./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 4017723c7e4b1f7c431c7e7a6ea6ca9df8ac56fc590cd03021a11577cb455eff --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:58:41,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:58:41,839 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:58:41,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:58:41,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:58:41,880 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:58:41,882 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:58:41,883 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:58:41,885 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:58:41,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:58:41,892 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:58:41,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:58:41,893 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:58:41,896 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:58:41,896 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:58:41,897 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:58:41,898 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:58:41,898 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:58:41,899 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:58:41,900 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:58:41,900 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:58:41,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:58:41,902 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:58:41,902 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:58:41,903 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:58:41,903 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:58:41,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:58:41,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:58:41,906 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:58:41,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:58:41,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:58:41,909 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:58:41,909 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:58:41,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:58:41,910 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:58:41,911 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:58:41,911 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:58:41,912 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:58:41,912 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_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4017723c7e4b1f7c431c7e7a6ea6ca9df8ac56fc590cd03021a11577cb455eff [2023-11-06 22:58:42,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:58:42,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:58:42,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:58:42,374 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:58:42,376 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:58:42,378 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i [2023-11-06 22:58:46,209 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:58:46,618 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:58:46,619 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i [2023-11-06 22:58:46,658 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP/data/f2ac09612/54ddeefc4f2a444ba51b1420b8fe776e/FLAGf5f03b0da [2023-11-06 22:58:46,686 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP/data/f2ac09612/54ddeefc4f2a444ba51b1420b8fe776e [2023-11-06 22:58:46,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:58:46,696 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:58:46,701 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:58:46,703 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:58:46,710 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:58:46,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:46" (1/1) ... [2023-11-06 22:58:46,713 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1edf5b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:46, skipping insertion in model container [2023-11-06 22:58:46,713 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:46" (1/1) ... [2023-11-06 22:58:46,796 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:58:47,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:58:47,271 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:58:47,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:58:47,449 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:58:47,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47 WrapperNode [2023-11-06 22:58:47,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:58:47,452 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:58:47,452 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:58:47,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:58:47,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2023-11-06 22:58:47,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2023-11-06 22:58:47,523 INFO L138 Inliner]: procedures = 162, calls = 25, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 87 [2023-11-06 22:58:47,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:58:47,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:58:47,525 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:58:47,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:58:47,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2023-11-06 22:58:47,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2023-11-06 22:58:47,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2023-11-06 22:58:47,551 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2023-11-06 22:58:47,563 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2023-11-06 22:58:47,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2023-11-06 22:58:47,569 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2023-11-06 22:58:47,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2023-11-06 22:58:47,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:58:47,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:58:47,577 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:58:47,578 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:58:47,579 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2023-11-06 22:58:47,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:58:47,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:47,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:58:47,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:58:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:58:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:58:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:58:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:58:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:58:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:58:47,675 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:58:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:58:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:58:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:58:47,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:58:47,678 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:58:47,878 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:58:47,880 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:58:48,190 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:58:48,215 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:58:48,215 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:58:48,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:48 BoogieIcfgContainer [2023-11-06 22:58:48,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:58:48,246 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:58:48,246 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:58:48,252 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:58:48,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:58:46" (1/3) ... [2023-11-06 22:58:48,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1860cf34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:48, skipping insertion in model container [2023-11-06 22:58:48,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (2/3) ... [2023-11-06 22:58:48,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1860cf34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:48, skipping insertion in model container [2023-11-06 22:58:48,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:48" (3/3) ... [2023-11-06 22:58:48,260 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_25-struct_nr_true.i [2023-11-06 22:58:48,287 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:58:48,288 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-06 22:58:48,288 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:58:48,398 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:58:48,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 120 transitions, 247 flow [2023-11-06 22:58:48,521 INFO L124 PetriNetUnfolderBase]: 8/119 cut-off events. [2023-11-06 22:58:48,521 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:58:48,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 119 events. 8/119 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 181 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-11-06 22:58:48,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 120 transitions, 247 flow [2023-11-06 22:58:48,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 114 transitions, 234 flow [2023-11-06 22:58:48,548 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:58:48,566 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 114 transitions, 234 flow [2023-11-06 22:58:48,582 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 114 transitions, 234 flow [2023-11-06 22:58:48,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 114 transitions, 234 flow [2023-11-06 22:58:48,645 INFO L124 PetriNetUnfolderBase]: 8/114 cut-off events. [2023-11-06 22:58:48,645 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:58:48,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 114 events. 8/114 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 180 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-11-06 22:58:48,651 INFO L119 LiptonReduction]: Number of co-enabled transitions 2320 [2023-11-06 22:58:52,912 INFO L134 LiptonReduction]: Checked pairs total: 5918 [2023-11-06 22:58:52,912 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-11-06 22:58:52,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:58:52,947 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;@bb9b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:58:52,948 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-06 22:58:52,949 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:58:52,950 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:58:52,950 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:58:52,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:52,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:58:52,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:58:52,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:52,959 INFO L85 PathProgramCache]: Analyzing trace with hash 477, now seen corresponding path program 1 times [2023-11-06 22:58:52,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:52,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796105669] [2023-11-06 22:58:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:52,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:53,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:53,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:53,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796105669] [2023-11-06 22:58:53,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796105669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:53,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:53,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:58:53,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483369509] [2023-11-06 22:58:53,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:53,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:58:53,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:53,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:58:53,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:58:53,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 258 [2023-11-06 22:58:53,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 70 flow. Second operand has 2 states, 2 states have (on average 106.5) internal successors, (213), 2 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:53,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:53,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 258 [2023-11-06 22:58:53,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:53,345 INFO L124 PetriNetUnfolderBase]: 81/192 cut-off events. [2023-11-06 22:58:53,346 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:58:53,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 192 events. 81/192 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 738 event pairs, 81 based on Foata normal form. 10/141 useless extension candidates. Maximal degree in co-relation 368. Up to 185 conditions per place. [2023-11-06 22:58:53,352 INFO L140 encePairwiseOnDemand]: 251/258 looper letters, 22 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2023-11-06 22:58:53,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 96 flow [2023-11-06 22:58:53,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:58:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:58:53,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 241 transitions. [2023-11-06 22:58:53,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46705426356589147 [2023-11-06 22:58:53,380 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 241 transitions. [2023-11-06 22:58:53,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 241 transitions. [2023-11-06 22:58:53,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:53,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 241 transitions. [2023-11-06 22:58:53,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 120.5) internal successors, (241), 2 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:53,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:53,406 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:53,409 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 70 flow. Second operand 2 states and 241 transitions. [2023-11-06 22:58:53,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 96 flow [2023-11-06 22:58:53,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 23 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:58:53,415 INFO L231 Difference]: Finished difference. Result has 26 places, 23 transitions, 48 flow [2023-11-06 22:58:53,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=48, PETRI_PLACES=26, PETRI_TRANSITIONS=23} [2023-11-06 22:58:53,423 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -6 predicate places. [2023-11-06 22:58:53,423 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 48 flow [2023-11-06 22:58:53,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 106.5) internal successors, (213), 2 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:53,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:53,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:58:53,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:58:53,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:58:53,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:53,426 INFO L85 PathProgramCache]: Analyzing trace with hash 14795591, now seen corresponding path program 1 times [2023-11-06 22:58:53,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:53,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209863280] [2023-11-06 22:58:53,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:53,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:53,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:53,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209863280] [2023-11-06 22:58:53,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209863280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:53,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:53,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:58:53,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295568324] [2023-11-06 22:58:53,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:53,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:53,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:53,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:53,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:53,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 258 [2023-11-06 22:58:53,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:53,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:53,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 258 [2023-11-06 22:58:53,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:53,996 INFO L124 PetriNetUnfolderBase]: 90/205 cut-off events. [2023-11-06 22:58:53,997 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:58:54,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 205 events. 90/205 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 779 event pairs, 53 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 411. Up to 179 conditions per place. [2023-11-06 22:58:54,005 INFO L140 encePairwiseOnDemand]: 250/258 looper letters, 30 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2023-11-06 22:58:54,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 35 transitions, 142 flow [2023-11-06 22:58:54,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:54,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:54,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2023-11-06 22:58:54,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405684754521964 [2023-11-06 22:58:54,015 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2023-11-06 22:58:54,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2023-11-06 22:58:54,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:54,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2023-11-06 22:58:54,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,026 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,026 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 48 flow. Second operand 3 states and 341 transitions. [2023-11-06 22:58:54,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 35 transitions, 142 flow [2023-11-06 22:58:54,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:58:54,028 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 90 flow [2023-11-06 22:58:54,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2023-11-06 22:58:54,030 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -2 predicate places. [2023-11-06 22:58:54,031 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 90 flow [2023-11-06 22:58:54,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:54,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:58:54,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:58:54,036 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:58:54,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:54,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1333687185, now seen corresponding path program 1 times [2023-11-06 22:58:54,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:54,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146376943] [2023-11-06 22:58:54,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:54,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:54,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:54,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146376943] [2023-11-06 22:58:54,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146376943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:54,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:54,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:54,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95766384] [2023-11-06 22:58:54,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:54,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:58:54,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:54,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:58:54,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:58:54,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 258 [2023-11-06 22:58:54,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:54,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 258 [2023-11-06 22:58:54,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:54,421 INFO L124 PetriNetUnfolderBase]: 92/218 cut-off events. [2023-11-06 22:58:54,421 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-06 22:58:54,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 218 events. 92/218 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 892 event pairs, 30 based on Foata normal form. 13/190 useless extension candidates. Maximal degree in co-relation 531. Up to 145 conditions per place. [2023-11-06 22:58:54,423 INFO L140 encePairwiseOnDemand]: 248/258 looper letters, 39 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2023-11-06 22:58:54,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 250 flow [2023-11-06 22:58:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:58:54,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:58:54,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 635 transitions. [2023-11-06 22:58:54,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4102067183462532 [2023-11-06 22:58:54,428 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 635 transitions. [2023-11-06 22:58:54,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 635 transitions. [2023-11-06 22:58:54,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:54,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 635 transitions. [2023-11-06 22:58:54,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 258.0) internal successors, (1806), 7 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,437 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 258.0) internal successors, (1806), 7 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,437 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 90 flow. Second operand 6 states and 635 transitions. [2023-11-06 22:58:54,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 250 flow [2023-11-06 22:58:54,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 50 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:58:54,441 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 157 flow [2023-11-06 22:58:54,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=157, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-11-06 22:58:54,442 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2023-11-06 22:58:54,442 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 157 flow [2023-11-06 22:58:54,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:54,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:58:54,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:58:54,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:58:54,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:54,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1333652215, now seen corresponding path program 1 times [2023-11-06 22:58:54,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:54,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860399380] [2023-11-06 22:58:54,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:54,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:54,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:54,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:54,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860399380] [2023-11-06 22:58:54,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860399380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:54,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:54,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:58:54,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237485657] [2023-11-06 22:58:54,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:54,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:54,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:54,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:54,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:54,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 258 [2023-11-06 22:58:54,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:54,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 258 [2023-11-06 22:58:54,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:54,609 INFO L124 PetriNetUnfolderBase]: 94/226 cut-off events. [2023-11-06 22:58:54,609 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-11-06 22:58:54,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 226 events. 94/226 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 960 event pairs, 45 based on Foata normal form. 14/207 useless extension candidates. Maximal degree in co-relation 680. Up to 181 conditions per place. [2023-11-06 22:58:54,612 INFO L140 encePairwiseOnDemand]: 251/258 looper letters, 36 selfloop transitions, 9 changer transitions 0/45 dead transitions. [2023-11-06 22:58:54,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 293 flow [2023-11-06 22:58:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:54,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:54,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2023-11-06 22:58:54,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.437984496124031 [2023-11-06 22:58:54,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2023-11-06 22:58:54,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2023-11-06 22:58:54,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:54,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2023-11-06 22:58:54,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,632 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 157 flow. Second operand 3 states and 339 transitions. [2023-11-06 22:58:54,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 293 flow [2023-11-06 22:58:54,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 289 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-06 22:58:54,637 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 231 flow [2023-11-06 22:58:54,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-11-06 22:58:54,639 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2023-11-06 22:58:54,639 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 231 flow [2023-11-06 22:58:54,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:54,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:54,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:58:54,640 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:58:54,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:54,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1603588000, now seen corresponding path program 1 times [2023-11-06 22:58:54,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:54,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498171477] [2023-11-06 22:58:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:54,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:54,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:54,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498171477] [2023-11-06 22:58:54,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498171477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:54,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:54,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:54,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60545322] [2023-11-06 22:58:54,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:54,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:54,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:54,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:54,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:54,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 258 [2023-11-06 22:58:54,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:54,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 258 [2023-11-06 22:58:54,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:54,862 INFO L124 PetriNetUnfolderBase]: 3/53 cut-off events. [2023-11-06 22:58:54,862 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-06 22:58:54,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 53 events. 3/53 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 144 event pairs, 0 based on Foata normal form. 10/56 useless extension candidates. Maximal degree in co-relation 185. Up to 37 conditions per place. [2023-11-06 22:58:54,863 INFO L140 encePairwiseOnDemand]: 252/258 looper letters, 19 selfloop transitions, 6 changer transitions 0/26 dead transitions. [2023-11-06 22:58:54,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 26 transitions, 178 flow [2023-11-06 22:58:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:54,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:54,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2023-11-06 22:58:54,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42118863049095606 [2023-11-06 22:58:54,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2023-11-06 22:58:54,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2023-11-06 22:58:54,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:54,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2023-11-06 22:58:54,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,874 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 231 flow. Second operand 3 states and 326 transitions. [2023-11-06 22:58:54,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 26 transitions, 178 flow [2023-11-06 22:58:54,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 149 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-06 22:58:54,877 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 111 flow [2023-11-06 22:58:54,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-11-06 22:58:54,879 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-11-06 22:58:54,879 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 111 flow [2023-11-06 22:58:54,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:54,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:54,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:54,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:58:54,881 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:58:54,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:54,882 INFO L85 PathProgramCache]: Analyzing trace with hash -867290379, now seen corresponding path program 1 times [2023-11-06 22:58:54,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:54,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373718668] [2023-11-06 22:58:54,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:54,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:54,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:54,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373718668] [2023-11-06 22:58:54,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373718668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:54,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:54,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:58:54,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672330797] [2023-11-06 22:58:54,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:54,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:54,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:54,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:54,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:55,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 258 [2023-11-06 22:58:55,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:55,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:55,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 258 [2023-11-06 22:58:55,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:55,077 INFO L124 PetriNetUnfolderBase]: 2/43 cut-off events. [2023-11-06 22:58:55,078 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-06 22:58:55,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 43 events. 2/43 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 80 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 132. Up to 40 conditions per place. [2023-11-06 22:58:55,079 INFO L140 encePairwiseOnDemand]: 255/258 looper letters, 22 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-06 22:58:55,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 25 transitions, 155 flow [2023-11-06 22:58:55,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:55,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-11-06 22:58:55,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069767441860465 [2023-11-06 22:58:55,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-11-06 22:58:55,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-11-06 22:58:55,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:55,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-11-06 22:58:55,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:55,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:55,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:55,089 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 111 flow. Second operand 3 states and 315 transitions. [2023-11-06 22:58:55,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 25 transitions, 155 flow [2023-11-06 22:58:55,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 25 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:58:55,092 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 106 flow [2023-11-06 22:58:55,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=106, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-11-06 22:58:55,094 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-11-06 22:58:55,094 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 106 flow [2023-11-06 22:58:55,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:55,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:55,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:55,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:58:55,096 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:58:55,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash -867290380, now seen corresponding path program 1 times [2023-11-06 22:58:55,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:55,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881096984] [2023-11-06 22:58:55,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:55,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:55,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:55,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881096984] [2023-11-06 22:58:55,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881096984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:55,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:55,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:58:55,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043963135] [2023-11-06 22:58:55,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:55,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:55,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:55,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:55,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:55,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 258 [2023-11-06 22:58:55,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:55,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:55,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 258 [2023-11-06 22:58:55,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:55,276 INFO L124 PetriNetUnfolderBase]: 1/33 cut-off events. [2023-11-06 22:58:55,276 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:58:55,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 33 events. 1/33 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 38 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 98. Up to 30 conditions per place. [2023-11-06 22:58:55,277 INFO L140 encePairwiseOnDemand]: 255/258 looper letters, 20 selfloop transitions, 2 changer transitions 1/24 dead transitions. [2023-11-06 22:58:55,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 24 transitions, 149 flow [2023-11-06 22:58:55,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:55,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:55,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2023-11-06 22:58:55,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4018087855297158 [2023-11-06 22:58:55,281 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2023-11-06 22:58:55,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2023-11-06 22:58:55,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:55,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2023-11-06 22:58:55,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:55,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:55,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:55,289 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 106 flow. Second operand 3 states and 311 transitions. [2023-11-06 22:58:55,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 24 transitions, 149 flow [2023-11-06 22:58:55,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 145 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:58:55,291 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 99 flow [2023-11-06 22:58:55,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=99, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2023-11-06 22:58:55,293 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-11-06 22:58:55,293 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 99 flow [2023-11-06 22:58:55,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:55,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:55,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:55,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:58:55,295 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:58:55,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:55,296 INFO L85 PathProgramCache]: Analyzing trace with hash -242388189, now seen corresponding path program 1 times [2023-11-06 22:58:55,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:55,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427395049] [2023-11-06 22:58:55,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:55,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:55,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:55,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427395049] [2023-11-06 22:58:55,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427395049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:55,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:55,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:58:55,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455644110] [2023-11-06 22:58:55,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:55,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:58:55,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:55,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:58:55,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:58:55,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 258 [2023-11-06 22:58:55,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 99 flow. Second operand has 6 states, 6 states have (on average 96.83333333333333) internal successors, (581), 6 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:55,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:55,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 258 [2023-11-06 22:58:55,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:55,678 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-11-06 22:58:55,679 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:58:55,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 33 events. 0/33 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 1/34 useless extension candidates. Maximal degree in co-relation 0. Up to 15 conditions per place. [2023-11-06 22:58:55,679 INFO L140 encePairwiseOnDemand]: 249/258 looper letters, 17 selfloop transitions, 8 changer transitions 0/25 dead transitions. [2023-11-06 22:58:55,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 25 transitions, 155 flow [2023-11-06 22:58:55,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:58:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:58:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 690 transitions. [2023-11-06 22:58:55,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38205980066445183 [2023-11-06 22:58:55,685 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 690 transitions. [2023-11-06 22:58:55,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 690 transitions. [2023-11-06 22:58:55,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:55,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 690 transitions. [2023-11-06 22:58:55,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.57142857142857) internal successors, (690), 7 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:55,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:55,696 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:55,696 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 99 flow. Second operand 7 states and 690 transitions. [2023-11-06 22:58:55,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 25 transitions, 155 flow [2023-11-06 22:58:55,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 149 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:58:55,699 INFO L231 Difference]: Finished difference. Result has 36 places, 22 transitions, 107 flow [2023-11-06 22:58:55,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=107, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2023-11-06 22:58:55,701 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2023-11-06 22:58:55,701 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 107 flow [2023-11-06 22:58:55,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.83333333333333) internal successors, (581), 6 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:55,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:55,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:55,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:58:55,721 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:58:55,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:55,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1432177503, now seen corresponding path program 1 times [2023-11-06 22:58:55,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:55,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805894639] [2023-11-06 22:58:55,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:55,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:55,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:55,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805894639] [2023-11-06 22:58:55,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805894639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:55,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:55,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:58:55,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738976471] [2023-11-06 22:58:55,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:55,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:58:55,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:55,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:58:55,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:58:55,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 258 [2023-11-06 22:58:56,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:56,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:56,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 258 [2023-11-06 22:58:56,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:56,138 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2023-11-06 22:58:56,138 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-06 22:58:56,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 32 events. 0/32 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 29 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2023-11-06 22:58:56,139 INFO L140 encePairwiseOnDemand]: 250/258 looper letters, 17 selfloop transitions, 11 changer transitions 0/28 dead transitions. [2023-11-06 22:58:56,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 28 transitions, 186 flow [2023-11-06 22:58:56,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:58:56,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:58:56,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 884 transitions. [2023-11-06 22:58:56,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3807062876830319 [2023-11-06 22:58:56,146 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 884 transitions. [2023-11-06 22:58:56,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 884 transitions. [2023-11-06 22:58:56,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:56,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 884 transitions. [2023-11-06 22:58:56,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 98.22222222222223) internal successors, (884), 9 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:56,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:56,159 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:56,159 INFO L175 Difference]: Start difference. First operand has 36 places, 22 transitions, 107 flow. Second operand 9 states and 884 transitions. [2023-11-06 22:58:56,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 28 transitions, 186 flow [2023-11-06 22:58:56,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 28 transitions, 163 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:58:56,162 INFO L231 Difference]: Finished difference. Result has 37 places, 22 transitions, 113 flow [2023-11-06 22:58:56,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=113, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2023-11-06 22:58:56,163 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2023-11-06 22:58:56,164 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 113 flow [2023-11-06 22:58:56,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:56,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:56,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:56,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:58:56,165 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-06 22:58:56,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:56,166 INFO L85 PathProgramCache]: Analyzing trace with hash 669205330, now seen corresponding path program 1 times [2023-11-06 22:58:56,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:56,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535291018] [2023-11-06 22:58:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:56,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:56,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:56,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:56,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535291018] [2023-11-06 22:58:56,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535291018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:56,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:56,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:58:56,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877181528] [2023-11-06 22:58:56,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:56,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:56,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:56,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:56,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:56,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 258 [2023-11-06 22:58:56,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:56,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:56,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 258 [2023-11-06 22:58:56,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:58:56,429 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2023-11-06 22:58:56,430 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-06 22:58:56,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 30 events. 0/30 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 27 event pairs, 0 based on Foata normal form. 2/32 useless extension candidates. Maximal degree in co-relation 0. Up to 28 conditions per place. [2023-11-06 22:58:56,430 INFO L140 encePairwiseOnDemand]: 256/258 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-11-06 22:58:56,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 21 transitions, 149 flow [2023-11-06 22:58:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:58:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2023-11-06 22:58:56,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41214470284237725 [2023-11-06 22:58:56,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2023-11-06 22:58:56,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2023-11-06 22:58:56,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:58:56,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2023-11-06 22:58:56,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:56,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:56,439 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:56,439 INFO L175 Difference]: Start difference. First operand has 37 places, 22 transitions, 113 flow. Second operand 3 states and 319 transitions. [2023-11-06 22:58:56,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 21 transitions, 149 flow [2023-11-06 22:58:56,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 21 transitions, 118 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-06 22:58:56,441 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-11-06 22:58:56,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-11-06 22:58:56,442 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-11-06 22:58:56,443 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-11-06 22:58:56,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:56,446 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2023-11-06 22:58:56,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-06 22:58:56,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-06 22:58:56,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (8 of 12 remaining) [2023-11-06 22:58:56,447 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-06 22:58:56,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-06 22:58:56,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (5 of 12 remaining) [2023-11-06 22:58:56,448 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2023-11-06 22:58:56,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-11-06 22:58:56,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-11-06 22:58:56,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2023-11-06 22:58:56,449 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 12 remaining) [2023-11-06 22:58:56,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:58:56,450 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:56,456 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:58:56,457 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:58:56,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:58:56 BasicIcfg [2023-11-06 22:58:56,462 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:58:56,462 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:58:56,463 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:58:56,463 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:58:56,463 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:48" (3/4) ... [2023-11-06 22:58:56,465 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:58:56,471 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-06 22:58:56,477 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-06 22:58:56,477 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 22:58:56,478 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:58:56,478 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:58:56,538 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:58:56,539 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:58:56,539 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:58:56,540 INFO L158 Benchmark]: Toolchain (without parser) took 9844.38ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 100.8MB in the beginning and 66.8MB in the end (delta: 34.0MB). Peak memory consumption was 64.3MB. Max. memory is 16.1GB. [2023-11-06 22:58:56,541 INFO L158 Benchmark]: CDTParser took 0.73ms. Allocated memory is still 102.8MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:58:56,541 INFO L158 Benchmark]: CACSL2BoogieTranslator took 750.01ms. Allocated memory is still 140.5MB. Free memory was 100.8MB in the beginning and 81.8MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 22:58:56,542 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.82ms. Allocated memory is still 140.5MB. Free memory was 81.8MB in the beginning and 79.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:58:56,542 INFO L158 Benchmark]: Boogie Preprocessor took 51.59ms. Allocated memory is still 140.5MB. Free memory was 79.8MB in the beginning and 78.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:58:56,543 INFO L158 Benchmark]: RCFGBuilder took 641.23ms. Allocated memory is still 140.5MB. Free memory was 78.2MB in the beginning and 109.2MB in the end (delta: -31.1MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2023-11-06 22:58:56,543 INFO L158 Benchmark]: TraceAbstraction took 8215.92ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 110.8MB in the beginning and 69.9MB in the end (delta: 40.8MB). Peak memory consumption was 69.9MB. Max. memory is 16.1GB. [2023-11-06 22:58:56,544 INFO L158 Benchmark]: Witness Printer took 77.04ms. Allocated memory is still 169.9MB. Free memory was 69.9MB in the beginning and 66.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:58:56,547 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73ms. Allocated memory is still 102.8MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 750.01ms. Allocated memory is still 140.5MB. Free memory was 100.8MB in the beginning and 81.8MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.82ms. Allocated memory is still 140.5MB. Free memory was 81.8MB in the beginning and 79.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.59ms. Allocated memory is still 140.5MB. Free memory was 79.8MB in the beginning and 78.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 641.23ms. Allocated memory is still 140.5MB. Free memory was 78.2MB in the beginning and 109.2MB in the end (delta: -31.1MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8215.92ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 110.8MB in the beginning and 69.9MB in the end (delta: 40.8MB). Peak memory consumption was 69.9MB. Max. memory is 16.1GB. * Witness Printer took 77.04ms. Allocated memory is still 169.9MB. Free memory was 69.9MB in the beginning and 66.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 110 PlacesBefore, 32 PlacesAfterwards, 114 TransitionsBefore, 32 TransitionsAfterwards, 2320 CoEnabledTransitionPairs, 8 FixpointIterations, 50 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 138 TotalNumberOfCompositions, 5918 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2870, independent: 2614, independent conditional: 0, independent unconditional: 2614, dependent: 256, dependent conditional: 0, dependent unconditional: 256, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1517, independent: 1470, independent conditional: 0, independent unconditional: 1470, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2870, independent: 1144, independent conditional: 0, independent unconditional: 1144, dependent: 209, dependent conditional: 0, dependent unconditional: 209, unknown: 1517, unknown conditional: 0, unknown unconditional: 1517] , Statistics on independence cache: Total cache size (in pairs): 89, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 697]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: 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 3 procedures, 151 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: 8.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 417 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 222 mSDsluCounter, 159 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 81 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 869 IncrementalHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 78 mSDtfsCounter, 869 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231occurred in iteration=4, InterpolantAutomatonStates: 42, 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, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 332 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:58:56,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_891960f6-a325-4223-acf7-55705488712c/bin/uautomizer-verify-WvqO1wxjHP/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