./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe013_tso.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_076299b5-daf1-4f85-86c0-fc8d36b8b773/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_076299b5-daf1-4f85-86c0-fc8d36b8b773/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_076299b5-daf1-4f85-86c0-fc8d36b8b773/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_076299b5-daf1-4f85-86c0-fc8d36b8b773/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe013_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_076299b5-daf1-4f85-86c0-fc8d36b8b773/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_076299b5-daf1-4f85-86c0-fc8d36b8b773/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 0cdeed82108b12e5d5525e3abe542fd48b9a422ac7475147d5db7c8538ce4dc0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:08,367 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:08,487 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_076299b5-daf1-4f85-86c0-fc8d36b8b773/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 08:05:08,492 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:08,499 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:08,536 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:08,538 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:08,538 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:08,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:08,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:08,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:08,546 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:08,547 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:08,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:08,549 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:05:08,550 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:08,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:05:08,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:08,551 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:05:08,552 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:05:08,553 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:05:08,553 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:08,554 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:05:08,554 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:05:08,555 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:05:08,556 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:08,557 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:08,557 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:08,558 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:08,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:08,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:08,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:08,561 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:08,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:08,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:08,562 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:08,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:08,562 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:08,563 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_076299b5-daf1-4f85-86c0-fc8d36b8b773/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_076299b5-daf1-4f85-86c0-fc8d36b8b773/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cdeed82108b12e5d5525e3abe542fd48b9a422ac7475147d5db7c8538ce4dc0 [2023-11-19 08:05:08,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:08,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:08,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:08,935 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:08,936 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:08,937 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_076299b5-daf1-4f85-86c0-fc8d36b8b773/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe013_tso.i [2023-11-19 08:05:12,082 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:12,364 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:12,365 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_076299b5-daf1-4f85-86c0-fc8d36b8b773/sv-benchmarks/c/pthread-wmm/safe013_tso.i [2023-11-19 08:05:12,394 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_076299b5-daf1-4f85-86c0-fc8d36b8b773/bin/uautomizer-verify-uCwYo4JHxu/data/acd59d577/d1a8105bbb124b2db2fa44a5e3c4760f/FLAG6d15a097f [2023-11-19 08:05:12,415 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_076299b5-daf1-4f85-86c0-fc8d36b8b773/bin/uautomizer-verify-uCwYo4JHxu/data/acd59d577/d1a8105bbb124b2db2fa44a5e3c4760f [2023-11-19 08:05:12,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:12,423 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:12,424 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:12,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:12,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:12,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:12" (1/1) ... [2023-11-19 08:05:12,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d635269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:12, skipping insertion in model container [2023-11-19 08:05:12,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:12" (1/1) ... [2023-11-19 08:05:12,484 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:12,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:12,928 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:12,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:13,010 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:05:13,011 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:05:13,019 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:13,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:13 WrapperNode [2023-11-19 08:05:13,020 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:13,021 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:13,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:13,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:13,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:13" (1/1) ... [2023-11-19 08:05:13,065 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:13" (1/1) ... [2023-11-19 08:05:13,096 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-11-19 08:05:13,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:13,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:13,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:13,099 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:13,109 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:13" (1/1) ... [2023-11-19 08:05:13,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:13" (1/1) ... [2023-11-19 08:05:13,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:13" (1/1) ... [2023-11-19 08:05:13,126 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:13" (1/1) ... [2023-11-19 08:05:13,132 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:13" (1/1) ... [2023-11-19 08:05:13,147 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:13" (1/1) ... [2023-11-19 08:05:13,149 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:13" (1/1) ... [2023-11-19 08:05:13,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:13" (1/1) ... [2023-11-19 08:05:13,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:13,160 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:13,160 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:13,161 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:13,161 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:13" (1/1) ... [2023-11-19 08:05:13,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:13,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_076299b5-daf1-4f85-86c0-fc8d36b8b773/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:13,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_076299b5-daf1-4f85-86c0-fc8d36b8b773/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:13,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_076299b5-daf1-4f85-86c0-fc8d36b8b773/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:05:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:05:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:05:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:05:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:05:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 08:05:13,295 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 08:05:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 08:05:13,295 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 08:05:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 08:05:13,296 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 08:05:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:05:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:05:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:13,300 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 08:05:13,454 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:13,457 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:05:13,731 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:05:13,741 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:05:13,743 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:05:13,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:13 BoogieIcfgContainer [2023-11-19 08:05:13,748 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:05:13,750 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:05:13,750 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:05:13,753 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:05:13,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:12" (1/3) ... [2023-11-19 08:05:13,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd083d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:13, skipping insertion in model container [2023-11-19 08:05:13,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:13" (2/3) ... [2023-11-19 08:05:13,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd083d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:13, skipping insertion in model container [2023-11-19 08:05:13,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:13" (3/3) ... [2023-11-19 08:05:13,757 INFO L112 eAbstractionObserver]: Analyzing ICFG safe013_tso.i [2023-11-19 08:05:13,777 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:05:13,777 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 08:05:13,778 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:05:13,857 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:05:13,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 108 transitions, 228 flow [2023-11-19 08:05:13,944 INFO L124 PetriNetUnfolderBase]: 3/105 cut-off events. [2023-11-19 08:05:13,945 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:13,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 105 events. 3/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-11-19 08:05:13,950 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 108 transitions, 228 flow [2023-11-19 08:05:13,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 100 transitions, 209 flow [2023-11-19 08:05:13,959 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:05:13,969 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 100 transitions, 209 flow [2023-11-19 08:05:13,972 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 100 transitions, 209 flow [2023-11-19 08:05:13,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 100 transitions, 209 flow [2023-11-19 08:05:13,998 INFO L124 PetriNetUnfolderBase]: 3/100 cut-off events. [2023-11-19 08:05:13,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:13,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 100 events. 3/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-11-19 08:05:14,002 INFO L119 LiptonReduction]: Number of co-enabled transitions 2320 [2023-11-19 08:05:17,103 INFO L134 LiptonReduction]: Checked pairs total: 3163 [2023-11-19 08:05:17,103 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-11-19 08:05:17,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:17,144 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;@4c25b7ce, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:17,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-19 08:05:17,147 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:05:17,147 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 08:05:17,147 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:17,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:17,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 08:05:17,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:05:17,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:17,154 INFO L85 PathProgramCache]: Analyzing trace with hash 384, now seen corresponding path program 1 times [2023-11-19 08:05:17,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:17,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493080360] [2023-11-19 08:05:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:17,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:17,315 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 08:05:17,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:17,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493080360] [2023-11-19 08:05:17,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493080360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:17,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:17,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 08:05:17,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221439277] [2023-11-19 08:05:17,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:17,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:05:17,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:17,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:05:17,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:05:17,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 210 [2023-11-19 08:05:17,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 08:05:17,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:17,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 210 [2023-11-19 08:05:17,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:17,618 INFO L124 PetriNetUnfolderBase]: 513/792 cut-off events. [2023-11-19 08:05:17,618 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-19 08:05:17,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1617 conditions, 792 events. 513/792 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3252 event pairs, 513 based on Foata normal form. 0/739 useless extension candidates. Maximal degree in co-relation 1606. Up to 787 conditions per place. [2023-11-19 08:05:17,638 INFO L140 encePairwiseOnDemand]: 203/210 looper letters, 18 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-11-19 08:05:17,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 83 flow [2023-11-19 08:05:17,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:05:17,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:05:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 227 transitions. [2023-11-19 08:05:17,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404761904761904 [2023-11-19 08:05:17,656 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 227 transitions. [2023-11-19 08:05:17,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 227 transitions. [2023-11-19 08:05:17,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:17,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 227 transitions. [2023-11-19 08:05:17,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states 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 08:05:17,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 08:05:17,672 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 08:05:17,674 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 2 states and 227 transitions. [2023-11-19 08:05:17,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 83 flow [2023-11-19 08:05:17,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:05:17,680 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 44 flow [2023-11-19 08:05:17,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-11-19 08:05:17,686 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-11-19 08:05:17,686 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 44 flow [2023-11-19 08:05:17,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 08:05:17,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:17,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:17,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:05:17,688 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:05:17,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:17,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1247099779, now seen corresponding path program 1 times [2023-11-19 08:05:17,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:17,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332271563] [2023-11-19 08:05:17,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:17,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:18,505 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 08:05:18,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:18,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332271563] [2023-11-19 08:05:18,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332271563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:18,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:18,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:18,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119123097] [2023-11-19 08:05:18,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:18,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:18,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:18,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:18,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:18,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 210 [2023-11-19 08:05:18,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 44 flow. Second operand has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 08:05:18,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:18,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 210 [2023-11-19 08:05:18,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:18,951 INFO L124 PetriNetUnfolderBase]: 409/638 cut-off events. [2023-11-19 08:05:18,951 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:18,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 638 events. 409/638 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2607 event pairs, 0 based on Foata normal form. 0/638 useless extension candidates. Maximal degree in co-relation 1306. Up to 456 conditions per place. [2023-11-19 08:05:18,958 INFO L140 encePairwiseOnDemand]: 205/210 looper letters, 29 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2023-11-19 08:05:18,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 140 flow [2023-11-19 08:05:18,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:05:18,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:05:18,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 545 transitions. [2023-11-19 08:05:18,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43253968253968256 [2023-11-19 08:05:18,963 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 545 transitions. [2023-11-19 08:05:18,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 545 transitions. [2023-11-19 08:05:18,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:18,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 545 transitions. [2023-11-19 08:05:18,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states 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 08:05:18,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 210.0) internal successors, (1470), 7 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 08:05:18,974 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 210.0) internal successors, (1470), 7 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 08:05:18,974 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 44 flow. Second operand 6 states and 545 transitions. [2023-11-19 08:05:18,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 140 flow [2023-11-19 08:05:18,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 34 transitions, 140 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:05:18,976 INFO L231 Difference]: Finished difference. Result has 31 places, 18 transitions, 50 flow [2023-11-19 08:05:18,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=50, PETRI_PLACES=31, PETRI_TRANSITIONS=18} [2023-11-19 08:05:18,978 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -4 predicate places. [2023-11-19 08:05:18,978 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 50 flow [2023-11-19 08:05:18,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 08:05:18,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:18,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:18,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:05:18,980 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:05:18,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:18,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1247099754, now seen corresponding path program 1 times [2023-11-19 08:05:18,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:18,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918897323] [2023-11-19 08:05:18,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:18,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:19,160 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 08:05:19,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:19,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918897323] [2023-11-19 08:05:19,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918897323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:19,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:19,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:19,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193531730] [2023-11-19 08:05:19,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:19,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:19,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:19,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:19,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:19,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 210 [2023-11-19 08:05:19,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:19,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:19,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 210 [2023-11-19 08:05:19,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:19,339 INFO L124 PetriNetUnfolderBase]: 439/701 cut-off events. [2023-11-19 08:05:19,339 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-19 08:05:19,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 701 events. 439/701 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3095 event pairs, 139 based on Foata normal form. 48/748 useless extension candidates. Maximal degree in co-relation 1506. Up to 557 conditions per place. [2023-11-19 08:05:19,346 INFO L140 encePairwiseOnDemand]: 205/210 looper letters, 24 selfloop transitions, 3 changer transitions 14/42 dead transitions. [2023-11-19 08:05:19,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 194 flow [2023-11-19 08:05:19,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:19,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:05:19,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 508 transitions. [2023-11-19 08:05:19,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838095238095238 [2023-11-19 08:05:19,350 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 508 transitions. [2023-11-19 08:05:19,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 508 transitions. [2023-11-19 08:05:19,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:19,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 508 transitions. [2023-11-19 08:05:19,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 08:05:19,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 08:05:19,358 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 08:05:19,359 INFO L175 Difference]: Start difference. First operand has 31 places, 18 transitions, 50 flow. Second operand 5 states and 508 transitions. [2023-11-19 08:05:19,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 194 flow [2023-11-19 08:05:19,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 42 transitions, 180 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 08:05:19,361 INFO L231 Difference]: Finished difference. Result has 34 places, 20 transitions, 70 flow [2023-11-19 08:05:19,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=27, 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=5, PETRI_FLOW=70, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2023-11-19 08:05:19,363 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-11-19 08:05:19,363 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 70 flow [2023-11-19 08:05:19,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:19,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:19,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:19,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:05:19,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:05:19,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:19,370 INFO L85 PathProgramCache]: Analyzing trace with hash 5350708, now seen corresponding path program 1 times [2023-11-19 08:05:19,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:19,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049878556] [2023-11-19 08:05:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:19,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:19,566 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 08:05:19,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:19,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049878556] [2023-11-19 08:05:19,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049878556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:19,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:19,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:05:19,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42570752] [2023-11-19 08:05:19,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:19,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:19,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:19,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:19,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:19,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 210 [2023-11-19 08:05:19,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 08:05:19,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:19,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 210 [2023-11-19 08:05:19,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:19,806 INFO L124 PetriNetUnfolderBase]: 499/817 cut-off events. [2023-11-19 08:05:19,806 INFO L125 PetriNetUnfolderBase]: For 292/292 co-relation queries the response was YES. [2023-11-19 08:05:19,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 817 events. 499/817 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3783 event pairs, 87 based on Foata normal form. 60/873 useless extension candidates. Maximal degree in co-relation 2027. Up to 335 conditions per place. [2023-11-19 08:05:19,814 INFO L140 encePairwiseOnDemand]: 203/210 looper letters, 26 selfloop transitions, 6 changer transitions 19/52 dead transitions. [2023-11-19 08:05:19,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 52 transitions, 256 flow [2023-11-19 08:05:19,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:19,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:05:19,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 676 transitions. [2023-11-19 08:05:19,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4598639455782313 [2023-11-19 08:05:19,818 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 676 transitions. [2023-11-19 08:05:19,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 676 transitions. [2023-11-19 08:05:19,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:19,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 676 transitions. [2023-11-19 08:05:19,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 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 08:05:19,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 210.0) internal successors, (1680), 8 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states 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 08:05:19,827 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 210.0) internal successors, (1680), 8 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states 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 08:05:19,827 INFO L175 Difference]: Start difference. First operand has 34 places, 20 transitions, 70 flow. Second operand 7 states and 676 transitions. [2023-11-19 08:05:19,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 52 transitions, 256 flow [2023-11-19 08:05:19,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 52 transitions, 244 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 08:05:19,832 INFO L231 Difference]: Finished difference. Result has 41 places, 21 transitions, 97 flow [2023-11-19 08:05:19,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=97, PETRI_PLACES=41, PETRI_TRANSITIONS=21} [2023-11-19 08:05:19,833 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-11-19 08:05:19,833 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 21 transitions, 97 flow [2023-11-19 08:05:19,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 08:05:19,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:19,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:19,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:05:19,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:05:19,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:19,835 INFO L85 PathProgramCache]: Analyzing trace with hash -407322016, now seen corresponding path program 1 times [2023-11-19 08:05:19,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:19,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685327514] [2023-11-19 08:05:19,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:19,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:19,975 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 08:05:19,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:19,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685327514] [2023-11-19 08:05:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685327514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:19,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:19,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:05:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243248701] [2023-11-19 08:05:19,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:19,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:19,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:19,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:19,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:20,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 210 [2023-11-19 08:05:20,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 21 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 08:05:20,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:20,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 210 [2023-11-19 08:05:20,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:20,335 INFO L124 PetriNetUnfolderBase]: 692/1117 cut-off events. [2023-11-19 08:05:20,336 INFO L125 PetriNetUnfolderBase]: For 2127/2127 co-relation queries the response was YES. [2023-11-19 08:05:20,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3383 conditions, 1117 events. 692/1117 cut-off events. For 2127/2127 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5109 event pairs, 87 based on Foata normal form. 60/1177 useless extension candidates. Maximal degree in co-relation 3372. Up to 321 conditions per place. [2023-11-19 08:05:20,347 INFO L140 encePairwiseOnDemand]: 202/210 looper letters, 44 selfloop transitions, 16 changer transitions 24/84 dead transitions. [2023-11-19 08:05:20,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 84 transitions, 550 flow [2023-11-19 08:05:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:05:20,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 08:05:20,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 862 transitions. [2023-11-19 08:05:20,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560846560846561 [2023-11-19 08:05:20,351 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 862 transitions. [2023-11-19 08:05:20,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 862 transitions. [2023-11-19 08:05:20,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:20,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 862 transitions. [2023-11-19 08:05:20,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 95.77777777777777) internal successors, (862), 9 states have internal predecessors, (862), 0 states have call successors, (0), 0 states 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 08:05:20,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states 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 08:05:20,361 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states 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 08:05:20,361 INFO L175 Difference]: Start difference. First operand has 41 places, 21 transitions, 97 flow. Second operand 9 states and 862 transitions. [2023-11-19 08:05:20,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 84 transitions, 550 flow [2023-11-19 08:05:20,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 84 transitions, 503 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-19 08:05:20,368 INFO L231 Difference]: Finished difference. Result has 50 places, 33 transitions, 243 flow [2023-11-19 08:05:20,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=243, PETRI_PLACES=50, PETRI_TRANSITIONS=33} [2023-11-19 08:05:20,369 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2023-11-19 08:05:20,370 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 33 transitions, 243 flow [2023-11-19 08:05:20,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 08:05:20,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:20,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:20,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:05:20,371 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:05:20,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:20,372 INFO L85 PathProgramCache]: Analyzing trace with hash 108220152, now seen corresponding path program 2 times [2023-11-19 08:05:20,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:20,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824271808] [2023-11-19 08:05:20,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:20,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:20,517 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 08:05:20,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:20,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824271808] [2023-11-19 08:05:20,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824271808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:20,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:20,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:20,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845972843] [2023-11-19 08:05:20,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:20,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:20,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:20,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:20,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:20,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 210 [2023-11-19 08:05:20,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 33 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states 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 08:05:20,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:20,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 210 [2023-11-19 08:05:20,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:20,844 INFO L124 PetriNetUnfolderBase]: 680/1113 cut-off events. [2023-11-19 08:05:20,844 INFO L125 PetriNetUnfolderBase]: For 4476/4476 co-relation queries the response was YES. [2023-11-19 08:05:20,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4297 conditions, 1113 events. 680/1113 cut-off events. For 4476/4476 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5046 event pairs, 171 based on Foata normal form. 60/1173 useless extension candidates. Maximal degree in co-relation 4281. Up to 322 conditions per place. [2023-11-19 08:05:20,856 INFO L140 encePairwiseOnDemand]: 202/210 looper letters, 30 selfloop transitions, 9 changer transitions 32/71 dead transitions. [2023-11-19 08:05:20,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 631 flow [2023-11-19 08:05:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:20,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:05:20,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 665 transitions. [2023-11-19 08:05:20,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2023-11-19 08:05:20,861 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 665 transitions. [2023-11-19 08:05:20,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 665 transitions. [2023-11-19 08:05:20,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:20,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 665 transitions. [2023-11-19 08:05:20,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states 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 08:05:20,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 210.0) internal successors, (1680), 8 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states 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 08:05:20,870 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 210.0) internal successors, (1680), 8 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states 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 08:05:20,870 INFO L175 Difference]: Start difference. First operand has 50 places, 33 transitions, 243 flow. Second operand 7 states and 665 transitions. [2023-11-19 08:05:20,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 631 flow [2023-11-19 08:05:20,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 71 transitions, 581 flow, removed 25 selfloop flow, removed 4 redundant places. [2023-11-19 08:05:20,888 INFO L231 Difference]: Finished difference. Result has 52 places, 25 transitions, 184 flow [2023-11-19 08:05:20,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=184, PETRI_PLACES=52, PETRI_TRANSITIONS=25} [2023-11-19 08:05:20,892 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2023-11-19 08:05:20,892 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 25 transitions, 184 flow [2023-11-19 08:05:20,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states 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 08:05:20,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:20,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:20,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:05:20,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:05:20,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:20,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1063532637, now seen corresponding path program 1 times [2023-11-19 08:05:20,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:20,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15075179] [2023-11-19 08:05:20,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:20,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:21,062 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 08:05:21,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:21,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15075179] [2023-11-19 08:05:21,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15075179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:21,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:21,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:21,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534982759] [2023-11-19 08:05:21,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:21,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:21,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:21,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:21,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:21,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 210 [2023-11-19 08:05:21,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 25 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 08:05:21,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:21,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 210 [2023-11-19 08:05:21,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:21,172 INFO L124 PetriNetUnfolderBase]: 205/374 cut-off events. [2023-11-19 08:05:21,172 INFO L125 PetriNetUnfolderBase]: For 1342/1343 co-relation queries the response was YES. [2023-11-19 08:05:21,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480 conditions, 374 events. 205/374 cut-off events. For 1342/1343 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1377 event pairs, 66 based on Foata normal form. 17/387 useless extension candidates. Maximal degree in co-relation 1463. Up to 307 conditions per place. [2023-11-19 08:05:21,178 INFO L140 encePairwiseOnDemand]: 205/210 looper letters, 36 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2023-11-19 08:05:21,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 376 flow [2023-11-19 08:05:21,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:21,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:05:21,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2023-11-19 08:05:21,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5095238095238095 [2023-11-19 08:05:21,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2023-11-19 08:05:21,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2023-11-19 08:05:21,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:21,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2023-11-19 08:05:21,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states 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 08:05:21,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states 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 08:05:21,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states 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 08:05:21,188 INFO L175 Difference]: Start difference. First operand has 52 places, 25 transitions, 184 flow. Second operand 3 states and 321 transitions. [2023-11-19 08:05:21,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 376 flow [2023-11-19 08:05:21,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 301 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-11-19 08:05:21,194 INFO L231 Difference]: Finished difference. Result has 43 places, 28 transitions, 161 flow [2023-11-19 08:05:21,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2023-11-19 08:05:21,195 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2023-11-19 08:05:21,196 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 161 flow [2023-11-19 08:05:21,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 08:05:21,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:21,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:21,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:05:21,197 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:05:21,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:21,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1771033296, now seen corresponding path program 1 times [2023-11-19 08:05:21,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:21,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53816357] [2023-11-19 08:05:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:21,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:21,338 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 08:05:21,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:21,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53816357] [2023-11-19 08:05:21,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53816357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:21,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:21,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:05:21,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746442865] [2023-11-19 08:05:21,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:21,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:21,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:21,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:21,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:21,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 210 [2023-11-19 08:05:21,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states 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 08:05:21,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:21,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 210 [2023-11-19 08:05:21,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:21,438 INFO L124 PetriNetUnfolderBase]: 118/237 cut-off events. [2023-11-19 08:05:21,438 INFO L125 PetriNetUnfolderBase]: For 350/354 co-relation queries the response was YES. [2023-11-19 08:05:21,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 924 conditions, 237 events. 118/237 cut-off events. For 350/354 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 795 event pairs, 29 based on Foata normal form. 25/258 useless extension candidates. Maximal degree in co-relation 912. Up to 101 conditions per place. [2023-11-19 08:05:21,441 INFO L140 encePairwiseOnDemand]: 205/210 looper letters, 43 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2023-11-19 08:05:21,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 396 flow [2023-11-19 08:05:21,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:05:21,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:05:21,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2023-11-19 08:05:21,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2023-11-19 08:05:21,450 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 427 transitions. [2023-11-19 08:05:21,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 427 transitions. [2023-11-19 08:05:21,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:21,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 427 transitions. [2023-11-19 08:05:21,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:21,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states 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 08:05:21,455 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states 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 08:05:21,456 INFO L175 Difference]: Start difference. First operand has 43 places, 28 transitions, 161 flow. Second operand 4 states and 427 transitions. [2023-11-19 08:05:21,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 396 flow [2023-11-19 08:05:21,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:05:21,459 INFO L231 Difference]: Finished difference. Result has 46 places, 31 transitions, 197 flow [2023-11-19 08:05:21,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2023-11-19 08:05:21,463 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2023-11-19 08:05:21,463 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 197 flow [2023-11-19 08:05:21,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states 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 08:05:21,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:21,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:21,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:05:21,464 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:05:21,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash 147189884, now seen corresponding path program 1 times [2023-11-19 08:05:21,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:21,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552512856] [2023-11-19 08:05:21,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:21,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:21,648 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 08:05:21,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:21,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552512856] [2023-11-19 08:05:21,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552512856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:21,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:21,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:21,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032099226] [2023-11-19 08:05:21,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:21,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:21,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:21,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:21,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:21,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 210 [2023-11-19 08:05:21,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 08:05:21,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:21,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 210 [2023-11-19 08:05:21,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:21,761 INFO L124 PetriNetUnfolderBase]: 97/191 cut-off events. [2023-11-19 08:05:21,762 INFO L125 PetriNetUnfolderBase]: For 443/450 co-relation queries the response was YES. [2023-11-19 08:05:21,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 191 events. 97/191 cut-off events. For 443/450 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 614 event pairs, 23 based on Foata normal form. 16/203 useless extension candidates. Maximal degree in co-relation 798. Up to 78 conditions per place. [2023-11-19 08:05:21,764 INFO L140 encePairwiseOnDemand]: 205/210 looper letters, 33 selfloop transitions, 10 changer transitions 7/52 dead transitions. [2023-11-19 08:05:21,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 420 flow [2023-11-19 08:05:21,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:21,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:05:21,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 524 transitions. [2023-11-19 08:05:21,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4990476190476191 [2023-11-19 08:05:21,767 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 524 transitions. [2023-11-19 08:05:21,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 524 transitions. [2023-11-19 08:05:21,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:21,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 524 transitions. [2023-11-19 08:05:21,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:21,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 08:05:21,773 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 08:05:21,773 INFO L175 Difference]: Start difference. First operand has 46 places, 31 transitions, 197 flow. Second operand 5 states and 524 transitions. [2023-11-19 08:05:21,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 420 flow [2023-11-19 08:05:21,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 369 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-11-19 08:05:21,777 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 189 flow [2023-11-19 08:05:21,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=189, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2023-11-19 08:05:21,778 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2023-11-19 08:05:21,778 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 189 flow [2023-11-19 08:05:21,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 08:05:21,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:21,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:21,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:05:21,779 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 08:05:21,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:21,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1366012127, now seen corresponding path program 1 times [2023-11-19 08:05:21,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:21,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954524358] [2023-11-19 08:05:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:21,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:21,907 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 08:05:21,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:21,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954524358] [2023-11-19 08:05:21,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954524358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:21,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:21,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:21,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335155020] [2023-11-19 08:05:21,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:21,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:21,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:21,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:21,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:21,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 210 [2023-11-19 08:05:21,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states 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 08:05:21,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:21,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 210 [2023-11-19 08:05:21,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:22,036 INFO L124 PetriNetUnfolderBase]: 107/228 cut-off events. [2023-11-19 08:05:22,036 INFO L125 PetriNetUnfolderBase]: For 497/499 co-relation queries the response was YES. [2023-11-19 08:05:22,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 228 events. 107/228 cut-off events. For 497/499 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 834 event pairs, 27 based on Foata normal form. 1/229 useless extension candidates. Maximal degree in co-relation 905. Up to 108 conditions per place. [2023-11-19 08:05:22,038 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2023-11-19 08:05:22,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 49 transitions, 405 flow [2023-11-19 08:05:22,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:22,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:05:22,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 490 transitions. [2023-11-19 08:05:22,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-11-19 08:05:22,041 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 490 transitions. [2023-11-19 08:05:22,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 490 transitions. [2023-11-19 08:05:22,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:22,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 490 transitions. [2023-11-19 08:05:22,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states 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 08:05:22,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 08:05:22,048 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 08:05:22,048 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 189 flow. Second operand 5 states and 490 transitions. [2023-11-19 08:05:22,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 49 transitions, 405 flow [2023-11-19 08:05:22,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 353 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-19 08:05:22,052 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2023-11-19 08:05:22,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2023-11-19 08:05:22,054 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2023-11-19 08:05:22,054 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2023-11-19 08:05:22,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states 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 08:05:22,059 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-19 08:05:22,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-19 08:05:22,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-19 08:05:22,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-19 08:05:22,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-19 08:05:22,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-19 08:05:22,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-11-19 08:05:22,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-11-19 08:05:22,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-11-19 08:05:22,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-19 08:05:22,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-19 08:05:22,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:05:22,062 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:22,066 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 08:05:22,067 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:05:22,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:05:22 BasicIcfg [2023-11-19 08:05:22,073 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:05:22,073 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:05:22,073 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:05:22,074 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:05:22,074 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:13" (3/4) ... [2023-11-19 08:05:22,077 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 08:05:22,081 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-19 08:05:22,082 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-19 08:05:22,082 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-19 08:05:22,088 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-19 08:05:22,089 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 08:05:22,089 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 08:05:22,089 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 08:05:22,177 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_076299b5-daf1-4f85-86c0-fc8d36b8b773/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:05:22,178 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_076299b5-daf1-4f85-86c0-fc8d36b8b773/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 08:05:22,178 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:05:22,179 INFO L158 Benchmark]: Toolchain (without parser) took 9755.78ms. Allocated memory was 157.3MB in the beginning and 234.9MB in the end (delta: 77.6MB). Free memory was 112.0MB in the beginning and 128.5MB in the end (delta: -16.6MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. [2023-11-19 08:05:22,179 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory was 85.4MB in the beginning and 85.4MB in the end (delta: 29.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:05:22,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 596.07ms. Allocated memory is still 157.3MB. Free memory was 112.0MB in the beginning and 91.4MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 08:05:22,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.11ms. Allocated memory is still 157.3MB. Free memory was 91.4MB in the beginning and 89.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:05:22,180 INFO L158 Benchmark]: Boogie Preprocessor took 61.40ms. Allocated memory is still 157.3MB. Free memory was 89.3MB in the beginning and 87.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:05:22,181 INFO L158 Benchmark]: RCFGBuilder took 587.66ms. Allocated memory is still 157.3MB. Free memory was 87.9MB in the beginning and 113.4MB in the end (delta: -25.5MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2023-11-19 08:05:22,181 INFO L158 Benchmark]: TraceAbstraction took 8322.99ms. Allocated memory was 157.3MB in the beginning and 234.9MB in the end (delta: 77.6MB). Free memory was 112.6MB in the beginning and 133.8MB in the end (delta: -21.2MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2023-11-19 08:05:22,182 INFO L158 Benchmark]: Witness Printer took 104.73ms. Allocated memory is still 234.9MB. Free memory was 133.8MB in the beginning and 128.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 08:05:22,184 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory was 85.4MB in the beginning and 85.4MB in the end (delta: 29.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 596.07ms. Allocated memory is still 157.3MB. Free memory was 112.0MB in the beginning and 91.4MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.11ms. Allocated memory is still 157.3MB. Free memory was 91.4MB in the beginning and 89.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.40ms. Allocated memory is still 157.3MB. Free memory was 89.3MB in the beginning and 87.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 587.66ms. Allocated memory is still 157.3MB. Free memory was 87.9MB in the beginning and 113.4MB in the end (delta: -25.5MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8322.99ms. Allocated memory was 157.3MB in the beginning and 234.9MB in the end (delta: 77.6MB). Free memory was 112.6MB in the beginning and 133.8MB in the end (delta: -21.2MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. * Witness Printer took 104.73ms. Allocated memory is still 234.9MB. Free memory was 133.8MB in the beginning and 128.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 107 PlacesBefore, 35 PlacesAfterwards, 100 TransitionsBefore, 26 TransitionsAfterwards, 2320 CoEnabledTransitionPairs, 5 FixpointIterations, 26 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 102 TotalNumberOfCompositions, 3163 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1892, independent: 1823, independent conditional: 0, independent unconditional: 1823, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1252, independent: 1231, independent conditional: 0, independent unconditional: 1231, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1892, independent: 592, independent conditional: 0, independent unconditional: 592, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 1252, unknown conditional: 0, unknown unconditional: 1252] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 778]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 134 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.2s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 473 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 375 mSDsluCounter, 118 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 905 IncrementalHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 42 mSDtfsCounter, 905 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=5, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 495 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 08:05:22,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_076299b5-daf1-4f85-86c0-fc8d36b8b773/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE