./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/stateful01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c7c4a1-7c3a-453a-b652-827077843ffe/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c7c4a1-7c3a-453a-b652-827077843ffe/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_c6c7c4a1-7c3a-453a-b652-827077843ffe/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c7c4a1-7c3a-453a-b652-827077843ffe/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stateful01-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c7c4a1-7c3a-453a-b652-827077843ffe/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_c6c7c4a1-7c3a-453a-b652-827077843ffe/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 e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:41:07,363 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:41:07,451 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c7c4a1-7c3a-453a-b652-827077843ffe/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:41:07,464 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:41:07,465 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:41:07,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:41:07,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:41:07,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:41:07,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:41:07,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:41:07,513 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:41:07,514 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:41:07,514 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:41:07,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:41:07,516 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:41:07,517 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:41:07,517 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:41:07,518 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:41:07,518 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:41:07,519 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:41:07,519 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:41:07,520 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:41:07,520 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:41:07,520 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:41:07,521 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:41:07,521 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:41:07,522 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:41:07,522 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:41:07,523 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:41:07,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:07,525 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:41:07,525 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:41:07,525 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:41:07,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:41:07,525 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:41:07,526 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:41:07,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:41:07,526 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:41:07,526 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_c6c7c4a1-7c3a-453a-b652-827077843ffe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c7c4a1-7c3a-453a-b652-827077843ffe/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e [2023-11-19 07:41:07,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:41:07,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:41:07,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:41:07,862 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:41:07,863 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:41:07,864 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c7c4a1-7c3a-453a-b652-827077843ffe/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/stateful01-2.i [2023-11-19 07:41:10,909 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:41:11,269 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:41:11,270 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c7c4a1-7c3a-453a-b652-827077843ffe/sv-benchmarks/c/pthread/stateful01-2.i [2023-11-19 07:41:11,286 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c7c4a1-7c3a-453a-b652-827077843ffe/bin/uautomizer-verify-uCwYo4JHxu/data/7f359a827/9702ceec1e6744ec9a856ce037407a43/FLAG293242169 [2023-11-19 07:41:11,308 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c7c4a1-7c3a-453a-b652-827077843ffe/bin/uautomizer-verify-uCwYo4JHxu/data/7f359a827/9702ceec1e6744ec9a856ce037407a43 [2023-11-19 07:41:11,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:41:11,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:41:11,320 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:11,320 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:41:11,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:41:11,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:11" (1/1) ... [2023-11-19 07:41:11,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f16b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:11, skipping insertion in model container [2023-11-19 07:41:11,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:11" (1/1) ... [2023-11-19 07:41:11,395 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:41:11,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:11,865 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:41:11,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:11,971 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:41:11,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:11 WrapperNode [2023-11-19 07:41:11,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:11,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:11,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:41:11,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:41:11,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:11" (1/1) ... [2023-11-19 07:41:12,002 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:11" (1/1) ... [2023-11-19 07:41:12,043 INFO L138 Inliner]: procedures = 168, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-11-19 07:41:12,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:12,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:41:12,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:41:12,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:41:12,056 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:11" (1/1) ... [2023-11-19 07:41:12,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:11" (1/1) ... [2023-11-19 07:41:12,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:11" (1/1) ... [2023-11-19 07:41:12,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:11" (1/1) ... [2023-11-19 07:41:12,080 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:11" (1/1) ... [2023-11-19 07:41:12,082 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:11" (1/1) ... [2023-11-19 07:41:12,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:11" (1/1) ... [2023-11-19 07:41:12,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:11" (1/1) ... [2023-11-19 07:41:12,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:41:12,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:41:12,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:41:12,091 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:41:12,092 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:11" (1/1) ... [2023-11-19 07:41:12,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:12,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c7c4a1-7c3a-453a-b652-827077843ffe/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:12,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c7c4a1-7c3a-453a-b652-827077843ffe/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:12,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c7c4a1-7c3a-453a-b652-827077843ffe/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:41:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:41:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:41:12,202 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:41:12,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:41:12,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:41:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:41:12,203 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:41:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:41:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:41:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:41:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:41:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:41:12,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:41:12,206 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:41:12,426 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:41:12,428 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:41:12,760 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:41:12,771 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:41:12,771 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:41:12,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:12 BoogieIcfgContainer [2023-11-19 07:41:12,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:41:12,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:41:12,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:41:12,783 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:41:12,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:41:11" (1/3) ... [2023-11-19 07:41:12,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5435e150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:12, skipping insertion in model container [2023-11-19 07:41:12,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:11" (2/3) ... [2023-11-19 07:41:12,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5435e150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:12, skipping insertion in model container [2023-11-19 07:41:12,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:12" (3/3) ... [2023-11-19 07:41:12,788 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2023-11-19 07:41:12,831 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:41:12,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-19 07:41:12,831 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:41:12,953 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:41:13,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 106 transitions, 226 flow [2023-11-19 07:41:13,116 INFO L124 PetriNetUnfolderBase]: 2/104 cut-off events. [2023-11-19 07:41:13,116 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:41:13,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 104 events. 2/104 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-11-19 07:41:13,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 106 transitions, 226 flow [2023-11-19 07:41:13,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 99 transitions, 210 flow [2023-11-19 07:41:13,135 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:41:13,152 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 99 transitions, 210 flow [2023-11-19 07:41:13,156 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 99 transitions, 210 flow [2023-11-19 07:41:13,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 99 transitions, 210 flow [2023-11-19 07:41:13,215 INFO L124 PetriNetUnfolderBase]: 2/99 cut-off events. [2023-11-19 07:41:13,216 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:41:13,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 99 events. 2/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2023-11-19 07:41:13,220 INFO L119 LiptonReduction]: Number of co-enabled transitions 940 [2023-11-19 07:41:18,055 INFO L134 LiptonReduction]: Checked pairs total: 3678 [2023-11-19 07:41:18,056 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-11-19 07:41:18,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:41:18,080 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;@5352806a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:41:18,080 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-19 07:41:18,082 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:41:18,082 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:41:18,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:18,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:18,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:41:18,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:41:18,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:18,089 INFO L85 PathProgramCache]: Analyzing trace with hash 372, now seen corresponding path program 1 times [2023-11-19 07:41:18,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:18,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659776115] [2023-11-19 07:41:18,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:18,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:18,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:18,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659776115] [2023-11-19 07:41:18,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659776115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:18,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:18,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:41:18,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759360648] [2023-11-19 07:41:18,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:18,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:41:18,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:18,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:41:18,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:41:18,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 198 [2023-11-19 07:41:18,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:18,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:18,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 198 [2023-11-19 07:41:18,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:18,458 INFO L124 PetriNetUnfolderBase]: 203/427 cut-off events. [2023-11-19 07:41:18,458 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-19 07:41:18,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 427 events. 203/427 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1968 event pairs, 203 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 728. Up to 372 conditions per place. [2023-11-19 07:41:18,469 INFO L140 encePairwiseOnDemand]: 196/198 looper letters, 25 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2023-11-19 07:41:18,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 122 flow [2023-11-19 07:41:18,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:41:18,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:41:18,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 225 transitions. [2023-11-19 07:41:18,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2023-11-19 07:41:18,490 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 225 transitions. [2023-11-19 07:41:18,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 225 transitions. [2023-11-19 07:41:18,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:18,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 225 transitions. [2023-11-19 07:41:18,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:18,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:18,512 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:18,514 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 76 flow. Second operand 2 states and 225 transitions. [2023-11-19 07:41:18,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 122 flow [2023-11-19 07:41:18,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:41:18,520 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 64 flow [2023-11-19 07:41:18,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=2, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-11-19 07:41:18,529 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-11-19 07:41:18,529 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 64 flow [2023-11-19 07:41:18,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:18,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:18,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:41:18,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:41:18,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:41:18,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:18,534 INFO L85 PathProgramCache]: Analyzing trace with hash 366469, now seen corresponding path program 1 times [2023-11-19 07:41:18,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:18,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049753482] [2023-11-19 07:41:18,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:18,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:18,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:18,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:18,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049753482] [2023-11-19 07:41:18,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049753482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:18,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:18,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:41:18,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551280026] [2023-11-19 07:41:18,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:18,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:18,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:18,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:18,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:18,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 198 [2023-11-19 07:41:18,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:18,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:18,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 198 [2023-11-19 07:41:18,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:19,056 INFO L124 PetriNetUnfolderBase]: 194/404 cut-off events. [2023-11-19 07:41:19,056 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:19,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 404 events. 194/404 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1821 event pairs, 194 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 762. Up to 350 conditions per place. [2023-11-19 07:41:19,064 INFO L140 encePairwiseOnDemand]: 194/198 looper letters, 21 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-11-19 07:41:19,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 106 flow [2023-11-19 07:41:19,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:19,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-11-19 07:41:19,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117845117845118 [2023-11-19 07:41:19,073 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-11-19 07:41:19,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-11-19 07:41:19,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:19,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-11-19 07:41:19,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,081 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,081 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 64 flow. Second operand 3 states and 304 transitions. [2023-11-19 07:41:19,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 106 flow [2023-11-19 07:41:19,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 106 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:41:19,083 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 64 flow [2023-11-19 07:41:19,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-11-19 07:41:19,087 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-11-19 07:41:19,088 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 64 flow [2023-11-19 07:41:19,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:19,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:41:19,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:41:19,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:41:19,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:19,095 INFO L85 PathProgramCache]: Analyzing trace with hash 366467, now seen corresponding path program 1 times [2023-11-19 07:41:19,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:19,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24103044] [2023-11-19 07:41:19,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:19,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:19,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:19,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:19,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24103044] [2023-11-19 07:41:19,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24103044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:19,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:19,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:41:19,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228375277] [2023-11-19 07:41:19,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:19,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:19,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:19,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:19,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:19,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 198 [2023-11-19 07:41:19,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:19,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 198 [2023-11-19 07:41:19,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:19,365 INFO L124 PetriNetUnfolderBase]: 185/381 cut-off events. [2023-11-19 07:41:19,365 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:19,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 381 events. 185/381 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1693 event pairs, 185 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 721. Up to 330 conditions per place. [2023-11-19 07:41:19,386 INFO L140 encePairwiseOnDemand]: 194/198 looper letters, 19 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-11-19 07:41:19,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 102 flow [2023-11-19 07:41:19,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:19,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:19,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-11-19 07:41:19,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882154882154882 [2023-11-19 07:41:19,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-11-19 07:41:19,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-11-19 07:41:19,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:19,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-11-19 07:41:19,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,393 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,393 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 64 flow. Second operand 3 states and 290 transitions. [2023-11-19 07:41:19,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 102 flow [2023-11-19 07:41:19,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:19,395 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 60 flow [2023-11-19 07:41:19,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-11-19 07:41:19,396 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -7 predicate places. [2023-11-19 07:41:19,397 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 60 flow [2023-11-19 07:41:19,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:19,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:41:19,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:41:19,398 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:41:19,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:19,399 INFO L85 PathProgramCache]: Analyzing trace with hash 352183673, now seen corresponding path program 1 times [2023-11-19 07:41:19,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:19,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788884237] [2023-11-19 07:41:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:19,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:19,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:19,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788884237] [2023-11-19 07:41:19,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788884237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:19,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:19,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:41:19,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116308612] [2023-11-19 07:41:19,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:19,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:19,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:19,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:19,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:19,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 198 [2023-11-19 07:41:19,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:19,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 198 [2023-11-19 07:41:19,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:19,647 INFO L124 PetriNetUnfolderBase]: 136/291 cut-off events. [2023-11-19 07:41:19,648 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:19,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 291 events. 136/291 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1185 event pairs, 136 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 552. Up to 251 conditions per place. [2023-11-19 07:41:19,651 INFO L140 encePairwiseOnDemand]: 195/198 looper letters, 18 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-19 07:41:19,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 98 flow [2023-11-19 07:41:19,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-11-19 07:41:19,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2023-11-19 07:41:19,653 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-11-19 07:41:19,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-11-19 07:41:19,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:19,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-11-19 07:41:19,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,658 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 60 flow. Second operand 3 states and 300 transitions. [2023-11-19 07:41:19,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 98 flow [2023-11-19 07:41:19,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 94 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:19,661 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 58 flow [2023-11-19 07:41:19,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-11-19 07:41:19,663 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-11-19 07:41:19,663 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 58 flow [2023-11-19 07:41:19,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:19,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:41:19,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:41:19,664 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:41:19,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:19,665 INFO L85 PathProgramCache]: Analyzing trace with hash 352183675, now seen corresponding path program 1 times [2023-11-19 07:41:19,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:19,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275066890] [2023-11-19 07:41:19,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:19,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:19,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:19,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275066890] [2023-11-19 07:41:19,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275066890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:19,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:19,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:41:19,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359932005] [2023-11-19 07:41:19,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:19,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:19,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:19,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:19,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:19,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 198 [2023-11-19 07:41:19,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:19,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 198 [2023-11-19 07:41:19,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:19,932 INFO L124 PetriNetUnfolderBase]: 87/201 cut-off events. [2023-11-19 07:41:19,933 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:19,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 201 events. 87/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 737 event pairs, 87 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 383. Up to 172 conditions per place. [2023-11-19 07:41:19,937 INFO L140 encePairwiseOnDemand]: 195/198 looper letters, 17 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-11-19 07:41:19,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 94 flow [2023-11-19 07:41:19,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:19,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:19,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-11-19 07:41:19,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2023-11-19 07:41:19,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-11-19 07:41:19,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-11-19 07:41:19,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:19,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-11-19 07:41:19,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,946 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,946 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 58 flow. Second operand 3 states and 275 transitions. [2023-11-19 07:41:19,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 94 flow [2023-11-19 07:41:19,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:19,949 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 56 flow [2023-11-19 07:41:19,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-11-19 07:41:19,953 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-11-19 07:41:19,954 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 56 flow [2023-11-19 07:41:19,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:19,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:19,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:19,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:41:19,955 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:41:19,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:19,956 INFO L85 PathProgramCache]: Analyzing trace with hash 116319758, now seen corresponding path program 1 times [2023-11-19 07:41:19,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:19,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591478331] [2023-11-19 07:41:19,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:19,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:20,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:20,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591478331] [2023-11-19 07:41:20,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591478331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:20,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:20,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:41:20,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647639228] [2023-11-19 07:41:20,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:20,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:20,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:20,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:20,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:20,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 198 [2023-11-19 07:41:20,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:20,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:20,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 198 [2023-11-19 07:41:20,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:20,556 INFO L124 PetriNetUnfolderBase]: 87/200 cut-off events. [2023-11-19 07:41:20,556 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:20,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 200 events. 87/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 736 event pairs, 87 based on Foata normal form. 1/196 useless extension candidates. Maximal degree in co-relation 380. Up to 172 conditions per place. [2023-11-19 07:41:20,558 INFO L140 encePairwiseOnDemand]: 196/198 looper letters, 17 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-11-19 07:41:20,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 23 transitions, 88 flow [2023-11-19 07:41:20,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:20,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:20,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-11-19 07:41:20,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49663299663299665 [2023-11-19 07:41:20,561 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-11-19 07:41:20,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-11-19 07:41:20,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:20,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-11-19 07:41:20,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:20,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:20,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:20,565 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 56 flow. Second operand 3 states and 295 transitions. [2023-11-19 07:41:20,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 23 transitions, 88 flow [2023-11-19 07:41:20,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 23 transitions, 87 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:41:20,568 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 53 flow [2023-11-19 07:41:20,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-11-19 07:41:20,570 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-11-19 07:41:20,571 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 53 flow [2023-11-19 07:41:20,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:20,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:20,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:20,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:41:20,572 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:41:20,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:20,573 INFO L85 PathProgramCache]: Analyzing trace with hash 116319745, now seen corresponding path program 1 times [2023-11-19 07:41:20,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:20,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320947101] [2023-11-19 07:41:20,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:20,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:20,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:20,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320947101] [2023-11-19 07:41:20,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320947101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:20,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:20,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:41:20,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072986253] [2023-11-19 07:41:20,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:20,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:41:20,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:20,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:41:20,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:41:20,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 198 [2023-11-19 07:41:20,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 53 flow. Second operand has 6 states, 6 states have (on average 95.33333333333333) internal successors, (572), 6 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:20,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:20,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 198 [2023-11-19 07:41:20,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:21,068 INFO L124 PetriNetUnfolderBase]: 190/434 cut-off events. [2023-11-19 07:41:21,068 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:41:21,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 434 events. 190/434 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2136 event pairs, 35 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 825. Up to 118 conditions per place. [2023-11-19 07:41:21,072 INFO L140 encePairwiseOnDemand]: 192/198 looper letters, 40 selfloop transitions, 6 changer transitions 22/71 dead transitions. [2023-11-19 07:41:21,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 71 transitions, 292 flow [2023-11-19 07:41:21,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:41:21,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:41:21,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 897 transitions. [2023-11-19 07:41:21,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033670033670034 [2023-11-19 07:41:21,078 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 897 transitions. [2023-11-19 07:41:21,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 897 transitions. [2023-11-19 07:41:21,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:21,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 897 transitions. [2023-11-19 07:41:21,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.66666666666667) internal successors, (897), 9 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:21,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:21,090 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:21,091 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 53 flow. Second operand 9 states and 897 transitions. [2023-11-19 07:41:21,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 71 transitions, 292 flow [2023-11-19 07:41:21,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 71 transitions, 291 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:41:21,096 INFO L231 Difference]: Finished difference. Result has 43 places, 27 transitions, 93 flow [2023-11-19 07:41:21,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=93, PETRI_PLACES=43, PETRI_TRANSITIONS=27} [2023-11-19 07:41:21,097 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-11-19 07:41:21,098 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 27 transitions, 93 flow [2023-11-19 07:41:21,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.33333333333333) internal successors, (572), 6 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:21,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:21,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:21,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:41:21,099 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:41:21,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:21,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1482572513, now seen corresponding path program 2 times [2023-11-19 07:41:21,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:21,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718570109] [2023-11-19 07:41:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:21,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:21,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:21,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718570109] [2023-11-19 07:41:21,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718570109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:21,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:21,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:21,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88046273] [2023-11-19 07:41:21,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:21,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:21,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:21,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:21,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:21,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 198 [2023-11-19 07:41:21,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 27 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:21,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:21,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 198 [2023-11-19 07:41:21,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:21,361 INFO L124 PetriNetUnfolderBase]: 28/103 cut-off events. [2023-11-19 07:41:21,362 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-19 07:41:21,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 103 events. 28/103 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 263 event pairs, 12 based on Foata normal form. 16/119 useless extension candidates. Maximal degree in co-relation 221. Up to 44 conditions per place. [2023-11-19 07:41:21,363 INFO L140 encePairwiseOnDemand]: 190/198 looper letters, 14 selfloop transitions, 8 changer transitions 3/29 dead transitions. [2023-11-19 07:41:21,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 29 transitions, 136 flow [2023-11-19 07:41:21,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:21,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:21,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-11-19 07:41:21,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49158249158249157 [2023-11-19 07:41:21,366 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-11-19 07:41:21,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-11-19 07:41:21,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:21,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-11-19 07:41:21,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:21,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:21,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:21,370 INFO L175 Difference]: Start difference. First operand has 43 places, 27 transitions, 93 flow. Second operand 3 states and 292 transitions. [2023-11-19 07:41:21,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 29 transitions, 136 flow [2023-11-19 07:41:21,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 126 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-19 07:41:21,376 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 76 flow [2023-11-19 07:41:21,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-11-19 07:41:21,379 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -4 predicate places. [2023-11-19 07:41:21,379 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 76 flow [2023-11-19 07:41:21,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:21,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:21,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:21,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:41:21,380 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:41:21,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:21,381 INFO L85 PathProgramCache]: Analyzing trace with hash -762408815, now seen corresponding path program 3 times [2023-11-19 07:41:21,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:21,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21273716] [2023-11-19 07:41:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:21,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:21,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:21,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21273716] [2023-11-19 07:41:21,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21273716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:21,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:21,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:41:21,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345878109] [2023-11-19 07:41:21,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:21,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:41:21,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:21,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:41:21,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:41:21,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 198 [2023-11-19 07:41:21,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 76 flow. Second operand has 6 states, 6 states have (on average 95.33333333333333) internal successors, (572), 6 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:21,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:21,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 198 [2023-11-19 07:41:21,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:21,744 INFO L124 PetriNetUnfolderBase]: 31/99 cut-off events. [2023-11-19 07:41:21,744 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-19 07:41:21,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 99 events. 31/99 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 221 event pairs, 6 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 242. Up to 45 conditions per place. [2023-11-19 07:41:21,745 INFO L140 encePairwiseOnDemand]: 192/198 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-11-19 07:41:21,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 146 flow [2023-11-19 07:41:21,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:41:21,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:41:21,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 671 transitions. [2023-11-19 07:41:21,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2023-11-19 07:41:21,750 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 671 transitions. [2023-11-19 07:41:21,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 671 transitions. [2023-11-19 07:41:21,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:21,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 671 transitions. [2023-11-19 07:41:21,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.85714285714286) internal successors, (671), 7 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:21,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:21,758 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:21,758 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 76 flow. Second operand 7 states and 671 transitions. [2023-11-19 07:41:21,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 146 flow [2023-11-19 07:41:21,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 131 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-19 07:41:21,761 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-11-19 07:41:21,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-11-19 07:41:21,762 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-11-19 07:41:21,763 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-11-19 07:41:21,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.33333333333333) internal successors, (572), 6 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:21,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-19 07:41:21,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-19 07:41:21,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-19 07:41:21,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-11-19 07:41:21,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-19 07:41:21,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-19 07:41:21,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-11-19 07:41:21,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-11-19 07:41:21,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-11-19 07:41:21,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-11-19 07:41:21,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-11-19 07:41:21,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-11-19 07:41:21,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:41:21,775 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:21,780 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:41:21,780 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:41:21,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:41:21 BasicIcfg [2023-11-19 07:41:21,785 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:41:21,786 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:41:21,786 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:41:21,786 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:41:21,786 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:12" (3/4) ... [2023-11-19 07:41:21,789 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:41:21,793 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 07:41:21,794 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 07:41:21,801 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-19 07:41:21,801 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-19 07:41:21,801 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:41:21,802 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:41:21,901 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c7c4a1-7c3a-453a-b652-827077843ffe/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:41:21,901 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c7c4a1-7c3a-453a-b652-827077843ffe/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:41:21,901 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:41:21,902 INFO L158 Benchmark]: Toolchain (without parser) took 10585.09ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 96.9MB in the beginning and 71.9MB in the end (delta: 25.0MB). Peak memory consumption was 89.2MB. Max. memory is 16.1GB. [2023-11-19 07:41:21,902 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 116.4MB in the end (delta: 126.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:41:21,903 INFO L158 Benchmark]: CACSL2BoogieTranslator took 652.56ms. Allocated memory is still 142.6MB. Free memory was 96.9MB in the beginning and 77.2MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 07:41:21,903 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.55ms. Allocated memory is still 142.6MB. Free memory was 77.2MB in the beginning and 75.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:41:21,903 INFO L158 Benchmark]: Boogie Preprocessor took 44.51ms. Allocated memory is still 142.6MB. Free memory was 75.1MB in the beginning and 73.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:41:21,904 INFO L158 Benchmark]: RCFGBuilder took 685.58ms. Allocated memory is still 142.6MB. Free memory was 73.5MB in the beginning and 57.9MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 07:41:21,904 INFO L158 Benchmark]: TraceAbstraction took 9006.27ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 57.5MB in the beginning and 76.1MB in the end (delta: -18.6MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2023-11-19 07:41:21,905 INFO L158 Benchmark]: Witness Printer took 115.84ms. Allocated memory is still 207.6MB. Free memory was 76.1MB in the beginning and 71.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:41:21,907 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 116.4MB in the end (delta: 126.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 652.56ms. Allocated memory is still 142.6MB. Free memory was 96.9MB in the beginning and 77.2MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.55ms. Allocated memory is still 142.6MB. Free memory was 77.2MB in the beginning and 75.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.51ms. Allocated memory is still 142.6MB. Free memory was 75.1MB in the beginning and 73.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 685.58ms. Allocated memory is still 142.6MB. Free memory was 73.5MB in the beginning and 57.9MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9006.27ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 57.5MB in the beginning and 76.1MB in the end (delta: -18.6MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. * Witness Printer took 115.84ms. Allocated memory is still 207.6MB. Free memory was 76.1MB in the beginning and 71.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 104 PlacesBefore, 39 PlacesAfterwards, 99 TransitionsBefore, 32 TransitionsAfterwards, 940 CoEnabledTransitionPairs, 7 FixpointIterations, 55 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 92 TotalNumberOfCompositions, 3678 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1777, independent: 1586, independent conditional: 0, independent unconditional: 1586, dependent: 191, dependent conditional: 0, dependent unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 465, independent: 441, independent conditional: 0, independent unconditional: 441, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1777, independent: 1145, independent conditional: 0, independent unconditional: 1145, dependent: 167, dependent conditional: 0, dependent unconditional: 167, unknown: 465, unknown conditional: 0, unknown unconditional: 465] , Statistics on independence cache: Total cache size (in pairs): 100, Positive cache size: 89, Positive conditional cache size: 0, Positive unconditional cache size: 89, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 714]: 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 5 procedures, 135 locations, 12 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: 8.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 499 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 252 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 758 IncrementalHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 39 mSDtfsCounter, 758 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=7, InterpolantAutomatonStates: 36, 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, 1.3s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 572 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:41:21,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c7c4a1-7c3a-453a-b652-827077843ffe/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE