-11-19 08:00:48,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:48,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528434383] [2023-11-19 08:00:48,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:48,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:48,860 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 08:00:48,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:48,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528434383] [2023-11-19 08:00:48,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528434383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:48,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:48,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 08:00:48,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136500183] [2023-11-19 08:00:48,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:48,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:00:48,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:48,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:00:48,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:00:48,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 229 [2023-11-19 08:00:48,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 08:00:48,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:48,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 229 [2023-11-19 08:00:48,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:49,177 INFO L124 PetriNetUnfolderBase]: 335/567 cut-off events. [2023-11-19 08:00:49,178 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 08:00:49,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 567 events. 335/567 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2281 event pairs, 335 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 1139. Up to 565 conditions per place. [2023-11-19 08:00:49,186 INFO L140 encePairwiseOnDemand]: 225/229 looper letters, 19 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2023-11-19 08:00:49,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 84 flow [2023-11-19 08:00:49,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:00:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:00:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 209 transitions. [2023-11-19 08:00:49,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45633187772925765 [2023-11-19 08:00:49,210 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 209 transitions. [2023-11-19 08:00:49,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 209 transitions. [2023-11-19 08:00:49,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:49,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 209 transitions. [2023-11-19 08:00:49,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 104.5) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 08:00:49,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states 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 08:00:49,228 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states 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 08:00:49,230 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 2 states and 209 transitions. [2023-11-19 08:00:49,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 84 flow [2023-11-19 08:00:49,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 82 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:00:49,234 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 44 flow [2023-11-19 08:00:49,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2023-11-19 08:00:49,241 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -5 predicate places. [2023-11-19 08:00:49,241 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 44 flow [2023-11-19 08:00:49,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 08:00:49,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:49,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:00:49,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:00:49,243 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:00:49,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:49,244 INFO L85 PathProgramCache]: Analyzing trace with hash 556767580, now seen corresponding path program 1 times [2023-11-19 08:00:49,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:49,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807194091] [2023-11-19 08:00:49,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:49,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:49,764 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 08:00:49,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:49,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807194091] [2023-11-19 08:00:49,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807194091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:49,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:49,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:00:49,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613730211] [2023-11-19 08:00:49,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:49,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:49,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:49,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:49,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:49,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 229 [2023-11-19 08:00:49,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 08:00:49,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:49,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 229 [2023-11-19 08:00:49,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:50,011 INFO L124 PetriNetUnfolderBase]: 275/504 cut-off events. [2023-11-19 08:00:50,012 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:50,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 504 events. 275/504 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2183 event pairs, 35 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 986. Up to 385 conditions per place. [2023-11-19 08:00:50,019 INFO L140 encePairwiseOnDemand]: 226/229 looper letters, 24 selfloop transitions, 2 changer transitions 2/29 dead transitions. [2023-11-19 08:00:50,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 29 transitions, 118 flow [2023-11-19 08:00:50,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:50,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-11-19 08:00:50,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44395924308588064 [2023-11-19 08:00:50,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-11-19 08:00:50,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-11-19 08:00:50,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:50,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-11-19 08:00:50,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 08:00:50,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states 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 08:00:50,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states 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 08:00:50,042 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 44 flow. Second operand 3 states and 305 transitions. [2023-11-19 08:00:50,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 29 transitions, 118 flow [2023-11-19 08:00:50,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:00:50,048 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 44 flow [2023-11-19 08:00:50,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-11-19 08:00:50,049 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -4 predicate places. [2023-11-19 08:00:50,050 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 44 flow [2023-11-19 08:00:50,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 08:00:50,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:50,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:50,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:00:50,053 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:00:50,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:50,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1817206298, now seen corresponding path program 1 times [2023-11-19 08:00:50,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:50,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19826044] [2023-11-19 08:00:50,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:50,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:50,673 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 08:00:50,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:50,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19826044] [2023-11-19 08:00:50,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19826044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:50,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:50,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:50,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801130154] [2023-11-19 08:00:50,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:50,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:00:50,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:50,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:50,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:00:50,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 229 [2023-11-19 08:00:50,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states 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 08:00:50,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:50,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 229 [2023-11-19 08:00:50,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:51,016 INFO L124 PetriNetUnfolderBase]: 274/491 cut-off events. [2023-11-19 08:00:51,017 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-11-19 08:00:51,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1040 conditions, 491 events. 274/491 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2016 event pairs, 232 based on Foata normal form. 0/472 useless extension candidates. Maximal degree in co-relation 1036. Up to 300 conditions per place. [2023-11-19 08:00:51,022 INFO L140 encePairwiseOnDemand]: 225/229 looper letters, 28 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-11-19 08:00:51,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 32 transitions, 138 flow [2023-11-19 08:00:51,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:00:51,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:00:51,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2023-11-19 08:00:51,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3930131004366812 [2023-11-19 08:00:51,025 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2023-11-19 08:00:51,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2023-11-19 08:00:51,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:51,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2023-11-19 08:00:51,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states 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 08:00:51,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states 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 08:00:51,033 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states 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 08:00:51,033 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 44 flow. Second operand 4 states and 360 transitions. [2023-11-19 08:00:51,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 32 transitions, 138 flow [2023-11-19 08:00:51,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 32 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:00:51,036 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 60 flow [2023-11-19 08:00:51,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-11-19 08:00:51,038 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2023-11-19 08:00:51,038 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 60 flow [2023-11-19 08:00:51,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states 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 08:00:51,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:51,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:51,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:00:51,045 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:00:51,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:51,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1817206319, now seen corresponding path program 1 times [2023-11-19 08:00:51,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:51,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720301543] [2023-11-19 08:00:51,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:51,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:51,801 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 08:00:51,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:51,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720301543] [2023-11-19 08:00:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720301543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:51,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:51,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:51,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792027955] [2023-11-19 08:00:51,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:51,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:00:51,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:51,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:51,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:00:51,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 229 [2023-11-19 08:00:51,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 08:00:51,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:51,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 229 [2023-11-19 08:00:51,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:52,120 INFO L124 PetriNetUnfolderBase]: 309/558 cut-off events. [2023-11-19 08:00:52,120 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-19 08:00:52,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 558 events. 309/558 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2308 event pairs, 185 based on Foata normal form. 18/576 useless extension candidates. Maximal degree in co-relation 1185. Up to 403 conditions per place. [2023-11-19 08:00:52,125 INFO L140 encePairwiseOnDemand]: 220/229 looper letters, 26 selfloop transitions, 9 changer transitions 0/35 dead transitions. [2023-11-19 08:00:52,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 35 transitions, 162 flow [2023-11-19 08:00:52,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:00:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:00:52,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2023-11-19 08:00:52,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4093886462882096 [2023-11-19 08:00:52,128 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2023-11-19 08:00:52,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2023-11-19 08:00:52,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:52,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2023-11-19 08:00:52,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states 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 08:00:52,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states 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 08:00:52,133 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states 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 08:00:52,133 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 60 flow. Second operand 4 states and 375 transitions. [2023-11-19 08:00:52,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 35 transitions, 162 flow [2023-11-19 08:00:52,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:00:52,136 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 107 flow [2023-11-19 08:00:52,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-11-19 08:00:52,138 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2023-11-19 08:00:52,138 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 107 flow [2023-11-19 08:00:52,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 08:00:52,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:52,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:52,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:00:52,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:00:52,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:52,141 INFO L85 PathProgramCache]: Analyzing trace with hash -785760751, now seen corresponding path program 1 times [2023-11-19 08:00:52,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:52,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995238511] [2023-11-19 08:00:52,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:52,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:52,471 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 08:00:52,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:52,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995238511] [2023-11-19 08:00:52,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995238511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:52,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:52,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:00:52,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706702713] [2023-11-19 08:00:52,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:52,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:52,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:52,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:52,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:52,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 229 [2023-11-19 08:00:52,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 08:00:52,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:52,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 229 [2023-11-19 08:00:52,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:52,701 INFO L124 PetriNetUnfolderBase]: 289/526 cut-off events. [2023-11-19 08:00:52,701 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2023-11-19 08:00:52,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1430 conditions, 526 events. 289/526 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2144 event pairs, 89 based on Foata normal form. 12/538 useless extension candidates. Maximal degree in co-relation 1422. Up to 375 conditions per place. [2023-11-19 08:00:52,706 INFO L140 encePairwiseOnDemand]: 226/229 looper letters, 31 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-11-19 08:00:52,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 208 flow [2023-11-19 08:00:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:52,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-11-19 08:00:52,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366812227074236 [2023-11-19 08:00:52,709 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-11-19 08:00:52,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-11-19 08:00:52,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:52,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-11-19 08:00:52,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states 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 08:00:52,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states 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 08:00:52,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states 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 08:00:52,714 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 107 flow. Second operand 3 states and 300 transitions. [2023-11-19 08:00:52,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 208 flow [2023-11-19 08:00:52,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:00:52,717 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 115 flow [2023-11-19 08:00:52,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-11-19 08:00:52,720 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2023-11-19 08:00:52,720 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 115 flow [2023-11-19 08:00:52,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 08:00:52,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:52,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:52,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:00:52,721 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:00:52,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:52,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1909558008, now seen corresponding path program 1 times [2023-11-19 08:00:52,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:52,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958864178] [2023-11-19 08:00:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:52,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:53,621 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 08:00:53,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:53,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958864178] [2023-11-19 08:00:53,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958864178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:53,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:53,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:00:53,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225480993] [2023-11-19 08:00:53,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:53,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:53,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:53,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:53,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:53,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 229 [2023-11-19 08:00:53,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 115 flow. Second operand has 7 states, 7 states have (on average 80.42857142857143) internal successors, (563), 7 states have internal predecessors, (563), 0 states have call successors, (0), 0 states 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 08:00:53,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:53,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 229 [2023-11-19 08:00:53,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:53,989 INFO L124 PetriNetUnfolderBase]: 224/414 cut-off events. [2023-11-19 08:00:53,989 INFO L125 PetriNetUnfolderBase]: For 250/263 co-relation queries the response was YES. [2023-11-19 08:00:53,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1140 conditions, 414 events. 224/414 cut-off events. For 250/263 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1697 event pairs, 176 based on Foata normal form. 20/423 useless extension candidates. Maximal degree in co-relation 1130. Up to 394 conditions per place. [2023-11-19 08:00:53,994 INFO L140 encePairwiseOnDemand]: 225/229 looper letters, 18 selfloop transitions, 5 changer transitions 0/24 dead transitions. [2023-11-19 08:00:53,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 24 transitions, 142 flow [2023-11-19 08:00:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:00:53,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2023-11-19 08:00:53,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3650655021834061 [2023-11-19 08:00:53,998 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2023-11-19 08:00:53,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2023-11-19 08:00:53,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:53,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2023-11-19 08:00:54,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 08:00:54,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 08:00:54,007 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 08:00:54,008 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 115 flow. Second operand 5 states and 418 transitions. [2023-11-19 08:00:54,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 24 transitions, 142 flow [2023-11-19 08:00:54,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 133 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 08:00:54,012 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 94 flow [2023-11-19 08:00:54,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=94, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2023-11-19 08:00:54,015 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-11-19 08:00:54,015 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 94 flow [2023-11-19 08:00:54,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.42857142857143) internal successors, (563), 7 states have internal predecessors, (563), 0 states have call successors, (0), 0 states 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 08:00:54,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:54,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:54,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:00:54,017 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:00:54,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:54,017 INFO L85 PathProgramCache]: Analyzing trace with hash -489237554, now seen corresponding path program 1 times [2023-11-19 08:00:54,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:54,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320851484] [2023-11-19 08:00:54,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:54,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:55,987 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 08:00:55,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:55,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320851484] [2023-11-19 08:00:55,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320851484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:55,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:55,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:55,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934606627] [2023-11-19 08:00:55,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:55,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:00:55,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:55,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:00:55,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:00:56,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 229 [2023-11-19 08:00:56,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 94 flow. Second operand has 9 states, 9 states have (on average 84.22222222222223) internal successors, (758), 9 states have internal predecessors, (758), 0 states have call successors, (0), 0 states 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 08:00:56,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:56,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 229 [2023-11-19 08:00:56,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:56,680 INFO L124 PetriNetUnfolderBase]: 301/579 cut-off events. [2023-11-19 08:00:56,680 INFO L125 PetriNetUnfolderBase]: For 248/264 co-relation queries the response was YES. [2023-11-19 08:00:56,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1560 conditions, 579 events. 301/579 cut-off events. For 248/264 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2695 event pairs, 83 based on Foata normal form. 7/579 useless extension candidates. Maximal degree in co-relation 1551. Up to 368 conditions per place. [2023-11-19 08:00:56,687 INFO L140 encePairwiseOnDemand]: 218/229 looper letters, 41 selfloop transitions, 23 changer transitions 0/65 dead transitions. [2023-11-19 08:00:56,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 65 transitions, 369 flow [2023-11-19 08:00:56,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:00:56,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:00:56,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 726 transitions. [2023-11-19 08:00:56,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962882096069869 [2023-11-19 08:00:56,692 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 726 transitions. [2023-11-19 08:00:56,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 726 transitions. [2023-11-19 08:00:56,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:56,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 726 transitions. [2023-11-19 08:00:56,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.75) internal successors, (726), 8 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 08:00:56,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states 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 08:00:56,701 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states 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 08:00:56,702 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 94 flow. Second operand 8 states and 726 transitions. [2023-11-19 08:00:56,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 65 transitions, 369 flow [2023-11-19 08:00:56,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 65 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:00:56,706 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 268 flow [2023-11-19 08:00:56,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=268, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-11-19 08:00:56,707 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2023-11-19 08:00:56,707 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 268 flow [2023-11-19 08:00:56,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 84.22222222222223) internal successors, (758), 9 states have internal predecessors, (758), 0 states have call successors, (0), 0 states 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 08:00:56,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:56,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:56,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:00:56,709 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:00:56,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:56,709 INFO L85 PathProgramCache]: Analyzing trace with hash 466184476, now seen corresponding path program 2 times [2023-11-19 08:00:56,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:56,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676359483] [2023-11-19 08:00:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:56,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:57,698 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 08:00:57,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:57,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676359483] [2023-11-19 08:00:57,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676359483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:57,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:57,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:00:57,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480816503] [2023-11-19 08:00:57,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:57,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:00:57,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:57,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:00:57,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:00:57,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 229 [2023-11-19 08:00:57,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 268 flow. Second operand has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 08:00:57,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:57,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 229 [2023-11-19 08:00:57,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:58,170 INFO L124 PetriNetUnfolderBase]: 337/642 cut-off events. [2023-11-19 08:00:58,171 INFO L125 PetriNetUnfolderBase]: For 1229/1267 co-relation queries the response was YES. [2023-11-19 08:00:58,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2609 conditions, 642 events. 337/642 cut-off events. For 1229/1267 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3045 event pairs, 83 based on Foata normal form. 9/638 useless extension candidates. Maximal degree in co-relation 2595. Up to 472 conditions per place. [2023-11-19 08:00:58,179 INFO L140 encePairwiseOnDemand]: 220/229 looper letters, 41 selfloop transitions, 25 changer transitions 0/67 dead transitions. [2023-11-19 08:00:58,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 67 transitions, 562 flow [2023-11-19 08:00:58,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:00:58,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:00:58,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 566 transitions. [2023-11-19 08:00:58,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119359534206696 [2023-11-19 08:00:58,183 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 566 transitions. [2023-11-19 08:00:58,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 566 transitions. [2023-11-19 08:00:58,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:58,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 566 transitions. [2023-11-19 08:00:58,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.33333333333333) internal successors, (566), 6 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 08:00:58,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states 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 08:00:58,190 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states 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 08:00:58,191 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 268 flow. Second operand 6 states and 566 transitions. [2023-11-19 08:00:58,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 67 transitions, 562 flow [2023-11-19 08:00:58,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 544 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-19 08:00:58,199 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 447 flow [2023-11-19 08:00:58,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=447, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2023-11-19 08:00:58,200 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2023-11-19 08:00:58,201 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 447 flow [2023-11-19 08:00:58,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 08:00:58,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:58,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:58,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:00:58,202 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:00:58,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:58,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1021226206, now seen corresponding path program 3 times [2023-11-19 08:00:58,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:58,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601972896] [2023-11-19 08:00:58,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:58,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:59,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:59,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601972896] [2023-11-19 08:00:59,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601972896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:59,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:59,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:00:59,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594587782] [2023-11-19 08:00:59,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:59,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:00:59,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:59,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:00:59,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:00:59,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 229 [2023-11-19 08:00:59,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 447 flow. Second operand has 8 states, 8 states have (on average 89.375) internal successors, (715), 8 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:59,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:59,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 229 [2023-11-19 08:00:59,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:00,010 INFO L124 PetriNetUnfolderBase]: 349/673 cut-off events. [2023-11-19 08:01:00,010 INFO L125 PetriNetUnfolderBase]: For 2161/2213 co-relation queries the response was YES. [2023-11-19 08:01:00,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 673 events. 349/673 cut-off events. For 2161/2213 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3322 event pairs, 63 based on Foata normal form. 9/668 useless extension candidates. Maximal degree in co-relation 3109. Up to 382 conditions per place. [2023-11-19 08:01:00,020 INFO L140 encePairwiseOnDemand]: 223/229 looper letters, 63 selfloop transitions, 26 changer transitions 0/90 dead transitions. [2023-11-19 08:01:00,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 90 transitions, 900 flow [2023-11-19 08:01:00,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:01:00,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:01:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 666 transitions. [2023-11-19 08:01:00,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41547099189020587 [2023-11-19 08:01:00,024 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 666 transitions. [2023-11-19 08:01:00,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 666 transitions. [2023-11-19 08:01:00,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:00,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 666 transitions. [2023-11-19 08:01:00,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.14285714285714) internal successors, (666), 7 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 08:01:00,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 08:01:00,032 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 08:01:00,032 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 447 flow. Second operand 7 states and 666 transitions. [2023-11-19 08:01:00,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 90 transitions, 900 flow [2023-11-19 08:01:00,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 90 transitions, 884 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-19 08:01:00,048 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 596 flow [2023-11-19 08:01:00,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=596, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2023-11-19 08:01:00,049 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2023-11-19 08:01:00,049 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 596 flow [2023-11-19 08:01:00,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.375) internal successors, (715), 8 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:00,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:00,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:00,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:01:00,050 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:01:00,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:00,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1027113648, now seen corresponding path program 1 times [2023-11-19 08:01:00,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:00,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475536100] [2023-11-19 08:01:00,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:00,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:01,553 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 08:01:01,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:01,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475536100] [2023-11-19 08:01:01,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475536100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:01,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:01,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:01:01,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107115448] [2023-11-19 08:01:01,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:01,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:01:01,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:01,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:01:01,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:01:01,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 229 [2023-11-19 08:01:01,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 596 flow. Second operand has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states 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 08:01:01,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:01,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 229 [2023-11-19 08:01:01,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:02,184 INFO L124 PetriNetUnfolderBase]: 343/663 cut-off events. [2023-11-19 08:01:02,184 INFO L125 PetriNetUnfolderBase]: For 2848/2908 co-relation queries the response was YES. [2023-11-19 08:01:02,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3281 conditions, 663 events. 343/663 cut-off events. For 2848/2908 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3263 event pairs, 44 based on Foata normal form. 6/655 useless extension candidates. Maximal degree in co-relation 3262. Up to 343 conditions per place. [2023-11-19 08:01:02,194 INFO L140 encePairwiseOnDemand]: 222/229 looper letters, 69 selfloop transitions, 17 changer transitions 0/87 dead transitions. [2023-11-19 08:01:02,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 919 flow [2023-11-19 08:01:02,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:01:02,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:01:02,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 640 transitions. [2023-11-19 08:01:02,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39925140361821587 [2023-11-19 08:01:02,198 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 640 transitions. [2023-11-19 08:01:02,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 640 transitions. [2023-11-19 08:01:02,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:02,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 640 transitions. [2023-11-19 08:01:02,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.42857142857143) internal successors, (640), 7 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 08:01:02,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 08:01:02,206 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 08:01:02,206 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 596 flow. Second operand 7 states and 640 transitions. [2023-11-19 08:01:02,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 919 flow [2023-11-19 08:01:02,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 87 transitions, 879 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-19 08:01:02,226 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 616 flow [2023-11-19 08:01:02,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=616, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2023-11-19 08:01:02,228 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2023-11-19 08:01:02,228 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 616 flow [2023-11-19 08:01:02,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states 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 08:01:02,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:02,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:02,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:01:02,229 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:01:02,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:02,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1027113307, now seen corresponding path program 1 times [2023-11-19 08:01:02,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:02,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48008451] [2023-11-19 08:01:02,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:02,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:02,690 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 08:01:02,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:02,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48008451] [2023-11-19 08:01:02,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48008451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:02,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:02,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:01:02,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012787779] [2023-11-19 08:01:02,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:02,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:01:02,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:02,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:01:02,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:02,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 229 [2023-11-19 08:01:02,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 616 flow. Second operand has 5 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 0 states have call successors, (0), 0 states 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 08:01:02,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:02,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 229 [2023-11-19 08:01:02,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:03,120 INFO L124 PetriNetUnfolderBase]: 427/845 cut-off events. [2023-11-19 08:01:03,120 INFO L125 PetriNetUnfolderBase]: For 4613/4684 co-relation queries the response was YES. [2023-11-19 08:01:03,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4122 conditions, 845 events. 427/845 cut-off events. For 4613/4684 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4586 event pairs, 62 based on Foata normal form. 26/857 useless extension candidates. Maximal degree in co-relation 4101. Up to 416 conditions per place. [2023-11-19 08:01:03,129 INFO L140 encePairwiseOnDemand]: 219/229 looper letters, 73 selfloop transitions, 19 changer transitions 32/125 dead transitions. [2023-11-19 08:01:03,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 125 transitions, 1356 flow [2023-11-19 08:01:03,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:01:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:01:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 663 transitions. [2023-11-19 08:01:03,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135995009357455 [2023-11-19 08:01:03,133 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 663 transitions. [2023-11-19 08:01:03,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 663 transitions. [2023-11-19 08:01:03,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:03,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 663 transitions. [2023-11-19 08:01:03,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.71428571428571) internal successors, (663), 7 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 08:01:03,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 08:01:03,140 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 08:01:03,140 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 616 flow. Second operand 7 states and 663 transitions. [2023-11-19 08:01:03,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 125 transitions, 1356 flow [2023-11-19 08:01:03,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 125 transitions, 1308 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-19 08:01:03,160 INFO L231 Difference]: Finished difference. Result has 71 places, 72 transitions, 738 flow [2023-11-19 08:01:03,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=738, PETRI_PLACES=71, PETRI_TRANSITIONS=72} [2023-11-19 08:01:03,160 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2023-11-19 08:01:03,161 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 72 transitions, 738 flow [2023-11-19 08:01:03,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 0 states have call successors, (0), 0 states 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 08:01:03,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:03,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:03,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:01:03,162 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:01:03,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:03,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1238130465, now seen corresponding path program 2 times [2023-11-19 08:01:03,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:03,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232184772] [2023-11-19 08:01:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:03,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:03,941 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 08:01:03,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:03,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232184772] [2023-11-19 08:01:03,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232184772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:03,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:03,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:01:03,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461528202] [2023-11-19 08:01:03,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:03,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:01:03,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:03,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:01:03,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:01:04,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 229 [2023-11-19 08:01:04,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 72 transitions, 738 flow. Second operand has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 08:01:04,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:04,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 229 [2023-11-19 08:01:04,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:04,463 INFO L124 PetriNetUnfolderBase]: 290/618 cut-off events. [2023-11-19 08:01:04,464 INFO L125 PetriNetUnfolderBase]: For 3918/3973 co-relation queries the response was YES. [2023-11-19 08:01:04,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3460 conditions, 618 events. 290/618 cut-off events. For 3918/3973 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3328 event pairs, 55 based on Foata normal form. 15/618 useless extension candidates. Maximal degree in co-relation 3434. Up to 339 conditions per place. [2023-11-19 08:01:04,473 INFO L140 encePairwiseOnDemand]: 219/229 looper letters, 57 selfloop transitions, 43 changer transitions 1/102 dead transitions. [2023-11-19 08:01:04,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 102 transitions, 1198 flow [2023-11-19 08:01:04,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:01:04,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:01:04,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 633 transitions. [2023-11-19 08:01:04,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3948845913911416 [2023-11-19 08:01:04,477 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 633 transitions. [2023-11-19 08:01:04,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 633 transitions. [2023-11-19 08:01:04,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:04,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 633 transitions. [2023-11-19 08:01:04,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.42857142857143) internal successors, (633), 7 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 08:01:04,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 08:01:04,489 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 08:01:04,489 INFO L175 Difference]: Start difference. First operand has 71 places, 72 transitions, 738 flow. Second operand 7 states and 633 transitions. [2023-11-19 08:01:04,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 102 transitions, 1198 flow [2023-11-19 08:01:04,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 102 transitions, 1178 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-11-19 08:01:04,521 INFO L231 Difference]: Finished difference. Result has 77 places, 92 transitions, 1081 flow [2023-11-19 08:01:04,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1081, PETRI_PLACES=77, PETRI_TRANSITIONS=92} [2023-11-19 08:01:04,523 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2023-11-19 08:01:04,523 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 92 transitions, 1081 flow [2023-11-19 08:01:04,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 08:01:04,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:04,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:04,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:01:04,524 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:01:04,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:04,525 INFO L85 PathProgramCache]: Analyzing trace with hash -507918871, now seen corresponding path program 3 times [2023-11-19 08:01:04,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:04,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796907554] [2023-11-19 08:01:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:04,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:05,713 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 08:01:05,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:05,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796907554] [2023-11-19 08:01:05,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796907554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:05,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:05,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 08:01:05,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759276978] [2023-11-19 08:01:05,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:05,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:01:05,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:05,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:01:05,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:01:05,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 229 [2023-11-19 08:01:05,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 92 transitions, 1081 flow. Second operand has 10 states, 10 states have (on average 83.2) internal successors, (832), 10 states have internal predecessors, (832), 0 states have call successors, (0), 0 states 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 08:01:05,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:05,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 229 [2023-11-19 08:01:05,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:06,734 INFO L124 PetriNetUnfolderBase]: 309/678 cut-off events. [2023-11-19 08:01:06,734 INFO L125 PetriNetUnfolderBase]: For 5695/5748 co-relation queries the response was YES. [2023-11-19 08:01:06,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4150 conditions, 678 events. 309/678 cut-off events. For 5695/5748 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3862 event pairs, 58 based on Foata normal form. 25/688 useless extension candidates. Maximal degree in co-relation 4121. Up to 381 conditions per place. [2023-11-19 08:01:06,744 INFO L140 encePairwiseOnDemand]: 218/229 looper letters, 62 selfloop transitions, 44 changer transitions 29/136 dead transitions. [2023-11-19 08:01:06,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 136 transitions, 1740 flow [2023-11-19 08:01:06,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:01:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-19 08:01:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1143 transitions. [2023-11-19 08:01:06,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3839435673496809 [2023-11-19 08:01:06,752 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1143 transitions. [2023-11-19 08:01:06,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1143 transitions. [2023-11-19 08:01:06,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:06,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1143 transitions. [2023-11-19 08:01:06,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.92307692307692) internal successors, (1143), 13 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states 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 08:01:06,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 229.0) internal successors, (3206), 14 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states 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 08:01:06,765 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 229.0) internal successors, (3206), 14 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states 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 08:01:06,765 INFO L175 Difference]: Start difference. First operand has 77 places, 92 transitions, 1081 flow. Second operand 13 states and 1143 transitions. [2023-11-19 08:01:06,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 136 transitions, 1740 flow [2023-11-19 08:01:06,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 136 transitions, 1596 flow, removed 58 selfloop flow, removed 2 redundant places. [2023-11-19 08:01:06,795 INFO L231 Difference]: Finished difference. Result has 90 places, 91 transitions, 1126 flow [2023-11-19 08:01:06,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1126, PETRI_PLACES=90, PETRI_TRANSITIONS=91} [2023-11-19 08:01:06,796 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2023-11-19 08:01:06,797 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 91 transitions, 1126 flow [2023-11-19 08:01:06,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 83.2) internal successors, (832), 10 states have internal predecessors, (832), 0 states have call successors, (0), 0 states 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 08:01:06,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:06,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:06,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 08:01:06,798 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:01:06,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:06,799 INFO L85 PathProgramCache]: Analyzing trace with hash -726005155, now seen corresponding path program 4 times [2023-11-19 08:01:06,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:06,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731607644] [2023-11-19 08:01:06,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:06,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:07,299 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 08:01:07,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:07,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731607644] [2023-11-19 08:01:07,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731607644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:07,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:07,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:01:07,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663392938] [2023-11-19 08:01:07,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:07,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:01:07,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:07,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:01:07,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:01:07,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 229 [2023-11-19 08:01:07,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 91 transitions, 1126 flow. Second operand has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states 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 08:01:07,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:07,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 229 [2023-11-19 08:01:07,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:07,754 INFO L124 PetriNetUnfolderBase]: 281/581 cut-off events. [2023-11-19 08:01:07,755 INFO L125 PetriNetUnfolderBase]: For 5792/5835 co-relation queries the response was YES. [2023-11-19 08:01:07,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3779 conditions, 581 events. 281/581 cut-off events. For 5792/5835 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2982 event pairs, 55 based on Foata normal form. 16/581 useless extension candidates. Maximal degree in co-relation 3746. Up to 346 conditions per place. [2023-11-19 08:01:07,764 INFO L140 encePairwiseOnDemand]: 220/229 looper letters, 60 selfloop transitions, 48 changer transitions 11/120 dead transitions. [2023-11-19 08:01:07,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 120 transitions, 1663 flow [2023-11-19 08:01:07,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:01:07,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:01:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 749 transitions. [2023-11-19 08:01:07,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088427947598253 [2023-11-19 08:01:07,768 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 749 transitions. [2023-11-19 08:01:07,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 749 transitions. [2023-11-19 08:01:07,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:07,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 749 transitions. [2023-11-19 08:01:07,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.625) internal successors, (749), 8 states have internal predecessors, (749), 0 states have call successors, (0), 0 states 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 08:01:07,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states 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 08:01:07,777 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states 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 08:01:07,777 INFO L175 Difference]: Start difference. First operand has 90 places, 91 transitions, 1126 flow. Second operand 8 states and 749 transitions. [2023-11-19 08:01:07,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 120 transitions, 1663 flow [2023-11-19 08:01:07,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 120 transitions, 1577 flow, removed 15 selfloop flow, removed 7 redundant places. [2023-11-19 08:01:07,810 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 1274 flow [2023-11-19 08:01:07,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1059, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1274, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2023-11-19 08:01:07,812 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2023-11-19 08:01:07,812 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 1274 flow [2023-11-19 08:01:07,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states 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 08:01:07,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:07,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:07,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 08:01:07,813 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:01:07,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:07,814 INFO L85 PathProgramCache]: Analyzing trace with hash 608304269, now seen corresponding path program 5 times [2023-11-19 08:01:07,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:07,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41549658] [2023-11-19 08:01:07,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:07,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:08,663 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 08:01:08,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:08,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41549658] [2023-11-19 08:01:08,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41549658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:08,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:08,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 08:01:08,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034575317] [2023-11-19 08:01:08,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:08,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:01:08,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:08,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:01:08,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:01:08,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 229 [2023-11-19 08:01:08,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 1274 flow. Second operand has 10 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 08:01:08,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:08,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 229 [2023-11-19 08:01:08,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:09,357 INFO L124 PetriNetUnfolderBase]: 313/657 cut-off events. [2023-11-19 08:01:09,358 INFO L125 PetriNetUnfolderBase]: For 8389/8419 co-relation queries the response was YES. [2023-11-19 08:01:09,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4490 conditions, 657 events. 313/657 cut-off events. For 8389/8419 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3562 event pairs, 61 based on Foata normal form. 15/654 useless extension candidates. Maximal degree in co-relation 4457. Up to 413 conditions per place. [2023-11-19 08:01:09,368 INFO L140 encePairwiseOnDemand]: 220/229 looper letters, 95 selfloop transitions, 46 changer transitions 13/155 dead transitions. [2023-11-19 08:01:09,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 155 transitions, 2218 flow [2023-11-19 08:01:09,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:01:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 08:01:09,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 997 transitions. [2023-11-19 08:01:09,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3957919809448194 [2023-11-19 08:01:09,374 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 997 transitions. [2023-11-19 08:01:09,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 997 transitions. [2023-11-19 08:01:09,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:09,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 997 transitions. [2023-11-19 08:01:09,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 90.63636363636364) internal successors, (997), 11 states have internal predecessors, (997), 0 states have call successors, (0), 0 states 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 08:01:09,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states 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 08:01:09,387 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states 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 08:01:09,387 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 1274 flow. Second operand 11 states and 997 transitions. [2023-11-19 08:01:09,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 155 transitions, 2218 flow [2023-11-19 08:01:09,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 155 transitions, 2135 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-11-19 08:01:09,421 INFO L231 Difference]: Finished difference. Result has 103 places, 111 transitions, 1655 flow [2023-11-19 08:01:09,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1655, PETRI_PLACES=103, PETRI_TRANSITIONS=111} [2023-11-19 08:01:09,422 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2023-11-19 08:01:09,422 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 111 transitions, 1655 flow [2023-11-19 08:01:09,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 08:01:09,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:09,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:09,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 08:01:09,424 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:01:09,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:09,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1747912697, now seen corresponding path program 6 times [2023-11-19 08:01:09,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:09,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649100146] [2023-11-19 08:01:09,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:09,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:09,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:09,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:09,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649100146] [2023-11-19 08:01:09,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649100146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:09,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:09,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:01:09,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075747885] [2023-11-19 08:01:09,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:09,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:01:09,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:09,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:01:09,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:01:10,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 229 [2023-11-19 08:01:10,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 111 transitions, 1655 flow. Second operand has 8 states, 8 states have (on average 84.5) internal successors, (676), 8 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 08:01:10,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:10,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 229 [2023-11-19 08:01:10,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:10,563 INFO L124 PetriNetUnfolderBase]: 292/619 cut-off events. [2023-11-19 08:01:10,564 INFO L125 PetriNetUnfolderBase]: For 9213/9237 co-relation queries the response was YES. [2023-11-19 08:01:10,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4374 conditions, 619 events. 292/619 cut-off events. For 9213/9237 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3321 event pairs, 73 based on Foata normal form. 13/617 useless extension candidates. Maximal degree in co-relation 4336. Up to 401 conditions per place. [2023-11-19 08:01:10,574 INFO L140 encePairwiseOnDemand]: 222/229 looper letters, 80 selfloop transitions, 11 changer transitions 45/137 dead transitions. [2023-11-19 08:01:10,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 137 transitions, 2149 flow [2023-11-19 08:01:10,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:01:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:01:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 541 transitions. [2023-11-19 08:01:10,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3937409024745269 [2023-11-19 08:01:10,580 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 541 transitions. [2023-11-19 08:01:10,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 541 transitions. [2023-11-19 08:01:10,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:10,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 541 transitions. [2023-11-19 08:01:10,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 0 states have call successors, (0), 0 states 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 08:01:10,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states 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 08:01:10,590 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states 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 08:01:10,590 INFO L175 Difference]: Start difference. First operand has 103 places, 111 transitions, 1655 flow. Second operand 6 states and 541 transitions. [2023-11-19 08:01:10,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 137 transitions, 2149 flow [2023-11-19 08:01:10,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 137 transitions, 2083 flow, removed 28 selfloop flow, removed 2 redundant places. [2023-11-19 08:01:10,646 INFO L231 Difference]: Finished difference. Result has 107 places, 86 transitions, 1189 flow [2023-11-19 08:01:10,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1189, PETRI_PLACES=107, PETRI_TRANSITIONS=86} [2023-11-19 08:01:10,647 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2023-11-19 08:01:10,647 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 86 transitions, 1189 flow [2023-11-19 08:01:10,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 84.5) internal successors, (676), 8 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 08:01:10,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:10,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:10,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 08:01:10,649 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:01:10,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:10,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1593238569, now seen corresponding path program 7 times [2023-11-19 08:01:10,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:10,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550040701] [2023-11-19 08:01:10,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:10,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:11,364 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 08:01:11,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:11,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550040701] [2023-11-19 08:01:11,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550040701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:11,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:11,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:01:11,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227337096] [2023-11-19 08:01:11,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:11,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:01:11,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:11,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:01:11,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:01:11,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 229 [2023-11-19 08:01:11,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 86 transitions, 1189 flow. Second operand has 8 states, 8 states have (on average 84.5) internal successors, (676), 8 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 08:01:11,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:11,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 229 [2023-11-19 08:01:11,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:11,892 INFO L124 PetriNetUnfolderBase]: 221/477 cut-off events. [2023-11-19 08:01:11,893 INFO L125 PetriNetUnfolderBase]: For 6400/6417 co-relation queries the response was YES. [2023-11-19 08:01:11,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3296 conditions, 477 events. 221/477 cut-off events. For 6400/6417 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2382 event pairs, 48 based on Foata normal form. 9/474 useless extension candidates. Maximal degree in co-relation 3256. Up to 293 conditions per place. [2023-11-19 08:01:11,901 INFO L140 encePairwiseOnDemand]: 221/229 looper letters, 60 selfloop transitions, 43 changer transitions 5/109 dead transitions. [2023-11-19 08:01:11,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 109 transitions, 1621 flow [2023-11-19 08:01:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:01:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:01:11,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 715 transitions. [2023-11-19 08:01:11,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902838427947598 [2023-11-19 08:01:11,905 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 715 transitions. [2023-11-19 08:01:11,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 715 transitions. [2023-11-19 08:01:11,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:11,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 715 transitions. [2023-11-19 08:01:11,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 89.375) internal successors, (715), 8 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:11,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states 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 08:01:11,913 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states 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 08:01:11,913 INFO L175 Difference]: Start difference. First operand has 107 places, 86 transitions, 1189 flow. Second operand 8 states and 715 transitions. [2023-11-19 08:01:11,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 109 transitions, 1621 flow [2023-11-19 08:01:11,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 1541 flow, removed 22 selfloop flow, removed 10 redundant places. [2023-11-19 08:01:11,952 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 1298 flow [2023-11-19 08:01:11,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1298, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2023-11-19 08:01:11,953 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2023-11-19 08:01:11,953 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 1298 flow [2023-11-19 08:01:11,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 84.5) internal successors, (676), 8 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 08:01:11,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:11,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:11,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 08:01:11,954 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:01:11,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:11,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1600440489, now seen corresponding path program 8 times [2023-11-19 08:01:11,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:11,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571895721] [2023-11-19 08:01:11,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:11,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:12,577 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 08:01:12,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:12,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571895721] [2023-11-19 08:01:12,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571895721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:12,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:12,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:01:12,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22557610] [2023-11-19 08:01:12,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:12,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:01:12,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:12,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:01:12,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:01:12,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 229 [2023-11-19 08:01:12,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 1298 flow. Second operand has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states 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 08:01:12,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:12,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 229 [2023-11-19 08:01:12,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:13,021 INFO L124 PetriNetUnfolderBase]: 233/505 cut-off events. [2023-11-19 08:01:13,022 INFO L125 PetriNetUnfolderBase]: For 6772/6788 co-relation queries the response was YES. [2023-11-19 08:01:13,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3497 conditions, 505 events. 233/505 cut-off events. For 6772/6788 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2587 event pairs, 58 based on Foata normal form. 11/504 useless extension candidates. Maximal degree in co-relation 3461. Up to 305 conditions per place. [2023-11-19 08:01:13,035 INFO L140 encePairwiseOnDemand]: 220/229 looper letters, 67 selfloop transitions, 20 changer transitions 29/117 dead transitions. [2023-11-19 08:01:13,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 117 transitions, 1823 flow [2023-11-19 08:01:13,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:01:13,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:01:13,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 737 transitions. [2023-11-19 08:01:13,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40229257641921395 [2023-11-19 08:01:13,038 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 737 transitions. [2023-11-19 08:01:13,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 737 transitions. [2023-11-19 08:01:13,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:13,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 737 transitions. [2023-11-19 08:01:13,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.125) internal successors, (737), 8 states have internal predecessors, (737), 0 states have call successors, (0), 0 states 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 08:01:13,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states 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 08:01:13,045 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states 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 08:01:13,045 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 1298 flow. Second operand 8 states and 737 transitions. [2023-11-19 08:01:13,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 117 transitions, 1823 flow [2023-11-19 08:01:13,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 117 transitions, 1755 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-19 08:01:13,079 INFO L231 Difference]: Finished difference. Result has 104 places, 83 transitions, 1213 flow [2023-11-19 08:01:13,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1213, PETRI_PLACES=104, PETRI_TRANSITIONS=83} [2023-11-19 08:01:13,080 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2023-11-19 08:01:13,080 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 83 transitions, 1213 flow [2023-11-19 08:01:13,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states 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 08:01:13,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:13,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:13,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 08:01:13,097 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:01:13,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:13,097 INFO L85 PathProgramCache]: Analyzing trace with hash -365218865, now seen corresponding path program 1 times [2023-11-19 08:01:13,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:13,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812360320] [2023-11-19 08:01:13,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:13,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:13,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:13,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:13,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812360320] [2023-11-19 08:01:13,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812360320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:13,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:13,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:01:13,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673725233] [2023-11-19 08:01:13,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:13,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:01:13,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:13,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:01:13,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:01:13,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 229 [2023-11-19 08:01:13,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 83 transitions, 1213 flow. Second operand has 8 states, 8 states have (on average 86.625) internal successors, (693), 8 states have internal predecessors, (693), 0 states have call successors, (0), 0 states 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 08:01:13,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:13,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 229 [2023-11-19 08:01:13,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:14,177 INFO L124 PetriNetUnfolderBase]: 196/458 cut-off events. [2023-11-19 08:01:14,177 INFO L125 PetriNetUnfolderBase]: For 6932/6947 co-relation queries the response was YES. [2023-11-19 08:01:14,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3136 conditions, 458 events. 196/458 cut-off events. For 6932/6947 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2394 event pairs, 50 based on Foata normal form. 20/466 useless extension candidates. Maximal degree in co-relation 3099. Up to 175 conditions per place. [2023-11-19 08:01:14,183 INFO L140 encePairwiseOnDemand]: 221/229 looper letters, 43 selfloop transitions, 21 changer transitions 44/109 dead transitions. [2023-11-19 08:01:14,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 109 transitions, 1684 flow [2023-11-19 08:01:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:01:14,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:01:14,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 643 transitions. [2023-11-19 08:01:14,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40112289457267625 [2023-11-19 08:01:14,186 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 643 transitions. [2023-11-19 08:01:14,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 643 transitions. [2023-11-19 08:01:14,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:14,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 643 transitions. [2023-11-19 08:01:14,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.85714285714286) internal successors, (643), 7 states have internal predecessors, (643), 0 states have call successors, (0), 0 states 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 08:01:14,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 08:01:14,191 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 08:01:14,191 INFO L175 Difference]: Start difference. First operand has 104 places, 83 transitions, 1213 flow. Second operand 7 states and 643 transitions. [2023-11-19 08:01:14,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 109 transitions, 1684 flow [2023-11-19 08:01:14,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 1592 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-11-19 08:01:14,225 INFO L231 Difference]: Finished difference. Result has 105 places, 61 transitions, 908 flow [2023-11-19 08:01:14,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=908, PETRI_PLACES=105, PETRI_TRANSITIONS=61} [2023-11-19 08:01:14,227 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2023-11-19 08:01:14,227 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 61 transitions, 908 flow [2023-11-19 08:01:14,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.625) internal successors, (693), 8 states have internal predecessors, (693), 0 states have call successors, (0), 0 states 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 08:01:14,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:14,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:14,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 08:01:14,228 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:01:14,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:14,229 INFO L85 PathProgramCache]: Analyzing trace with hash -272962865, now seen corresponding path program 2 times [2023-11-19 08:01:14,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:14,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883627539] [2023-11-19 08:01:14,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:14,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:15,571 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 08:01:15,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:15,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883627539] [2023-11-19 08:01:15,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883627539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:15,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:15,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 08:01:15,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206085620] [2023-11-19 08:01:15,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:15,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:01:15,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:15,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:01:15,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:01:15,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 229 [2023-11-19 08:01:15,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 61 transitions, 908 flow. Second operand has 10 states, 10 states have (on average 87.3) internal successors, (873), 10 states have internal predecessors, (873), 0 states have call successors, (0), 0 states 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 08:01:15,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:15,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 229 [2023-11-19 08:01:15,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:16,065 INFO L124 PetriNetUnfolderBase]: 95/240 cut-off events. [2023-11-19 08:01:16,065 INFO L125 PetriNetUnfolderBase]: For 4176/4186 co-relation queries the response was YES. [2023-11-19 08:01:16,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1770 conditions, 240 events. 95/240 cut-off events. For 4176/4186 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1045 event pairs, 21 based on Foata normal form. 12/240 useless extension candidates. Maximal degree in co-relation 1732. Up to 126 conditions per place. [2023-11-19 08:01:16,069 INFO L140 encePairwiseOnDemand]: 223/229 looper letters, 46 selfloop transitions, 14 changer transitions 14/75 dead transitions. [2023-11-19 08:01:16,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 75 transitions, 1127 flow [2023-11-19 08:01:16,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:01:16,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:01:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 644 transitions. [2023-11-19 08:01:16,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017467248908297 [2023-11-19 08:01:16,072 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 644 transitions. [2023-11-19 08:01:16,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 644 transitions. [2023-11-19 08:01:16,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:16,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 644 transitions. [2023-11-19 08:01:16,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 0 states have call successors, (0), 0 states 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 08:01:16,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 08:01:16,078 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 08:01:16,078 INFO L175 Difference]: Start difference. First operand has 105 places, 61 transitions, 908 flow. Second operand 7 states and 644 transitions. [2023-11-19 08:01:16,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 75 transitions, 1127 flow [2023-11-19 08:01:16,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 75 transitions, 1022 flow, removed 15 selfloop flow, removed 12 redundant places. [2023-11-19 08:01:16,102 INFO L231 Difference]: Finished difference. Result has 95 places, 54 transitions, 762 flow [2023-11-19 08:01:16,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=762, PETRI_PLACES=95, PETRI_TRANSITIONS=54} [2023-11-19 08:01:16,103 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2023-11-19 08:01:16,103 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 54 transitions, 762 flow [2023-11-19 08:01:16,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.3) internal successors, (873), 10 states have internal predecessors, (873), 0 states have call successors, (0), 0 states 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 08:01:16,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:16,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:16,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 08:01:16,104 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:01:16,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:16,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1892878055, now seen corresponding path program 3 times [2023-11-19 08:01:16,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:16,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681064085] [2023-11-19 08:01:16,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:16,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:16,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:16,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681064085] [2023-11-19 08:01:16,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681064085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:16,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:16,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:01:16,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140662120] [2023-11-19 08:01:16,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:16,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:01:16,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:16,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:01:16,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:01:16,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 229 [2023-11-19 08:01:16,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 54 transitions, 762 flow. Second operand has 6 states, 6 states have (on average 88.16666666666667) internal successors, (529), 6 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 08:01:16,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:16,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 229 [2023-11-19 08:01:16,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:16,848 INFO L124 PetriNetUnfolderBase]: 101/232 cut-off events. [2023-11-19 08:01:16,848 INFO L125 PetriNetUnfolderBase]: For 2502/2512 co-relation queries the response was YES. [2023-11-19 08:01:16,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1598 conditions, 232 events. 101/232 cut-off events. For 2502/2512 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 922 event pairs, 29 based on Foata normal form. 8/230 useless extension candidates. Maximal degree in co-relation 1565. Up to 142 conditions per place. [2023-11-19 08:01:16,855 INFO L140 encePairwiseOnDemand]: 220/229 looper letters, 37 selfloop transitions, 19 changer transitions 14/71 dead transitions. [2023-11-19 08:01:16,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 71 transitions, 1016 flow [2023-11-19 08:01:16,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:01:16,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:01:16,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 645 transitions. [2023-11-19 08:01:16,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4023705552089832 [2023-11-19 08:01:16,858 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 645 transitions. [2023-11-19 08:01:16,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 645 transitions. [2023-11-19 08:01:16,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:16,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 645 transitions. [2023-11-19 08:01:16,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.14285714285714) internal successors, (645), 7 states have internal predecessors, (645), 0 states have call successors, (0), 0 states 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 08:01:16,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 08:01:16,864 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states 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 08:01:16,864 INFO L175 Difference]: Start difference. First operand has 95 places, 54 transitions, 762 flow. Second operand 7 states and 645 transitions. [2023-11-19 08:01:16,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 71 transitions, 1016 flow [2023-11-19 08:01:16,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 71 transitions, 966 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-11-19 08:01:16,879 INFO L231 Difference]: Finished difference. Result has 90 places, 53 transitions, 774 flow [2023-11-19 08:01:16,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=774, PETRI_PLACES=90, PETRI_TRANSITIONS=53} [2023-11-19 08:01:16,880 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2023-11-19 08:01:16,881 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 53 transitions, 774 flow [2023-11-19 08:01:16,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.16666666666667) internal successors, (529), 6 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 08:01:16,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:16,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:16,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 08:01:16,882 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:01:16,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:16,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1542390217, now seen corresponding path program 4 times [2023-11-19 08:01:16,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:16,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870748526] [2023-11-19 08:01:16,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:16,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:17,663 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 08:01:17,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:17,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870748526] [2023-11-19 08:01:17,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870748526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:17,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:17,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:01:17,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660278957] [2023-11-19 08:01:17,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:17,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:01:17,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:17,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:01:17,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:01:17,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 229 [2023-11-19 08:01:17,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 53 transitions, 774 flow. Second operand has 9 states, 9 states have (on average 84.44444444444444) internal successors, (760), 9 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 08:01:17,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:17,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 229 [2023-11-19 08:01:17,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:18,086 INFO L124 PetriNetUnfolderBase]: 79/198 cut-off events. [2023-11-19 08:01:18,086 INFO L125 PetriNetUnfolderBase]: For 2370/2378 co-relation queries the response was YES. [2023-11-19 08:01:18,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 198 events. 79/198 cut-off events. For 2370/2378 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 800 event pairs, 14 based on Foata normal form. 6/194 useless extension candidates. Maximal degree in co-relation 1431. Up to 82 conditions per place. [2023-11-19 08:01:18,089 INFO L140 encePairwiseOnDemand]: 219/229 looper letters, 37 selfloop transitions, 20 changer transitions 20/78 dead transitions. [2023-11-19 08:01:18,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 78 transitions, 1188 flow [2023-11-19 08:01:18,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:01:18,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 08:01:18,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1049 transitions. [2023-11-19 08:01:18,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817321688500728 [2023-11-19 08:01:18,094 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1049 transitions. [2023-11-19 08:01:18,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1049 transitions. [2023-11-19 08:01:18,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:18,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1049 transitions. [2023-11-19 08:01:18,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 87.41666666666667) internal successors, (1049), 12 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states 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 08:01:18,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states 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 08:01:18,102 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states 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 08:01:18,102 INFO L175 Difference]: Start difference. First operand has 90 places, 53 transitions, 774 flow. Second operand 12 states and 1049 transitions. [2023-11-19 08:01:18,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 78 transitions, 1188 flow [2023-11-19 08:01:18,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 78 transitions, 1124 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-11-19 08:01:18,118 INFO L231 Difference]: Finished difference. Result has 100 places, 48 transitions, 712 flow [2023-11-19 08:01:18,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=712, PETRI_PLACES=100, PETRI_TRANSITIONS=48} [2023-11-19 08:01:18,119 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2023-11-19 08:01:18,119 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 48 transitions, 712 flow [2023-11-19 08:01:18,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 84.44444444444444) internal successors, (760), 9 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 08:01:18,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:18,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:18,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-19 08:01:18,120 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:01:18,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:18,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2256881, now seen corresponding path program 5 times [2023-11-19 08:01:18,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:18,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700114367] [2023-11-19 08:01:18,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:18,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:18,915 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 08:01:18,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:18,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700114367] [2023-11-19 08:01:18,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700114367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:18,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:18,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:01:18,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463891209] [2023-11-19 08:01:18,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:18,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:01:18,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:18,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:01:18,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:01:18,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 229 [2023-11-19 08:01:18,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 48 transitions, 712 flow. Second operand has 6 states, 6 states have (on average 88.16666666666667) internal successors, (529), 6 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 08:01:18,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:18,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 229 [2023-11-19 08:01:18,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:19,170 INFO L124 PetriNetUnfolderBase]: 61/146 cut-off events. [2023-11-19 08:01:19,170 INFO L125 PetriNetUnfolderBase]: For 2069/2075 co-relation queries the response was YES. [2023-11-19 08:01:19,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 146 events. 61/146 cut-off events. For 2069/2075 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 485 event pairs, 12 based on Foata normal form. 2/143 useless extension candidates. Maximal degree in co-relation 1119. Up to 102 conditions per place. [2023-11-19 08:01:19,173 INFO L140 encePairwiseOnDemand]: 222/229 looper letters, 39 selfloop transitions, 15 changer transitions 0/55 dead transitions. [2023-11-19 08:01:19,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 55 transitions, 867 flow [2023-11-19 08:01:19,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:01:19,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:01:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 546 transitions. [2023-11-19 08:01:19,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39737991266375544 [2023-11-19 08:01:19,179 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 546 transitions. [2023-11-19 08:01:19,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 546 transitions. [2023-11-19 08:01:19,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:19,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 546 transitions. [2023-11-19 08:01:19,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 08:01:19,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states 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 08:01:19,184 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states 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 08:01:19,184 INFO L175 Difference]: Start difference. First operand has 100 places, 48 transitions, 712 flow. Second operand 6 states and 546 transitions. [2023-11-19 08:01:19,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 55 transitions, 867 flow [2023-11-19 08:01:19,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 55 transitions, 690 flow, removed 31 selfloop flow, removed 17 redundant places. [2023-11-19 08:01:19,198 INFO L231 Difference]: Finished difference. Result has 84 places, 49 transitions, 597 flow [2023-11-19 08:01:19,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=597, PETRI_PLACES=84, PETRI_TRANSITIONS=49} [2023-11-19 08:01:19,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2023-11-19 08:01:19,199 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 49 transitions, 597 flow [2023-11-19 08:01:19,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.16666666666667) internal successors, (529), 6 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 08:01:19,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:19,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:19,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-19 08:01:19,200 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-19 08:01:19,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:19,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2017487493, now seen corresponding path program 6 times [2023-11-19 08:01:19,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:19,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482881696] [2023-11-19 08:01:19,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:19,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat