./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_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_9914ac24-dddc-40ee-bbaa-56a80d940682/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9914ac24-dddc-40ee-bbaa-56a80d940682/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_9914ac24-dddc-40ee-bbaa-56a80d940682/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9914ac24-dddc-40ee-bbaa-56a80d940682/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9914ac24-dddc-40ee-bbaa-56a80d940682/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_9914ac24-dddc-40ee-bbaa-56a80d940682/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 d5772eac83993f999ed7a0d2c72e283c734e18136b4020af8f8e407255c20c04 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:14:04,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:14:04,876 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9914ac24-dddc-40ee-bbaa-56a80d940682/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:14:04,887 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:14:04,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:14:04,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:14:04,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:14:04,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:14:04,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:14:04,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:14:04,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:14:04,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:14:04,938 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:14:04,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:14:04,941 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:14:04,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:14:04,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:14:04,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:14:04,943 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:14:04,943 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:14:04,944 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:14:04,945 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:14:04,945 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:14:04,947 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:14:04,948 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:14:04,948 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:14:04,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:14:04,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:14:04,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:14:04,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:14:04,952 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:14:04,953 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:14:04,953 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:14:04,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:14:04,953 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:14:04,954 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:14:04,954 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:14:04,954 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:14:04,954 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_9914ac24-dddc-40ee-bbaa-56a80d940682/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9914ac24-dddc-40ee-bbaa-56a80d940682/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5772eac83993f999ed7a0d2c72e283c734e18136b4020af8f8e407255c20c04 [2023-11-06 22:14:05,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:14:05,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:14:05,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:14:05,390 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:14:05,391 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:14:05,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9914ac24-dddc-40ee-bbaa-56a80d940682/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i [2023-11-06 22:14:08,546 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:14:08,894 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:14:08,894 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9914ac24-dddc-40ee-bbaa-56a80d940682/sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i [2023-11-06 22:14:08,929 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9914ac24-dddc-40ee-bbaa-56a80d940682/bin/uautomizer-verify-WvqO1wxjHP/data/b5c46ea8a/f7c2a8db400444a0aa3e12128855abb6/FLAGea1534247 [2023-11-06 22:14:08,948 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9914ac24-dddc-40ee-bbaa-56a80d940682/bin/uautomizer-verify-WvqO1wxjHP/data/b5c46ea8a/f7c2a8db400444a0aa3e12128855abb6 [2023-11-06 22:14:08,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:14:08,957 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:14:08,960 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:14:08,961 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:14:08,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:14:08,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:08" (1/1) ... [2023-11-06 22:14:08,969 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f08e9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:08, skipping insertion in model container [2023-11-06 22:14:08,969 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:08" (1/1) ... [2023-11-06 22:14:09,037 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:14:09,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:14:09,639 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:14:09,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:14:09,779 WARN L672 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:14:09,787 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:14:09,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:09 WrapperNode [2023-11-06 22:14:09,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:14:09,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:14:09,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:14:09,790 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:14:09,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:09" (1/1) ... [2023-11-06 22:14:09,845 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:09" (1/1) ... [2023-11-06 22:14:09,878 INFO L138 Inliner]: procedures = 271, calls = 46, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 110 [2023-11-06 22:14:09,878 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:14:09,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:14:09,880 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:14:09,880 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:14:09,890 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:09" (1/1) ... [2023-11-06 22:14:09,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:09" (1/1) ... [2023-11-06 22:14:09,896 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:09" (1/1) ... [2023-11-06 22:14:09,897 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:09" (1/1) ... [2023-11-06 22:14:09,925 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:09" (1/1) ... [2023-11-06 22:14:09,930 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:09" (1/1) ... [2023-11-06 22:14:09,938 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:09" (1/1) ... [2023-11-06 22:14:09,941 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:09" (1/1) ... [2023-11-06 22:14:09,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:14:09,950 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:14:09,950 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:14:09,950 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:14:09,951 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:09" (1/1) ... [2023-11-06 22:14:09,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:14:09,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9914ac24-dddc-40ee-bbaa-56a80d940682/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:09,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9914ac24-dddc-40ee-bbaa-56a80d940682/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:14:10,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9914ac24-dddc-40ee-bbaa-56a80d940682/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:14:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-11-06 22:14:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:14:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure generate [2023-11-06 22:14:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure generate [2023-11-06 22:14:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:14:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:14:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:14:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:14:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure dispose [2023-11-06 22:14:10,039 INFO L138 BoogieDeclarations]: Found implementation of procedure dispose [2023-11-06 22:14:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure process [2023-11-06 22:14:10,039 INFO L138 BoogieDeclarations]: Found implementation of procedure process [2023-11-06 22:14:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:14:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:14:10,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:14:10,042 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 22:14:10,369 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:14:10,371 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:14:10,642 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:14:10,653 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:14:10,656 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:14:10,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:10 BoogieIcfgContainer [2023-11-06 22:14:10,661 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:14:10,663 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:14:10,664 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:14:10,667 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:14:10,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:14:08" (1/3) ... [2023-11-06 22:14:10,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7616320e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:10, skipping insertion in model container [2023-11-06 22:14:10,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:09" (2/3) ... [2023-11-06 22:14:10,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7616320e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:10, skipping insertion in model container [2023-11-06 22:14:10,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:10" (3/3) ... [2023-11-06 22:14:10,673 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_04-priv_multi_true.i [2023-11-06 22:14:10,694 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:14:10,695 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-06 22:14:10,695 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:14:10,798 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:14:10,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 175 transitions, 362 flow [2023-11-06 22:14:10,941 INFO L124 PetriNetUnfolderBase]: 14/172 cut-off events. [2023-11-06 22:14:10,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:14:10,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 172 events. 14/172 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 407 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-11-06 22:14:10,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 175 transitions, 362 flow [2023-11-06 22:14:10,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 172 transitions, 353 flow [2023-11-06 22:14:10,976 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:14:10,993 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 172 transitions, 353 flow [2023-11-06 22:14:10,998 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 172 transitions, 353 flow [2023-11-06 22:14:10,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 172 transitions, 353 flow [2023-11-06 22:14:11,086 INFO L124 PetriNetUnfolderBase]: 14/172 cut-off events. [2023-11-06 22:14:11,086 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:14:11,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 172 events. 14/172 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 408 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-11-06 22:14:11,104 INFO L119 LiptonReduction]: Number of co-enabled transitions 11610 [2023-11-06 22:14:17,061 INFO L134 LiptonReduction]: Checked pairs total: 26928 [2023-11-06 22:14:17,061 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-11-06 22:14:17,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:14:17,083 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;@1de9e73, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:14:17,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-06 22:14:17,085 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:14:17,086 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:14:17,086 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:14:17,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:17,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:14:17,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-06 22:14:17,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:17,092 INFO L85 PathProgramCache]: Analyzing trace with hash 685, now seen corresponding path program 1 times [2023-11-06 22:14:17,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:17,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093611928] [2023-11-06 22:14:17,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:17,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:17,343 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 22:14:17,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:17,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093611928] [2023-11-06 22:14:17,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093611928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:17,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:17,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:14:17,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272893976] [2023-11-06 22:14:17,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:17,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:14:17,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:17,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:14:17,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:14:17,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 343 [2023-11-06 22:14:17,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 121 flow. Second operand has 2 states, 2 states have (on average 160.5) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:17,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:17,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 343 [2023-11-06 22:14:17,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:19,047 INFO L124 PetriNetUnfolderBase]: 10225/14002 cut-off events. [2023-11-06 22:14:19,048 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-06 22:14:19,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27561 conditions, 14002 events. 10225/14002 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 69467 event pairs, 7641 based on Foata normal form. 0/10903 useless extension candidates. Maximal degree in co-relation 27550. Up to 13443 conditions per place. [2023-11-06 22:14:19,175 INFO L140 encePairwiseOnDemand]: 337/343 looper letters, 42 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-11-06 22:14:19,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 189 flow [2023-11-06 22:14:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:14:19,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:14:19,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 368 transitions. [2023-11-06 22:14:19,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364431486880467 [2023-11-06 22:14:19,191 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 368 transitions. [2023-11-06 22:14:19,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 368 transitions. [2023-11-06 22:14:19,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:19,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 368 transitions. [2023-11-06 22:14:19,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 184.0) internal successors, (368), 2 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 22:14:19,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 343.0) internal successors, (1029), 3 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states 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 22:14:19,207 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 343.0) internal successors, (1029), 3 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states 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 22:14:19,209 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 121 flow. Second operand 2 states and 368 transitions. [2023-11-06 22:14:19,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 189 flow [2023-11-06 22:14:19,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 186 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:14:19,216 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 102 flow [2023-11-06 22:14:19,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-11-06 22:14:19,222 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -8 predicate places. [2023-11-06 22:14:19,222 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 102 flow [2023-11-06 22:14:19,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 160.5) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:19,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:19,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:14:19,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:14:19,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-06 22:14:19,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:19,225 INFO L85 PathProgramCache]: Analyzing trace with hash 674967, now seen corresponding path program 1 times [2023-11-06 22:14:19,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:19,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861745453] [2023-11-06 22:14:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:19,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:19,588 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 22:14:19,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:19,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861745453] [2023-11-06 22:14:19,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861745453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:19,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:19,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:14:19,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844819549] [2023-11-06 22:14:19,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:19,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:19,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:19,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:19,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:19,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 343 [2023-11-06 22:14:19,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 22:14:19,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:19,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 343 [2023-11-06 22:14:19,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:21,171 INFO L124 PetriNetUnfolderBase]: 10220/13871 cut-off events. [2023-11-06 22:14:21,172 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:14:21,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27418 conditions, 13871 events. 10220/13871 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 68487 event pairs, 6117 based on Foata normal form. 0/10728 useless extension candidates. Maximal degree in co-relation 27415. Up to 10872 conditions per place. [2023-11-06 22:14:21,282 INFO L140 encePairwiseOnDemand]: 339/343 looper letters, 60 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-11-06 22:14:21,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 270 flow [2023-11-06 22:14:21,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:21,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:14:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-11-06 22:14:21,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024295432458697 [2023-11-06 22:14:21,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-11-06 22:14:21,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-11-06 22:14:21,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:21,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-11-06 22:14:21,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states 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 22:14:21,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 22:14:21,302 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 22:14:21,303 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 102 flow. Second operand 3 states and 517 transitions. [2023-11-06 22:14:21,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 270 flow [2023-11-06 22:14:21,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:14:21,310 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 106 flow [2023-11-06 22:14:21,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-11-06 22:14:21,312 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2023-11-06 22:14:21,313 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 106 flow [2023-11-06 22:14:21,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 22:14:21,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:21,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:14:21,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:14:21,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-06 22:14:21,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:21,325 INFO L85 PathProgramCache]: Analyzing trace with hash 674968, now seen corresponding path program 1 times [2023-11-06 22:14:21,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:21,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602644426] [2023-11-06 22:14:21,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:21,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:21,526 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 22:14:21,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:21,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602644426] [2023-11-06 22:14:21,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602644426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:21,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:21,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:14:21,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58740416] [2023-11-06 22:14:21,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:21,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:21,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:21,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:21,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:21,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 343 [2023-11-06 22:14:21,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states 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 22:14:21,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:21,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 343 [2023-11-06 22:14:21,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:23,067 INFO L124 PetriNetUnfolderBase]: 10215/13860 cut-off events. [2023-11-06 22:14:23,067 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-11-06 22:14:23,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27999 conditions, 13860 events. 10215/13860 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 68501 event pairs, 6113 based on Foata normal form. 0/11023 useless extension candidates. Maximal degree in co-relation 27995. Up to 10862 conditions per place. [2023-11-06 22:14:23,182 INFO L140 encePairwiseOnDemand]: 339/343 looper letters, 59 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-11-06 22:14:23,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 272 flow [2023-11-06 22:14:23,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:23,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:14:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 528 transitions. [2023-11-06 22:14:23,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2023-11-06 22:14:23,186 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 528 transitions. [2023-11-06 22:14:23,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 528 transitions. [2023-11-06 22:14:23,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:23,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 528 transitions. [2023-11-06 22:14:23,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states 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 22:14:23,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 22:14:23,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 22:14:23,195 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 106 flow. Second operand 3 states and 528 transitions. [2023-11-06 22:14:23,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 272 flow [2023-11-06 22:14:23,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:14:23,207 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 104 flow [2023-11-06 22:14:23,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-06 22:14:23,209 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -8 predicate places. [2023-11-06 22:14:23,213 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 104 flow [2023-11-06 22:14:23,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states 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 22:14:23,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:23,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:14:23,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:14:23,215 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-06 22:14:23,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:23,216 INFO L85 PathProgramCache]: Analyzing trace with hash 648657989, now seen corresponding path program 1 times [2023-11-06 22:14:23,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:23,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573307784] [2023-11-06 22:14:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:23,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:23,498 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 22:14:23,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:23,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573307784] [2023-11-06 22:14:23,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573307784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:23,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:23,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:14:23,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179861995] [2023-11-06 22:14:23,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:23,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:23,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:23,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:23,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:23,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 343 [2023-11-06 22:14:23,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states 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 22:14:23,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:23,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 343 [2023-11-06 22:14:23,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:24,705 INFO L124 PetriNetUnfolderBase]: 10114/13694 cut-off events. [2023-11-06 22:14:24,706 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-11-06 22:14:24,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27682 conditions, 13694 events. 10114/13694 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 67260 event pairs, 6032 based on Foata normal form. 0/10924 useless extension candidates. Maximal degree in co-relation 27678. Up to 10711 conditions per place. [2023-11-06 22:14:24,811 INFO L140 encePairwiseOnDemand]: 339/343 looper letters, 58 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2023-11-06 22:14:24,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 268 flow [2023-11-06 22:14:24,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:24,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:14:24,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2023-11-06 22:14:24,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121477162293488 [2023-11-06 22:14:24,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2023-11-06 22:14:24,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2023-11-06 22:14:24,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:24,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2023-11-06 22:14:24,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states 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 22:14:24,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 22:14:24,822 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 22:14:24,823 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 104 flow. Second operand 3 states and 527 transitions. [2023-11-06 22:14:24,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 268 flow [2023-11-06 22:14:24,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:14:24,830 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 102 flow [2023-11-06 22:14:24,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-11-06 22:14:24,834 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -9 predicate places. [2023-11-06 22:14:24,834 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 102 flow [2023-11-06 22:14:24,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states 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 22:14:24,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:24,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:14:24,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:14:24,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-06 22:14:24,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:24,837 INFO L85 PathProgramCache]: Analyzing trace with hash 648657988, now seen corresponding path program 1 times [2023-11-06 22:14:24,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:24,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778465520] [2023-11-06 22:14:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:24,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:24,956 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 22:14:24,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:24,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778465520] [2023-11-06 22:14:24,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778465520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:24,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:24,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:14:24,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045749064] [2023-11-06 22:14:24,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:24,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:24,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:24,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:24,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:25,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 343 [2023-11-06 22:14:25,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states 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 22:14:25,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:25,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 343 [2023-11-06 22:14:25,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:26,291 INFO L124 PetriNetUnfolderBase]: 10013/13528 cut-off events. [2023-11-06 22:14:26,291 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-11-06 22:14:26,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27365 conditions, 13528 events. 10013/13528 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 66177 event pairs, 5951 based on Foata normal form. 0/10825 useless extension candidates. Maximal degree in co-relation 27361. Up to 10560 conditions per place. [2023-11-06 22:14:26,391 INFO L140 encePairwiseOnDemand]: 339/343 looper letters, 57 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-11-06 22:14:26,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 264 flow [2023-11-06 22:14:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:26,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:14:26,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 514 transitions. [2023-11-06 22:14:26,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49951409135082603 [2023-11-06 22:14:26,395 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 514 transitions. [2023-11-06 22:14:26,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 514 transitions. [2023-11-06 22:14:26,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:26,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 514 transitions. [2023-11-06 22:14:26,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states 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 22:14:26,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 22:14:26,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 22:14:26,403 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 102 flow. Second operand 3 states and 514 transitions. [2023-11-06 22:14:26,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 264 flow [2023-11-06 22:14:26,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 66 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:14:26,410 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 100 flow [2023-11-06 22:14:26,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-11-06 22:14:26,412 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -10 predicate places. [2023-11-06 22:14:26,412 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 100 flow [2023-11-06 22:14:26,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states 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 22:14:26,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:26,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:26,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:14:26,414 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-06 22:14:26,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:26,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1112803721, now seen corresponding path program 1 times [2023-11-06 22:14:26,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:26,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892578617] [2023-11-06 22:14:26,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:26,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:26,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:26,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:26,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892578617] [2023-11-06 22:14:26,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892578617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:26,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:26,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:14:26,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248652522] [2023-11-06 22:14:26,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:26,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:26,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:26,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:26,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:26,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 343 [2023-11-06 22:14:26,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states 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 22:14:26,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:26,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 343 [2023-11-06 22:14:26,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:28,438 INFO L124 PetriNetUnfolderBase]: 16873/22278 cut-off events. [2023-11-06 22:14:28,438 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-11-06 22:14:28,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45075 conditions, 22278 events. 16873/22278 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 110869 event pairs, 7471 based on Foata normal form. 300/18230 useless extension candidates. Maximal degree in co-relation 45071. Up to 13121 conditions per place. [2023-11-06 22:14:28,585 INFO L140 encePairwiseOnDemand]: 339/343 looper letters, 65 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-11-06 22:14:28,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 73 transitions, 292 flow [2023-11-06 22:14:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:28,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:14:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-11-06 22:14:28,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160349854227405 [2023-11-06 22:14:28,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-11-06 22:14:28,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-11-06 22:14:28,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:28,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-11-06 22:14:28,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states 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 22:14:28,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 22:14:28,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 22:14:28,596 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 100 flow. Second operand 3 states and 531 transitions. [2023-11-06 22:14:28,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 73 transitions, 292 flow [2023-11-06 22:14:28,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 73 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:14:28,652 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 108 flow [2023-11-06 22:14:28,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-11-06 22:14:28,654 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -9 predicate places. [2023-11-06 22:14:28,654 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 108 flow [2023-11-06 22:14:28,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states 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 22:14:28,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:28,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:28,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:14:28,655 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-06 22:14:28,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:28,656 INFO L85 PathProgramCache]: Analyzing trace with hash -42603552, now seen corresponding path program 1 times [2023-11-06 22:14:28,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:28,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798938612] [2023-11-06 22:14:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:28,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:28,844 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 22:14:28,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:28,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798938612] [2023-11-06 22:14:28,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798938612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:28,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:28,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:14:28,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958643707] [2023-11-06 22:14:28,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:28,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:28,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:28,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:28,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:28,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 343 [2023-11-06 22:14:28,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states 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 22:14:28,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:28,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 343 [2023-11-06 22:14:28,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:31,707 INFO L124 PetriNetUnfolderBase]: 38093/50702 cut-off events. [2023-11-06 22:14:31,710 INFO L125 PetriNetUnfolderBase]: For 2756/2756 co-relation queries the response was YES. [2023-11-06 22:14:31,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105215 conditions, 50702 events. 38093/50702 cut-off events. For 2756/2756 co-relation queries the response was YES. Maximal size of possible extension queue 1219. Compared 282685 event pairs, 10820 based on Foata normal form. 0/42083 useless extension candidates. Maximal degree in co-relation 105210. Up to 30016 conditions per place. [2023-11-06 22:14:32,027 INFO L140 encePairwiseOnDemand]: 334/343 looper letters, 71 selfloop transitions, 8 changer transitions 0/83 dead transitions. [2023-11-06 22:14:32,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 83 transitions, 358 flow [2023-11-06 22:14:32,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:14:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 534 transitions. [2023-11-06 22:14:32,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189504373177842 [2023-11-06 22:14:32,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 534 transitions. [2023-11-06 22:14:32,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 534 transitions. [2023-11-06 22:14:32,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:32,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 534 transitions. [2023-11-06 22:14:32,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:32,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 22:14:32,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 22:14:32,037 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 108 flow. Second operand 3 states and 534 transitions. [2023-11-06 22:14:32,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 83 transitions, 358 flow [2023-11-06 22:14:32,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 83 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:14:32,046 INFO L231 Difference]: Finished difference. Result has 52 places, 52 transitions, 168 flow [2023-11-06 22:14:32,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=52, PETRI_TRANSITIONS=52} [2023-11-06 22:14:32,047 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -6 predicate places. [2023-11-06 22:14:32,047 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 52 transitions, 168 flow [2023-11-06 22:14:32,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states 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 22:14:32,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:32,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:32,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:14:32,049 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting disposeErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-06 22:14:32,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:32,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1386240654, now seen corresponding path program 1 times [2023-11-06 22:14:32,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:32,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335461616] [2023-11-06 22:14:32,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:32,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:32,228 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 22:14:32,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:32,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335461616] [2023-11-06 22:14:32,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335461616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:32,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:32,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:14:32,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858788626] [2023-11-06 22:14:32,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:32,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:14:32,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:32,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:14:32,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:14:32,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 343 [2023-11-06 22:14:32,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 52 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states 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 22:14:32,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:32,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 343 [2023-11-06 22:14:32,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:41,746 INFO L124 PetriNetUnfolderBase]: 87501/118744 cut-off events. [2023-11-06 22:14:41,747 INFO L125 PetriNetUnfolderBase]: For 31242/31341 co-relation queries the response was YES. [2023-11-06 22:14:42,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272683 conditions, 118744 events. 87501/118744 cut-off events. For 31242/31341 co-relation queries the response was YES. Maximal size of possible extension queue 2115. Compared 727615 event pairs, 20621 based on Foata normal form. 1/102418 useless extension candidates. Maximal degree in co-relation 272677. Up to 46870 conditions per place. [2023-11-06 22:14:42,494 INFO L140 encePairwiseOnDemand]: 337/343 looper letters, 134 selfloop transitions, 8 changer transitions 0/149 dead transitions. [2023-11-06 22:14:42,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 149 transitions, 750 flow [2023-11-06 22:14:42,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:14:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:14:42,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 896 transitions. [2023-11-06 22:14:42,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2023-11-06 22:14:42,501 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 896 transitions. [2023-11-06 22:14:42,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 896 transitions. [2023-11-06 22:14:42,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:42,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 896 transitions. [2023-11-06 22:14:42,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.2) internal successors, (896), 5 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 22:14:42,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 343.0) internal successors, (2058), 6 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states 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 22:14:42,511 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 343.0) internal successors, (2058), 6 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states 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 22:14:42,512 INFO L175 Difference]: Start difference. First operand has 52 places, 52 transitions, 168 flow. Second operand 5 states and 896 transitions. [2023-11-06 22:14:42,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 149 transitions, 750 flow [2023-11-06 22:14:42,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 149 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:14:42,594 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 228 flow [2023-11-06 22:14:42,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2023-11-06 22:14:42,595 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 0 predicate places. [2023-11-06 22:14:42,595 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 228 flow [2023-11-06 22:14:42,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states 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 22:14:42,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:42,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:42,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:14:42,597 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-06 22:14:42,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:42,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2022995406, now seen corresponding path program 1 times [2023-11-06 22:14:42,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:42,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013549909] [2023-11-06 22:14:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:42,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:42,712 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 22:14:42,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:42,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013549909] [2023-11-06 22:14:42,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013549909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:42,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:42,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:14:42,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465431845] [2023-11-06 22:14:42,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:42,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:42,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:42,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:42,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:42,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 343 [2023-11-06 22:14:42,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states 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 22:14:42,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:42,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 343 [2023-11-06 22:14:42,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:53,661 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([507] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][75], [37#L1210true, Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), generateThread1of1ForFork1InUse, disposeThread1of1ForFork2InUse, Black: 198#true, 108#L1173true, 215#true, processThread1of1ForFork0InUse, 174#true, Black: 206#(= 5 ~B~0), 15#L1161true, Black: 204#true, Black: 209#(and (= 5 |disposeThread1of1ForFork2_~p~0#1|) (= 5 ~B~0)), 123#L1190true, 207#(= 5 |disposeThread1of1ForFork2_~p~0#1|)]) [2023-11-06 22:14:53,661 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2023-11-06 22:14:53,661 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-11-06 22:14:53,661 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-11-06 22:14:53,661 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-11-06 22:14:53,662 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([507] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][68], [Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), generateThread1of1ForFork1InUse, disposeThread1of1ForFork2InUse, Black: 198#true, 108#L1173true, processThread1of1ForFork0InUse, 174#true, 217#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1), Black: 206#(= 5 ~B~0), 74#L19-5true, 15#L1161true, Black: 204#true, Black: 209#(and (= 5 |disposeThread1of1ForFork2_~p~0#1|) (= 5 ~B~0)), 123#L1190true, 207#(= 5 |disposeThread1of1ForFork2_~p~0#1|)]) [2023-11-06 22:14:53,662 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2023-11-06 22:14:53,662 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-11-06 22:14:53,662 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-11-06 22:14:53,662 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-11-06 22:14:55,188 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([507] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][75], [Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), generateThread1of1ForFork1InUse, disposeThread1of1ForFork2InUse, 108#L1173true, Black: 198#true, 215#true, processThread1of1ForFork0InUse, 174#true, 17#L1205-6true, Black: 206#(= 5 ~B~0), 15#L1161true, Black: 204#true, Black: 209#(and (= 5 |disposeThread1of1ForFork2_~p~0#1|) (= 5 ~B~0)), 123#L1190true, 207#(= 5 |disposeThread1of1ForFork2_~p~0#1|)]) [2023-11-06 22:14:55,189 INFO L294 olderBase$Statistics]: this new event has 40 ancestors and is cut-off event [2023-11-06 22:14:55,189 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-11-06 22:14:55,189 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-11-06 22:14:55,189 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-11-06 22:14:55,619 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([507] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][68], [Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), generateThread1of1ForFork1InUse, disposeThread1of1ForFork2InUse, 91#L1206-1true, 108#L1173true, Black: 198#true, processThread1of1ForFork0InUse, 174#true, 217#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1), Black: 206#(= 5 ~B~0), 15#L1161true, Black: 204#true, Black: 209#(and (= 5 |disposeThread1of1ForFork2_~p~0#1|) (= 5 ~B~0)), 123#L1190true, 207#(= 5 |disposeThread1of1ForFork2_~p~0#1|)]) [2023-11-06 22:14:55,620 INFO L294 olderBase$Statistics]: this new event has 41 ancestors and is cut-off event [2023-11-06 22:14:55,620 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-11-06 22:14:55,620 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-11-06 22:14:55,620 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-11-06 22:14:55,621 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([507] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][75], [Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), 2#ULTIMATE.startEXITtrue, generateThread1of1ForFork1InUse, disposeThread1of1ForFork2InUse, 108#L1173true, Black: 198#true, 215#true, processThread1of1ForFork0InUse, 174#true, Black: 206#(= 5 ~B~0), 15#L1161true, Black: 204#true, Black: 209#(and (= 5 |disposeThread1of1ForFork2_~p~0#1|) (= 5 ~B~0)), 123#L1190true, 207#(= 5 |disposeThread1of1ForFork2_~p~0#1|)]) [2023-11-06 22:14:55,621 INFO L294 olderBase$Statistics]: this new event has 41 ancestors and is cut-off event [2023-11-06 22:14:55,621 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-11-06 22:14:55,621 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-11-06 22:14:55,621 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-11-06 22:14:55,622 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([507] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][75], [Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), generateThread1of1ForFork1InUse, disposeThread1of1ForFork2InUse, Black: 198#true, 108#L1173true, processThread1of1ForFork0InUse, 215#true, 174#true, Black: 206#(= 5 ~B~0), 15#L1161true, Black: 204#true, Black: 209#(and (= 5 |disposeThread1of1ForFork2_~p~0#1|) (= 5 ~B~0)), 123#L1190true, 31#ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAKtrue, 207#(= 5 |disposeThread1of1ForFork2_~p~0#1|)]) [2023-11-06 22:14:55,622 INFO L294 olderBase$Statistics]: this new event has 41 ancestors and is cut-off event [2023-11-06 22:14:55,622 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-11-06 22:14:55,622 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-11-06 22:14:55,622 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-11-06 22:14:56,363 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([507] L1171-1-->L1173: Formula: (= v_~B~0_9 v_~A~0_12) InVars {~A~0=v_~A~0_12} OutVars{processThread1of1ForFork0_#t~nondet6=|v_processThread1of1ForFork0_#t~nondet6_7|, ~A~0=v_~A~0_12, ~B~0=v_~B~0_9} AuxVars[] AssignedVars[processThread1of1ForFork0_#t~nondet6, ~B~0][68], [Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), generateThread1of1ForFork1InUse, disposeThread1of1ForFork2InUse, Black: 198#true, 108#L1173true, processThread1of1ForFork0InUse, 174#true, 217#(= (select (select |#pthreadsMutex| |~#mutex_A~0.base|) |~#mutex_A~0.offset|) 1), 112#L1208true, Black: 206#(= 5 ~B~0), 15#L1161true, Black: 204#true, Black: 209#(and (= 5 |disposeThread1of1ForFork2_~p~0#1|) (= 5 ~B~0)), 123#L1190true, 207#(= 5 |disposeThread1of1ForFork2_~p~0#1|)]) [2023-11-06 22:14:56,363 INFO L294 olderBase$Statistics]: this new event has 42 ancestors and is cut-off event [2023-11-06 22:14:56,363 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-11-06 22:14:56,363 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-11-06 22:14:56,363 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-11-06 22:14:58,078 INFO L124 PetriNetUnfolderBase]: 128335/177677 cut-off events. [2023-11-06 22:14:58,079 INFO L125 PetriNetUnfolderBase]: For 92041/96764 co-relation queries the response was YES. [2023-11-06 22:14:58,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444672 conditions, 177677 events. 128335/177677 cut-off events. For 92041/96764 co-relation queries the response was YES. Maximal size of possible extension queue 4142. Compared 1236377 event pairs, 31136 based on Foata normal form. 5340/164416 useless extension candidates. Maximal degree in co-relation 444663. Up to 108173 conditions per place. [2023-11-06 22:14:59,240 INFO L140 encePairwiseOnDemand]: 331/343 looper letters, 80 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2023-11-06 22:14:59,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 103 transitions, 584 flow [2023-11-06 22:14:59,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:59,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:14:59,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-11-06 22:14:59,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034013605442177 [2023-11-06 22:14:59,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-11-06 22:14:59,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-11-06 22:14:59,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:59,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-11-06 22:14:59,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 22:14:59,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 22:14:59,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 22:14:59,247 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 228 flow. Second operand 3 states and 518 transitions. [2023-11-06 22:14:59,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 103 transitions, 584 flow [2023-11-06 22:14:59,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 103 transitions, 584 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:14:59,280 INFO L231 Difference]: Finished difference. Result has 61 places, 69 transitions, 317 flow [2023-11-06 22:14:59,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=61, PETRI_TRANSITIONS=69} [2023-11-06 22:14:59,282 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2023-11-06 22:14:59,282 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 69 transitions, 317 flow [2023-11-06 22:14:59,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states 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 22:14:59,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:59,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:59,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:14:59,283 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-06 22:14:59,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:59,283 INFO L85 PathProgramCache]: Analyzing trace with hash 913158965, now seen corresponding path program 1 times [2023-11-06 22:14:59,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:59,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899129003] [2023-11-06 22:14:59,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:59,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:59,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:59,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899129003] [2023-11-06 22:14:59,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899129003] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:14:59,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64296490] [2023-11-06 22:14:59,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:59,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:59,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9914ac24-dddc-40ee-bbaa-56a80d940682/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:59,658 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9914ac24-dddc-40ee-bbaa-56a80d940682/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:14:59,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9914ac24-dddc-40ee-bbaa-56a80d940682/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:14:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:59,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:14:59,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:59,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:14:59,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:59,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64296490] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:14:59,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:14:59,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:14:59,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479226391] [2023-11-06 22:14:59,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:14:59,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:14:59,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:59,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:14:59,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:14:59,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 343 [2023-11-06 22:14:59,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 69 transitions, 317 flow. Second operand has 7 states, 7 states have (on average 157.14285714285714) internal successors, (1100), 7 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states 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 22:14:59,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:59,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 343 [2023-11-06 22:14:59,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand