./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/fibonacci.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:39:19,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:39:19,542 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 06:39:19,546 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:39:19,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:39:19,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:39:19,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:39:19,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:39:19,572 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:39:19,572 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:39:19,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:39:19,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:39:19,574 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:39:19,575 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:39:19,575 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:39:19,576 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:39:19,576 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:39:19,577 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:39:19,577 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:39:19,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:39:19,578 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 06:39:19,579 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 06:39:19,579 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 06:39:19,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:39:19,580 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 06:39:19,580 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:39:19,581 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:39:19,581 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:39:19,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:39:19,582 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:39:19,582 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:39:19,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:39:19,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:39:19,583 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:39:19,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:39:19,584 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:39:19,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:39:19,584 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:39:19,584 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:39:19,585 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:39:19,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:39:19,585 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2023-11-29 06:39:19,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:39:19,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:39:19,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:39:19,827 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:39:19,828 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:39:19,829 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/fibonacci.wvr.c [2023-11-29 06:39:20,339 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:39:24,859 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:39:24,860 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/sv-benchmarks/c/weaver/fibonacci.wvr.c [2023-11-29 06:39:24,866 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/data/abcad2c0d/14af5f7ff21a4c6fa547e1089569f7e6/FLAG36676bd03 [2023-11-29 06:39:24,879 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/data/abcad2c0d/14af5f7ff21a4c6fa547e1089569f7e6 [2023-11-29 06:39:24,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:39:24,884 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:39:24,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:39:24,885 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:39:24,891 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:39:24,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:39:24" (1/1) ... [2023-11-29 06:39:24,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2c099d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:24, skipping insertion in model container [2023-11-29 06:39:24,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:39:24" (1/1) ... [2023-11-29 06:39:24,918 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:39:25,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:39:25,116 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:39:25,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:39:25,161 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:39:25,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:25 WrapperNode [2023-11-29 06:39:25,161 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:39:25,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:39:25,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:39:25,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:39:25,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:25" (1/1) ... [2023-11-29 06:39:25,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:25" (1/1) ... [2023-11-29 06:39:25,207 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 174 [2023-11-29 06:39:25,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:39:25,208 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:39:25,208 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:39:25,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:39:25,220 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:25" (1/1) ... [2023-11-29 06:39:25,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:25" (1/1) ... [2023-11-29 06:39:25,223 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:25" (1/1) ... [2023-11-29 06:39:25,240 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 06:39:25,241 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:25" (1/1) ... [2023-11-29 06:39:25,241 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:25" (1/1) ... [2023-11-29 06:39:25,249 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:25" (1/1) ... [2023-11-29 06:39:25,253 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:25" (1/1) ... [2023-11-29 06:39:25,255 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:25" (1/1) ... [2023-11-29 06:39:25,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:25" (1/1) ... [2023-11-29 06:39:25,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:39:25,262 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:39:25,262 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:39:25,262 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:39:25,263 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:25" (1/1) ... [2023-11-29 06:39:25,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:39:25,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:25,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:39:25,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:39:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:39:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 06:39:25,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 06:39:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 06:39:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 06:39:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:39:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:39:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:39:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:39:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:39:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:39:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:39:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:39:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:39:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:39:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:39:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 06:39:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:39:25,333 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 06:39:25,434 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:39:25,435 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:39:25,743 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:39:26,006 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:39:26,007 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 06:39:26,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:39:26 BoogieIcfgContainer [2023-11-29 06:39:26,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:39:26,010 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:39:26,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:39:26,013 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:39:26,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:39:24" (1/3) ... [2023-11-29 06:39:26,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2a70c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:39:26, skipping insertion in model container [2023-11-29 06:39:26,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:39:25" (2/3) ... [2023-11-29 06:39:26,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2a70c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:39:26, skipping insertion in model container [2023-11-29 06:39:26,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:39:26" (3/3) ... [2023-11-29 06:39:26,016 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2023-11-29 06:39:26,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:39:26,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-29 06:39:26,036 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:39:26,082 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 06:39:26,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 80 flow [2023-11-29 06:39:26,146 INFO L124 PetriNetUnfolderBase]: 2/31 cut-off events. [2023-11-29 06:39:26,147 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 06:39:26,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 31 events. 2/31 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2023-11-29 06:39:26,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 80 flow [2023-11-29 06:39:26,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 72 flow [2023-11-29 06:39:26,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:39:26,171 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;@3f51171f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:39:26,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-29 06:39:26,175 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:39:26,175 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 06:39:26,175 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:39:26,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:26,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 06:39:26,177 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:26,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:26,195 INFO L85 PathProgramCache]: Analyzing trace with hash 18288, now seen corresponding path program 1 times [2023-11-29 06:39:26,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:26,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999359184] [2023-11-29 06:39:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:26,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:26,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:26,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:26,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999359184] [2023-11-29 06:39:26,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999359184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:26,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:26,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:39:26,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788516829] [2023-11-29 06:39:26,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:26,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:39:26,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:26,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:39:26,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:26,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2023-11-29 06:39:26,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:26,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:26,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2023-11-29 06:39:26,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:26,672 INFO L124 PetriNetUnfolderBase]: 55/121 cut-off events. [2023-11-29 06:39:26,673 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 06:39:26,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 121 events. 55/121 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 304 event pairs, 34 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 186. Up to 95 conditions per place. [2023-11-29 06:39:26,676 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 15 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-11-29 06:39:26,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 96 flow [2023-11-29 06:39:26,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:39:26,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:39:26,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2023-11-29 06:39:26,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5858585858585859 [2023-11-29 06:39:26,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 58 transitions. [2023-11-29 06:39:26,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 58 transitions. [2023-11-29 06:39:26,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:26,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 58 transitions. [2023-11-29 06:39:26,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:26,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:26,698 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:26,700 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 72 flow. Second operand 3 states and 58 transitions. [2023-11-29 06:39:26,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 96 flow [2023-11-29 06:39:26,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 06:39:26,706 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 58 flow [2023-11-29 06:39:26,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2023-11-29 06:39:26,711 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -6 predicate places. [2023-11-29 06:39:26,711 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 58 flow [2023-11-29 06:39:26,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:26,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:26,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 06:39:26,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:39:26,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:26,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:26,713 INFO L85 PathProgramCache]: Analyzing trace with hash 18289, now seen corresponding path program 1 times [2023-11-29 06:39:26,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:26,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397247891] [2023-11-29 06:39:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:26,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:26,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:26,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397247891] [2023-11-29 06:39:26,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397247891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:26,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:26,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:39:26,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328864642] [2023-11-29 06:39:26,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:26,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:39:26,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:26,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:39:26,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:26,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2023-11-29 06:39:26,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:26,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:26,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2023-11-29 06:39:26,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:26,879 INFO L124 PetriNetUnfolderBase]: 37/89 cut-off events. [2023-11-29 06:39:26,879 INFO L125 PetriNetUnfolderBase]: For 4/5 co-relation queries the response was YES. [2023-11-29 06:39:26,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 89 events. 37/89 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 206 event pairs, 22 based on Foata normal form. 10/74 useless extension candidates. Maximal degree in co-relation 158. Up to 67 conditions per place. [2023-11-29 06:39:26,881 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 13 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-29 06:39:26,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 24 transitions, 82 flow [2023-11-29 06:39:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:39:26,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:39:26,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2023-11-29 06:39:26,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-29 06:39:26,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 61 transitions. [2023-11-29 06:39:26,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 61 transitions. [2023-11-29 06:39:26,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:26,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 61 transitions. [2023-11-29 06:39:26,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:26,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:26,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:26,885 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 58 flow. Second operand 3 states and 61 transitions. [2023-11-29 06:39:26,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 24 transitions, 82 flow [2023-11-29 06:39:26,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:39:26,887 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 55 flow [2023-11-29 06:39:26,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2023-11-29 06:39:26,888 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -7 predicate places. [2023-11-29 06:39:26,888 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 55 flow [2023-11-29 06:39:26,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:26,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:26,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 06:39:26,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:39:26,889 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:26,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:26,890 INFO L85 PathProgramCache]: Analyzing trace with hash 545337015, now seen corresponding path program 1 times [2023-11-29 06:39:26,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:26,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83926017] [2023-11-29 06:39:26,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:26,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:26,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:26,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83926017] [2023-11-29 06:39:26,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83926017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:26,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:26,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:39:26,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492354195] [2023-11-29 06:39:26,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:26,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:39:26,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:26,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:39:26,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:26,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2023-11-29 06:39:27,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:27,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:27,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2023-11-29 06:39:27,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:27,066 INFO L124 PetriNetUnfolderBase]: 43/93 cut-off events. [2023-11-29 06:39:27,067 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 06:39:27,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 93 events. 43/93 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 189 event pairs, 26 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 174. Up to 79 conditions per place. [2023-11-29 06:39:27,068 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 15 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-11-29 06:39:27,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 83 flow [2023-11-29 06:39:27,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:39:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:39:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2023-11-29 06:39:27,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2023-11-29 06:39:27,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 57 transitions. [2023-11-29 06:39:27,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 57 transitions. [2023-11-29 06:39:27,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:27,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 57 transitions. [2023-11-29 06:39:27,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:27,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:27,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:27,073 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 55 flow. Second operand 3 states and 57 transitions. [2023-11-29 06:39:27,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 83 flow [2023-11-29 06:39:27,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 22 transitions, 82 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:39:27,075 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 52 flow [2023-11-29 06:39:27,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=27, PETRI_TRANSITIONS=22} [2023-11-29 06:39:27,076 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-11-29 06:39:27,076 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 52 flow [2023-11-29 06:39:27,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:27,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:27,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 06:39:27,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:39:27,077 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:27,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:27,078 INFO L85 PathProgramCache]: Analyzing trace with hash 545337016, now seen corresponding path program 1 times [2023-11-29 06:39:27,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:27,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139131054] [2023-11-29 06:39:27,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:27,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:27,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:27,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139131054] [2023-11-29 06:39:27,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139131054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:27,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:27,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:39:27,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038740836] [2023-11-29 06:39:27,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:27,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:39:27,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:27,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:39:27,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:27,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2023-11-29 06:39:27,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:27,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:27,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2023-11-29 06:39:27,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:27,225 INFO L124 PetriNetUnfolderBase]: 37/81 cut-off events. [2023-11-29 06:39:27,225 INFO L125 PetriNetUnfolderBase]: For 4/5 co-relation queries the response was YES. [2023-11-29 06:39:27,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 81 events. 37/81 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 162 event pairs, 22 based on Foata normal form. 5/69 useless extension candidates. Maximal degree in co-relation 150. Up to 67 conditions per place. [2023-11-29 06:39:27,226 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 13 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-11-29 06:39:27,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 20 transitions, 76 flow [2023-11-29 06:39:27,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:39:27,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:39:27,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2023-11-29 06:39:27,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-29 06:39:27,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 61 transitions. [2023-11-29 06:39:27,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 61 transitions. [2023-11-29 06:39:27,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:27,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 61 transitions. [2023-11-29 06:39:27,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:27,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:27,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:27,231 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 52 flow. Second operand 3 states and 61 transitions. [2023-11-29 06:39:27,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 20 transitions, 76 flow [2023-11-29 06:39:27,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:39:27,232 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 49 flow [2023-11-29 06:39:27,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2023-11-29 06:39:27,234 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -9 predicate places. [2023-11-29 06:39:27,234 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 49 flow [2023-11-29 06:39:27,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:27,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:27,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:27,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:39:27,235 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:27,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:27,236 INFO L85 PathProgramCache]: Analyzing trace with hash 571925971, now seen corresponding path program 1 times [2023-11-29 06:39:27,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:27,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623418229] [2023-11-29 06:39:27,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:27,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:27,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:27,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623418229] [2023-11-29 06:39:27,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623418229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:27,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:27,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:39:27,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205603145] [2023-11-29 06:39:27,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:27,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:39:27,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:27,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:39:27,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:39:27,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:27,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 49 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:27,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:27,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:27,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:27,689 INFO L124 PetriNetUnfolderBase]: 67/143 cut-off events. [2023-11-29 06:39:27,690 INFO L125 PetriNetUnfolderBase]: For 8/19 co-relation queries the response was YES. [2023-11-29 06:39:27,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 143 events. 67/143 cut-off events. For 8/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 445 event pairs, 11 based on Foata normal form. 6/119 useless extension candidates. Maximal degree in co-relation 273. Up to 72 conditions per place. [2023-11-29 06:39:27,692 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 26 selfloop transitions, 5 changer transitions 4/41 dead transitions. [2023-11-29 06:39:27,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 41 transitions, 167 flow [2023-11-29 06:39:27,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:39:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:39:27,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2023-11-29 06:39:27,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2023-11-29 06:39:27,694 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 121 transitions. [2023-11-29 06:39:27,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 121 transitions. [2023-11-29 06:39:27,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:27,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 121 transitions. [2023-11-29 06:39:27,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:27,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:27,697 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:27,697 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 49 flow. Second operand 5 states and 121 transitions. [2023-11-29 06:39:27,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 41 transitions, 167 flow [2023-11-29 06:39:27,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 41 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:39:27,699 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 82 flow [2023-11-29 06:39:27,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-11-29 06:39:27,700 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2023-11-29 06:39:27,701 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 82 flow [2023-11-29 06:39:27,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:27,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:27,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:27,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:39:27,702 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:27,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:27,702 INFO L85 PathProgramCache]: Analyzing trace with hash 680146351, now seen corresponding path program 2 times [2023-11-29 06:39:27,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:27,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083105524] [2023-11-29 06:39:27,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:27,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:27,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:27,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083105524] [2023-11-29 06:39:27,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083105524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:27,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:27,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:39:27,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105837706] [2023-11-29 06:39:27,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:27,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:39:27,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:27,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:39:27,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:39:27,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:27,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:27,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:27,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:27,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:28,082 INFO L124 PetriNetUnfolderBase]: 65/137 cut-off events. [2023-11-29 06:39:28,082 INFO L125 PetriNetUnfolderBase]: For 41/43 co-relation queries the response was YES. [2023-11-29 06:39:28,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 137 events. 65/137 cut-off events. For 41/43 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 388 event pairs, 14 based on Foata normal form. 2/130 useless extension candidates. Maximal degree in co-relation 344. Up to 72 conditions per place. [2023-11-29 06:39:28,085 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 22 selfloop transitions, 6 changer transitions 4/38 dead transitions. [2023-11-29 06:39:28,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 187 flow [2023-11-29 06:39:28,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:39:28,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:39:28,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2023-11-29 06:39:28,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7090909090909091 [2023-11-29 06:39:28,087 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 117 transitions. [2023-11-29 06:39:28,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 117 transitions. [2023-11-29 06:39:28,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:28,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 117 transitions. [2023-11-29 06:39:28,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,089 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,089 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 82 flow. Second operand 5 states and 117 transitions. [2023-11-29 06:39:28,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 187 flow [2023-11-29 06:39:28,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 185 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 06:39:28,091 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 114 flow [2023-11-29 06:39:28,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2023-11-29 06:39:28,092 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-11-29 06:39:28,093 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 114 flow [2023-11-29 06:39:28,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:28,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:28,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:39:28,094 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:28,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:28,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2008244377, now seen corresponding path program 1 times [2023-11-29 06:39:28,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:28,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65830737] [2023-11-29 06:39:28,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:28,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:28,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:28,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65830737] [2023-11-29 06:39:28,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65830737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:28,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:28,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:39:28,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032933464] [2023-11-29 06:39:28,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:28,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:39:28,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:28,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:39:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:39:28,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:28,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:28,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:28,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:28,282 INFO L124 PetriNetUnfolderBase]: 77/163 cut-off events. [2023-11-29 06:39:28,282 INFO L125 PetriNetUnfolderBase]: For 106/108 co-relation queries the response was YES. [2023-11-29 06:39:28,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 163 events. 77/163 cut-off events. For 106/108 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 539 event pairs, 24 based on Foata normal form. 3/154 useless extension candidates. Maximal degree in co-relation 461. Up to 78 conditions per place. [2023-11-29 06:39:28,285 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 30 selfloop transitions, 6 changer transitions 5/47 dead transitions. [2023-11-29 06:39:28,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 47 transitions, 273 flow [2023-11-29 06:39:28,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:39:28,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:39:28,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2023-11-29 06:39:28,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7212121212121212 [2023-11-29 06:39:28,287 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 119 transitions. [2023-11-29 06:39:28,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 119 transitions. [2023-11-29 06:39:28,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:28,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 119 transitions. [2023-11-29 06:39:28,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,289 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,289 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 114 flow. Second operand 5 states and 119 transitions. [2023-11-29 06:39:28,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 47 transitions, 273 flow [2023-11-29 06:39:28,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 47 transitions, 257 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-29 06:39:28,293 INFO L231 Difference]: Finished difference. Result has 41 places, 28 transitions, 141 flow [2023-11-29 06:39:28,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2023-11-29 06:39:28,294 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-11-29 06:39:28,294 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 141 flow [2023-11-29 06:39:28,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:28,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:28,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:39:28,295 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:28,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:28,295 INFO L85 PathProgramCache]: Analyzing trace with hash -446671027, now seen corresponding path program 2 times [2023-11-29 06:39:28,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:28,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293323433] [2023-11-29 06:39:28,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:28,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:28,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:28,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:28,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293323433] [2023-11-29 06:39:28,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293323433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:28,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:28,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:39:28,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133185798] [2023-11-29 06:39:28,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:28,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:39:28,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:28,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:39:28,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:39:28,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:28,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 141 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:28,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:28,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:28,483 INFO L124 PetriNetUnfolderBase]: 93/186 cut-off events. [2023-11-29 06:39:28,484 INFO L125 PetriNetUnfolderBase]: For 254/257 co-relation queries the response was YES. [2023-11-29 06:39:28,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 186 events. 93/186 cut-off events. For 254/257 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 575 event pairs, 39 based on Foata normal form. 4/179 useless extension candidates. Maximal degree in co-relation 612. Up to 133 conditions per place. [2023-11-29 06:39:28,486 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 24 selfloop transitions, 10 changer transitions 4/44 dead transitions. [2023-11-29 06:39:28,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 313 flow [2023-11-29 06:39:28,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:39:28,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:39:28,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2023-11-29 06:39:28,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6909090909090909 [2023-11-29 06:39:28,488 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 114 transitions. [2023-11-29 06:39:28,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 114 transitions. [2023-11-29 06:39:28,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:28,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 114 transitions. [2023-11-29 06:39:28,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,490 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,490 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 141 flow. Second operand 5 states and 114 transitions. [2023-11-29 06:39:28,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 313 flow [2023-11-29 06:39:28,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 294 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-29 06:39:28,494 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 205 flow [2023-11-29 06:39:28,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-11-29 06:39:28,495 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2023-11-29 06:39:28,495 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 205 flow [2023-11-29 06:39:28,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:28,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:28,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:39:28,496 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:28,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:28,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1124879900, now seen corresponding path program 1 times [2023-11-29 06:39:28,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:28,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710800831] [2023-11-29 06:39:28,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:28,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:28,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:28,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710800831] [2023-11-29 06:39:28,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710800831] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:28,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769125185] [2023-11-29 06:39:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:28,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:28,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:28,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:28,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:39:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:28,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:39:28,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:28,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:28,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769125185] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:28,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:28,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-29 06:39:28,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431646600] [2023-11-29 06:39:28,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:28,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:39:28,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:28,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:39:28,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:39:28,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:28,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 205 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:28,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:28,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:28,922 INFO L124 PetriNetUnfolderBase]: 99/194 cut-off events. [2023-11-29 06:39:28,922 INFO L125 PetriNetUnfolderBase]: For 330/332 co-relation queries the response was YES. [2023-11-29 06:39:28,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 194 events. 99/194 cut-off events. For 330/332 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 625 event pairs, 13 based on Foata normal form. 5/187 useless extension candidates. Maximal degree in co-relation 723. Up to 63 conditions per place. [2023-11-29 06:39:28,925 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 46 selfloop transitions, 14 changer transitions 0/66 dead transitions. [2023-11-29 06:39:28,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 66 transitions, 479 flow [2023-11-29 06:39:28,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:39:28,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:39:28,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2023-11-29 06:39:28,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-29 06:39:28,927 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 165 transitions. [2023-11-29 06:39:28,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 165 transitions. [2023-11-29 06:39:28,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:28,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 165 transitions. [2023-11-29 06:39:28,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,929 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,929 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 205 flow. Second operand 7 states and 165 transitions. [2023-11-29 06:39:28,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 66 transitions, 479 flow [2023-11-29 06:39:28,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 66 transitions, 444 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-29 06:39:28,934 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 269 flow [2023-11-29 06:39:28,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-11-29 06:39:28,935 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2023-11-29 06:39:28,935 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 269 flow [2023-11-29 06:39:28,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:28,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:28,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:28,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:39:29,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:29,136 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:29,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:29,137 INFO L85 PathProgramCache]: Analyzing trace with hash -462042298, now seen corresponding path program 2 times [2023-11-29 06:39:29,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:29,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843955588] [2023-11-29 06:39:29,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:29,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:29,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:29,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:29,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843955588] [2023-11-29 06:39:29,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843955588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:29,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:29,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:39:29,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995703347] [2023-11-29 06:39:29,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:29,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:39:29,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:29,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:39:29,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:39:29,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:29,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:29,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:29,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:29,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:29,331 INFO L124 PetriNetUnfolderBase]: 106/212 cut-off events. [2023-11-29 06:39:29,331 INFO L125 PetriNetUnfolderBase]: For 527/527 co-relation queries the response was YES. [2023-11-29 06:39:29,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 212 events. 106/212 cut-off events. For 527/527 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 705 event pairs, 28 based on Foata normal form. 5/217 useless extension candidates. Maximal degree in co-relation 837. Up to 143 conditions per place. [2023-11-29 06:39:29,335 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 35 selfloop transitions, 13 changer transitions 1/55 dead transitions. [2023-11-29 06:39:29,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 472 flow [2023-11-29 06:39:29,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:39:29,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:39:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2023-11-29 06:39:29,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7151515151515152 [2023-11-29 06:39:29,336 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 118 transitions. [2023-11-29 06:39:29,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 118 transitions. [2023-11-29 06:39:29,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:29,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 118 transitions. [2023-11-29 06:39:29,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:29,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:29,338 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:29,338 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 269 flow. Second operand 5 states and 118 transitions. [2023-11-29 06:39:29,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 472 flow [2023-11-29 06:39:29,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 449 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-29 06:39:29,343 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 348 flow [2023-11-29 06:39:29,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=348, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2023-11-29 06:39:29,344 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2023-11-29 06:39:29,344 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 348 flow [2023-11-29 06:39:29,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:29,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:29,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:29,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:39:29,345 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:29,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:29,346 INFO L85 PathProgramCache]: Analyzing trace with hash 556383244, now seen corresponding path program 3 times [2023-11-29 06:39:29,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:29,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732258411] [2023-11-29 06:39:29,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:29,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:29,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:29,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732258411] [2023-11-29 06:39:29,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732258411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:29,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:29,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:39:29,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003424806] [2023-11-29 06:39:29,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:29,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:39:29,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:29,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:39:29,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:39:29,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:29,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 348 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:29,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:29,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:29,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:29,522 INFO L124 PetriNetUnfolderBase]: 104/217 cut-off events. [2023-11-29 06:39:29,522 INFO L125 PetriNetUnfolderBase]: For 629/629 co-relation queries the response was YES. [2023-11-29 06:39:29,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 217 events. 104/217 cut-off events. For 629/629 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 719 event pairs, 27 based on Foata normal form. 2/218 useless extension candidates. Maximal degree in co-relation 889. Up to 118 conditions per place. [2023-11-29 06:39:29,525 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 32 selfloop transitions, 15 changer transitions 3/56 dead transitions. [2023-11-29 06:39:29,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 56 transitions, 506 flow [2023-11-29 06:39:29,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:39:29,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:39:29,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2023-11-29 06:39:29,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2023-11-29 06:39:29,527 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 115 transitions. [2023-11-29 06:39:29,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 115 transitions. [2023-11-29 06:39:29,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:29,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 115 transitions. [2023-11-29 06:39:29,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:29,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:29,529 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:29,529 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 348 flow. Second operand 5 states and 115 transitions. [2023-11-29 06:39:29,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 56 transitions, 506 flow [2023-11-29 06:39:29,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 462 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-29 06:39:29,534 INFO L231 Difference]: Finished difference. Result has 60 places, 43 transitions, 331 flow [2023-11-29 06:39:29,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=331, PETRI_PLACES=60, PETRI_TRANSITIONS=43} [2023-11-29 06:39:29,535 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 25 predicate places. [2023-11-29 06:39:29,535 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 43 transitions, 331 flow [2023-11-29 06:39:29,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:29,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:29,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:29,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:39:29,536 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:29,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:29,536 INFO L85 PathProgramCache]: Analyzing trace with hash -560509745, now seen corresponding path program 3 times [2023-11-29 06:39:29,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:29,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71931212] [2023-11-29 06:39:29,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:29,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:29,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:29,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:29,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71931212] [2023-11-29 06:39:29,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71931212] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:29,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100145638] [2023-11-29 06:39:29,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:39:29,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:29,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:29,627 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:29,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:39:29,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 06:39:29,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:29,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:39:29,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:29,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:29,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:29,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100145638] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:29,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:29,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-29 06:39:29,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402139861] [2023-11-29 06:39:29,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:29,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:39:29,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:29,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:39:29,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:39:29,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:29,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 43 transitions, 331 flow. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:29,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:29,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:29,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:29,938 INFO L124 PetriNetUnfolderBase]: 108/215 cut-off events. [2023-11-29 06:39:29,938 INFO L125 PetriNetUnfolderBase]: For 605/608 co-relation queries the response was YES. [2023-11-29 06:39:29,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911 conditions, 215 events. 108/215 cut-off events. For 605/608 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 696 event pairs, 12 based on Foata normal form. 7/221 useless extension candidates. Maximal degree in co-relation 883. Up to 68 conditions per place. [2023-11-29 06:39:29,941 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 40 selfloop transitions, 21 changer transitions 0/67 dead transitions. [2023-11-29 06:39:29,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 584 flow [2023-11-29 06:39:29,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:39:29,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:39:29,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2023-11-29 06:39:29,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6926406926406926 [2023-11-29 06:39:29,943 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 160 transitions. [2023-11-29 06:39:29,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 160 transitions. [2023-11-29 06:39:29,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:29,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 160 transitions. [2023-11-29 06:39:29,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:29,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:29,945 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:29,945 INFO L175 Difference]: Start difference. First operand has 60 places, 43 transitions, 331 flow. Second operand 7 states and 160 transitions. [2023-11-29 06:39:29,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 584 flow [2023-11-29 06:39:29,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 541 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-29 06:39:29,949 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 384 flow [2023-11-29 06:39:29,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2023-11-29 06:39:29,949 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 26 predicate places. [2023-11-29 06:39:29,950 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 384 flow [2023-11-29 06:39:29,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:29,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:29,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:29,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:39:30,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 06:39:30,151 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:30,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:30,152 INFO L85 PathProgramCache]: Analyzing trace with hash -213482282, now seen corresponding path program 4 times [2023-11-29 06:39:30,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:30,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635378874] [2023-11-29 06:39:30,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:30,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:30,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:30,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:30,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635378874] [2023-11-29 06:39:30,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635378874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:30,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:30,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:39:30,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605276352] [2023-11-29 06:39:30,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:30,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:39:30,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:30,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:39:30,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:39:30,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:30,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 384 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:30,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:30,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:30,315 INFO L124 PetriNetUnfolderBase]: 107/217 cut-off events. [2023-11-29 06:39:30,315 INFO L125 PetriNetUnfolderBase]: For 576/578 co-relation queries the response was YES. [2023-11-29 06:39:30,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 217 events. 107/217 cut-off events. For 576/578 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 729 event pairs, 30 based on Foata normal form. 2/219 useless extension candidates. Maximal degree in co-relation 928. Up to 154 conditions per place. [2023-11-29 06:39:30,319 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 32 selfloop transitions, 15 changer transitions 2/55 dead transitions. [2023-11-29 06:39:30,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 55 transitions, 507 flow [2023-11-29 06:39:30,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:39:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:39:30,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2023-11-29 06:39:30,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6909090909090909 [2023-11-29 06:39:30,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 114 transitions. [2023-11-29 06:39:30,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 114 transitions. [2023-11-29 06:39:30,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:30,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 114 transitions. [2023-11-29 06:39:30,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,322 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,322 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 384 flow. Second operand 5 states and 114 transitions. [2023-11-29 06:39:30,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 55 transitions, 507 flow [2023-11-29 06:39:30,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 55 transitions, 478 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-29 06:39:30,327 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 374 flow [2023-11-29 06:39:30,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=374, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2023-11-29 06:39:30,328 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2023-11-29 06:39:30,328 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 374 flow [2023-11-29 06:39:30,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:30,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:30,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:39:30,329 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:30,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:30,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1265997315, now seen corresponding path program 4 times [2023-11-29 06:39:30,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:30,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652320737] [2023-11-29 06:39:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:30,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:30,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:30,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652320737] [2023-11-29 06:39:30,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652320737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:30,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:30,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:39:30,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352290705] [2023-11-29 06:39:30,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:30,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:39:30,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:30,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:39:30,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:39:30,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:30,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 374 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:30,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:30,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:30,534 INFO L124 PetriNetUnfolderBase]: 103/214 cut-off events. [2023-11-29 06:39:30,534 INFO L125 PetriNetUnfolderBase]: For 593/594 co-relation queries the response was YES. [2023-11-29 06:39:30,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 214 events. 103/214 cut-off events. For 593/594 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 719 event pairs, 25 based on Foata normal form. 3/217 useless extension candidates. Maximal degree in co-relation 901. Up to 147 conditions per place. [2023-11-29 06:39:30,537 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 31 selfloop transitions, 14 changer transitions 3/54 dead transitions. [2023-11-29 06:39:30,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 54 transitions, 489 flow [2023-11-29 06:39:30,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:39:30,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:39:30,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2023-11-29 06:39:30,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6909090909090909 [2023-11-29 06:39:30,539 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 114 transitions. [2023-11-29 06:39:30,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 114 transitions. [2023-11-29 06:39:30,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:30,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 114 transitions. [2023-11-29 06:39:30,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,541 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,541 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 374 flow. Second operand 5 states and 114 transitions. [2023-11-29 06:39:30,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 54 transitions, 489 flow [2023-11-29 06:39:30,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 54 transitions, 459 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:39:30,546 INFO L231 Difference]: Finished difference. Result has 64 places, 45 transitions, 356 flow [2023-11-29 06:39:30,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=356, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2023-11-29 06:39:30,547 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2023-11-29 06:39:30,547 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 356 flow [2023-11-29 06:39:30,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:30,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:30,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 06:39:30,548 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:30,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:30,549 INFO L85 PathProgramCache]: Analyzing trace with hash 370462299, now seen corresponding path program 5 times [2023-11-29 06:39:30,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:30,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889256436] [2023-11-29 06:39:30,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:30,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:30,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:30,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889256436] [2023-11-29 06:39:30,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889256436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:30,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:30,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:39:30,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179372004] [2023-11-29 06:39:30,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:30,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:39:30,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:30,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:39:30,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:39:30,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:30,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 45 transitions, 356 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:30,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:30,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:30,730 INFO L124 PetriNetUnfolderBase]: 108/220 cut-off events. [2023-11-29 06:39:30,730 INFO L125 PetriNetUnfolderBase]: For 701/701 co-relation queries the response was YES. [2023-11-29 06:39:30,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 220 events. 108/220 cut-off events. For 701/701 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 723 event pairs, 24 based on Foata normal form. 4/224 useless extension candidates. Maximal degree in co-relation 933. Up to 151 conditions per place. [2023-11-29 06:39:30,733 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 34 selfloop transitions, 15 changer transitions 0/55 dead transitions. [2023-11-29 06:39:30,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 55 transitions, 502 flow [2023-11-29 06:39:30,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:39:30,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:39:30,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2023-11-29 06:39:30,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2023-11-29 06:39:30,735 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 115 transitions. [2023-11-29 06:39:30,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 115 transitions. [2023-11-29 06:39:30,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:30,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 115 transitions. [2023-11-29 06:39:30,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,737 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,737 INFO L175 Difference]: Start difference. First operand has 64 places, 45 transitions, 356 flow. Second operand 5 states and 115 transitions. [2023-11-29 06:39:30,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 55 transitions, 502 flow [2023-11-29 06:39:30,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 464 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 06:39:30,742 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 361 flow [2023-11-29 06:39:30,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-11-29 06:39:30,742 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2023-11-29 06:39:30,743 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 361 flow [2023-11-29 06:39:30,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:30,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:30,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:39:30,744 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:30,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:30,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1631799932, now seen corresponding path program 5 times [2023-11-29 06:39:30,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:30,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637789627] [2023-11-29 06:39:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:30,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:30,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:30,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:30,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637789627] [2023-11-29 06:39:30,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637789627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:30,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:30,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:39:30,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845541543] [2023-11-29 06:39:30,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:30,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:39:30,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:30,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:39:30,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:39:30,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:30,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:30,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:30,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:30,915 INFO L124 PetriNetUnfolderBase]: 106/216 cut-off events. [2023-11-29 06:39:30,916 INFO L125 PetriNetUnfolderBase]: For 623/623 co-relation queries the response was YES. [2023-11-29 06:39:30,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 216 events. 106/216 cut-off events. For 623/623 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 697 event pairs, 31 based on Foata normal form. 2/217 useless extension candidates. Maximal degree in co-relation 917. Up to 149 conditions per place. [2023-11-29 06:39:30,918 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 29 selfloop transitions, 14 changer transitions 2/51 dead transitions. [2023-11-29 06:39:30,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 51 transitions, 466 flow [2023-11-29 06:39:30,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:39:30,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:39:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2023-11-29 06:39:30,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6787878787878788 [2023-11-29 06:39:30,920 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 112 transitions. [2023-11-29 06:39:30,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 112 transitions. [2023-11-29 06:39:30,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:30,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 112 transitions. [2023-11-29 06:39:30,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,922 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,922 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 361 flow. Second operand 5 states and 112 transitions. [2023-11-29 06:39:30,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 51 transitions, 466 flow [2023-11-29 06:39:30,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 51 transitions, 432 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-29 06:39:30,927 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 336 flow [2023-11-29 06:39:30,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2023-11-29 06:39:30,927 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-29 06:39:30,927 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 336 flow [2023-11-29 06:39:30,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:30,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:30,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:30,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 06:39:30,928 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:30,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:30,929 INFO L85 PathProgramCache]: Analyzing trace with hash 514320444, now seen corresponding path program 6 times [2023-11-29 06:39:30,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:30,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287620687] [2023-11-29 06:39:30,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:30,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:31,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:31,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287620687] [2023-11-29 06:39:31,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287620687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:31,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:31,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:39:31,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614421425] [2023-11-29 06:39:31,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:31,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:39:31,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:31,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:39:31,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:39:31,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:31,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 336 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:31,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:31,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:31,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:31,118 INFO L124 PetriNetUnfolderBase]: 98/196 cut-off events. [2023-11-29 06:39:31,118 INFO L125 PetriNetUnfolderBase]: For 544/544 co-relation queries the response was YES. [2023-11-29 06:39:31,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 196 events. 98/196 cut-off events. For 544/544 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 597 event pairs, 29 based on Foata normal form. 5/200 useless extension candidates. Maximal degree in co-relation 807. Up to 135 conditions per place. [2023-11-29 06:39:31,120 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 33 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2023-11-29 06:39:31,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 52 transitions, 456 flow [2023-11-29 06:39:31,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:39:31,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:39:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2023-11-29 06:39:31,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6909090909090909 [2023-11-29 06:39:31,122 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 114 transitions. [2023-11-29 06:39:31,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 114 transitions. [2023-11-29 06:39:31,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:31,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 114 transitions. [2023-11-29 06:39:31,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:31,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:31,123 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:31,123 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 336 flow. Second operand 5 states and 114 transitions. [2023-11-29 06:39:31,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 52 transitions, 456 flow [2023-11-29 06:39:31,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 52 transitions, 423 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 06:39:31,127 INFO L231 Difference]: Finished difference. Result has 60 places, 43 transitions, 313 flow [2023-11-29 06:39:31,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=313, PETRI_PLACES=60, PETRI_TRANSITIONS=43} [2023-11-29 06:39:31,128 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 25 predicate places. [2023-11-29 06:39:31,128 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 43 transitions, 313 flow [2023-11-29 06:39:31,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:31,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:31,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:31,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:39:31,129 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:31,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:31,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1148255067, now seen corresponding path program 6 times [2023-11-29 06:39:31,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:31,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357445222] [2023-11-29 06:39:31,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:31,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:31,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:31,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:31,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357445222] [2023-11-29 06:39:31,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357445222] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:31,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681320491] [2023-11-29 06:39:31,203 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:39:31,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:31,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:31,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:31,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:39:31,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 06:39:31,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:31,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:39:31,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:31,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:31,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681320491] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:31,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:31,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 06:39:31,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871125974] [2023-11-29 06:39:31,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:31,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:39:31,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:31,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:39:31,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:39:31,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:31,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 43 transitions, 313 flow. Second operand has 10 states, 10 states have (on average 19.2) internal successors, (192), 10 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:31,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:31,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:31,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:31,525 INFO L124 PetriNetUnfolderBase]: 96/183 cut-off events. [2023-11-29 06:39:31,525 INFO L125 PetriNetUnfolderBase]: For 445/445 co-relation queries the response was YES. [2023-11-29 06:39:31,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 789 conditions, 183 events. 96/183 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 537 event pairs, 14 based on Foata normal form. 4/186 useless extension candidates. Maximal degree in co-relation 764. Up to 65 conditions per place. [2023-11-29 06:39:31,527 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 35 selfloop transitions, 24 changer transitions 0/65 dead transitions. [2023-11-29 06:39:31,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 65 transitions, 537 flow [2023-11-29 06:39:31,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:39:31,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:39:31,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2023-11-29 06:39:31,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6545454545454545 [2023-11-29 06:39:31,529 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 216 transitions. [2023-11-29 06:39:31,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 216 transitions. [2023-11-29 06:39:31,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:31,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 216 transitions. [2023-11-29 06:39:31,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:31,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:31,531 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:31,531 INFO L175 Difference]: Start difference. First operand has 60 places, 43 transitions, 313 flow. Second operand 10 states and 216 transitions. [2023-11-29 06:39:31,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 65 transitions, 537 flow [2023-11-29 06:39:31,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 65 transitions, 495 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-29 06:39:31,535 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 364 flow [2023-11-29 06:39:31,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=364, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2023-11-29 06:39:31,536 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2023-11-29 06:39:31,536 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 364 flow [2023-11-29 06:39:31,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.2) internal successors, (192), 10 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:31,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:31,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:31,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:39:31,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 06:39:31,737 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:31,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:31,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1801831682, now seen corresponding path program 1 times [2023-11-29 06:39:31,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:31,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088398000] [2023-11-29 06:39:31,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:31,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:32,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:32,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088398000] [2023-11-29 06:39:32,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088398000] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:32,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169336571] [2023-11-29 06:39:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:32,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:32,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:32,030 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:32,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:39:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:32,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:39:32,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:32,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:32,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:32,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169336571] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:32,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:32,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-29 06:39:32,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862829881] [2023-11-29 06:39:32,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:32,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:39:32,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:32,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:39:32,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:39:32,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:32,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 364 flow. Second operand has 12 states, 12 states have (on average 19.5) internal successors, (234), 12 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:32,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:32,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:32,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:32,725 INFO L124 PetriNetUnfolderBase]: 141/281 cut-off events. [2023-11-29 06:39:32,726 INFO L125 PetriNetUnfolderBase]: For 517/519 co-relation queries the response was YES. [2023-11-29 06:39:32,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1160 conditions, 281 events. 141/281 cut-off events. For 517/519 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1046 event pairs, 13 based on Foata normal form. 3/284 useless extension candidates. Maximal degree in co-relation 1136. Up to 158 conditions per place. [2023-11-29 06:39:32,728 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 53 selfloop transitions, 16 changer transitions 4/79 dead transitions. [2023-11-29 06:39:32,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 79 transitions, 669 flow [2023-11-29 06:39:32,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:39:32,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:39:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2023-11-29 06:39:32,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.70995670995671 [2023-11-29 06:39:32,730 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 164 transitions. [2023-11-29 06:39:32,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 164 transitions. [2023-11-29 06:39:32,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:32,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 164 transitions. [2023-11-29 06:39:32,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:32,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:32,732 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:32,732 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 364 flow. Second operand 7 states and 164 transitions. [2023-11-29 06:39:32,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 79 transitions, 669 flow [2023-11-29 06:39:32,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 79 transitions, 585 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-11-29 06:39:32,735 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 412 flow [2023-11-29 06:39:32,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=412, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2023-11-29 06:39:32,736 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 32 predicate places. [2023-11-29 06:39:32,736 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 412 flow [2023-11-29 06:39:32,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.5) internal successors, (234), 12 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:32,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:32,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:32,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:39:32,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:32,941 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:32,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:32,941 INFO L85 PathProgramCache]: Analyzing trace with hash 238358642, now seen corresponding path program 2 times [2023-11-29 06:39:32,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:32,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969494372] [2023-11-29 06:39:32,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:32,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:33,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:33,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969494372] [2023-11-29 06:39:33,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969494372] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:33,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688856544] [2023-11-29 06:39:33,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:39:33,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:33,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:33,215 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:33,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:39:33,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:39:33,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:33,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:39:33,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:33,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:33,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688856544] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:33,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:33,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-11-29 06:39:33,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611397233] [2023-11-29 06:39:33,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:33,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:39:33,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:33,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:39:33,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:39:33,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:33,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 412 flow. Second operand has 11 states, 11 states have (on average 19.454545454545453) internal successors, (214), 11 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:33,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:33,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:33,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:33,895 INFO L124 PetriNetUnfolderBase]: 144/289 cut-off events. [2023-11-29 06:39:33,895 INFO L125 PetriNetUnfolderBase]: For 644/646 co-relation queries the response was YES. [2023-11-29 06:39:33,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 289 events. 144/289 cut-off events. For 644/646 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1094 event pairs, 14 based on Foata normal form. 3/292 useless extension candidates. Maximal degree in co-relation 1224. Up to 182 conditions per place. [2023-11-29 06:39:33,897 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 53 selfloop transitions, 17 changer transitions 4/80 dead transitions. [2023-11-29 06:39:33,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 80 transitions, 669 flow [2023-11-29 06:39:33,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:39:33,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:39:33,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2023-11-29 06:39:33,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2023-11-29 06:39:33,899 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 161 transitions. [2023-11-29 06:39:33,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 161 transitions. [2023-11-29 06:39:33,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:33,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 161 transitions. [2023-11-29 06:39:33,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:33,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:33,900 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:33,900 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 412 flow. Second operand 7 states and 161 transitions. [2023-11-29 06:39:33,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 80 transitions, 669 flow [2023-11-29 06:39:33,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 80 transitions, 636 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-11-29 06:39:33,906 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 484 flow [2023-11-29 06:39:33,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-11-29 06:39:33,907 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 38 predicate places. [2023-11-29 06:39:33,907 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 484 flow [2023-11-29 06:39:33,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.454545454545453) internal successors, (214), 11 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:33,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:33,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:33,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:39:34,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:34,108 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:34,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:34,108 INFO L85 PathProgramCache]: Analyzing trace with hash 941719406, now seen corresponding path program 3 times [2023-11-29 06:39:34,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:34,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291517878] [2023-11-29 06:39:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:34,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:34,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:34,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291517878] [2023-11-29 06:39:34,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291517878] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:34,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996931469] [2023-11-29 06:39:34,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:39:34,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:34,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:34,459 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:34,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:39:34,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 06:39:34,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:34,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:39:34,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:34,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:34,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:34,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996931469] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:34,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:34,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-11-29 06:39:34,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332172331] [2023-11-29 06:39:34,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:34,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:39:34,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:34,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:39:34,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:39:35,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2023-11-29 06:39:35,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 484 flow. Second operand has 15 states, 15 states have (on average 15.866666666666667) internal successors, (238), 15 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:35,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:35,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2023-11-29 06:39:35,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:35,296 INFO L124 PetriNetUnfolderBase]: 161/304 cut-off events. [2023-11-29 06:39:35,296 INFO L125 PetriNetUnfolderBase]: For 845/845 co-relation queries the response was YES. [2023-11-29 06:39:35,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1426 conditions, 304 events. 161/304 cut-off events. For 845/845 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1104 event pairs, 17 based on Foata normal form. 1/305 useless extension candidates. Maximal degree in co-relation 1400. Up to 180 conditions per place. [2023-11-29 06:39:35,300 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 58 selfloop transitions, 20 changer transitions 5/87 dead transitions. [2023-11-29 06:39:35,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 87 transitions, 742 flow [2023-11-29 06:39:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:39:35,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:39:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2023-11-29 06:39:35,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6147186147186147 [2023-11-29 06:39:35,302 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 142 transitions. [2023-11-29 06:39:35,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 142 transitions. [2023-11-29 06:39:35,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:35,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 142 transitions. [2023-11-29 06:39:35,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:35,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:35,305 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:35,305 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 484 flow. Second operand 7 states and 142 transitions. [2023-11-29 06:39:35,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 87 transitions, 742 flow [2023-11-29 06:39:35,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 87 transitions, 698 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-29 06:39:35,312 INFO L231 Difference]: Finished difference. Result has 77 places, 64 transitions, 518 flow [2023-11-29 06:39:35,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=518, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2023-11-29 06:39:35,313 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 42 predicate places. [2023-11-29 06:39:35,314 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 518 flow [2023-11-29 06:39:35,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.866666666666667) internal successors, (238), 15 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:35,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:35,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:35,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:39:35,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:35,515 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:35,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:35,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1432203698, now seen corresponding path program 4 times [2023-11-29 06:39:35,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:35,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939032677] [2023-11-29 06:39:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:35,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:35,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:35,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939032677] [2023-11-29 06:39:35,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939032677] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:35,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556363347] [2023-11-29 06:39:35,834 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:39:35,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:35,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:35,835 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:35,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:39:35,935 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:39:35,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:35,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:39:35,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:36,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:36,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556363347] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:36,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:36,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-11-29 06:39:36,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447771776] [2023-11-29 06:39:36,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:36,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:39:36,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:36,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:39:36,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:39:36,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:36,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 64 transitions, 518 flow. Second operand has 11 states, 11 states have (on average 20.181818181818183) internal successors, (222), 11 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:36,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:36,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:36,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:36,494 INFO L124 PetriNetUnfolderBase]: 166/323 cut-off events. [2023-11-29 06:39:36,494 INFO L125 PetriNetUnfolderBase]: For 1039/1039 co-relation queries the response was YES. [2023-11-29 06:39:36,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 323 events. 166/323 cut-off events. For 1039/1039 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1245 event pairs, 14 based on Foata normal form. 1/324 useless extension candidates. Maximal degree in co-relation 1440. Up to 235 conditions per place. [2023-11-29 06:39:36,498 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 59 selfloop transitions, 19 changer transitions 4/88 dead transitions. [2023-11-29 06:39:36,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 88 transitions, 817 flow [2023-11-29 06:39:36,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:39:36,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:39:36,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2023-11-29 06:39:36,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.670995670995671 [2023-11-29 06:39:36,500 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 155 transitions. [2023-11-29 06:39:36,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 155 transitions. [2023-11-29 06:39:36,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:36,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 155 transitions. [2023-11-29 06:39:36,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:36,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:36,502 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:36,502 INFO L175 Difference]: Start difference. First operand has 77 places, 64 transitions, 518 flow. Second operand 7 states and 155 transitions. [2023-11-29 06:39:36,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 88 transitions, 817 flow [2023-11-29 06:39:36,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 770 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-29 06:39:36,511 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 639 flow [2023-11-29 06:39:36,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=639, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2023-11-29 06:39:36,512 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 47 predicate places. [2023-11-29 06:39:36,512 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 639 flow [2023-11-29 06:39:36,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.181818181818183) internal successors, (222), 11 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:36,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:36,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:36,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:39:36,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 06:39:36,719 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:36,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:36,719 INFO L85 PathProgramCache]: Analyzing trace with hash -112342614, now seen corresponding path program 5 times [2023-11-29 06:39:36,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:36,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737935944] [2023-11-29 06:39:36,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:36,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:37,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:37,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737935944] [2023-11-29 06:39:37,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737935944] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:37,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424785812] [2023-11-29 06:39:37,007 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:39:37,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:37,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:37,008 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:37,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:39:37,107 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 06:39:37,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:37,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:39:37,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:37,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:37,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424785812] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:37,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:37,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-11-29 06:39:37,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190846522] [2023-11-29 06:39:37,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:37,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:39:37,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:37,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:39:37,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:39:37,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:37,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 639 flow. Second operand has 11 states, 11 states have (on average 19.545454545454547) internal successors, (215), 11 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:37,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:37,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:37,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:37,662 INFO L124 PetriNetUnfolderBase]: 178/350 cut-off events. [2023-11-29 06:39:37,662 INFO L125 PetriNetUnfolderBase]: For 1301/1302 co-relation queries the response was YES. [2023-11-29 06:39:37,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 350 events. 178/350 cut-off events. For 1301/1302 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1393 event pairs, 14 based on Foata normal form. 2/352 useless extension candidates. Maximal degree in co-relation 1640. Up to 238 conditions per place. [2023-11-29 06:39:37,679 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 66 selfloop transitions, 20 changer transitions 4/96 dead transitions. [2023-11-29 06:39:37,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 937 flow [2023-11-29 06:39:37,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:39:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:39:37,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2023-11-29 06:39:37,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6926406926406926 [2023-11-29 06:39:37,681 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 160 transitions. [2023-11-29 06:39:37,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 160 transitions. [2023-11-29 06:39:37,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:37,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 160 transitions. [2023-11-29 06:39:37,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:37,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:37,683 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:37,683 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 639 flow. Second operand 7 states and 160 transitions. [2023-11-29 06:39:37,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 937 flow [2023-11-29 06:39:37,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 96 transitions, 908 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-11-29 06:39:37,695 INFO L231 Difference]: Finished difference. Result has 88 places, 80 transitions, 724 flow [2023-11-29 06:39:37,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=724, PETRI_PLACES=88, PETRI_TRANSITIONS=80} [2023-11-29 06:39:37,695 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 53 predicate places. [2023-11-29 06:39:37,696 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 80 transitions, 724 flow [2023-11-29 06:39:37,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.545454545454547) internal successors, (215), 11 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:37,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:37,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:37,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:39:37,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 06:39:37,902 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:37,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:37,902 INFO L85 PathProgramCache]: Analyzing trace with hash 300547416, now seen corresponding path program 6 times [2023-11-29 06:39:37,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:37,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612001475] [2023-11-29 06:39:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:37,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:38,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:38,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612001475] [2023-11-29 06:39:38,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612001475] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:38,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073248785] [2023-11-29 06:39:38,208 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:39:38,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:38,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:38,209 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:38,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:39:38,310 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 06:39:38,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:38,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:39:38,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:38,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:38,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073248785] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:38,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:38,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-11-29 06:39:38,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999578435] [2023-11-29 06:39:38,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:38,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:39:38,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:38,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:39:38,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:39:38,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:38,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 724 flow. Second operand has 11 states, 11 states have (on average 19.545454545454547) internal successors, (215), 11 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:38,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:38,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:38,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:38,830 INFO L124 PetriNetUnfolderBase]: 176/342 cut-off events. [2023-11-29 06:39:38,830 INFO L125 PetriNetUnfolderBase]: For 1580/1580 co-relation queries the response was YES. [2023-11-29 06:39:38,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 342 events. 176/342 cut-off events. For 1580/1580 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1355 event pairs, 14 based on Foata normal form. 1/343 useless extension candidates. Maximal degree in co-relation 1698. Up to 238 conditions per place. [2023-11-29 06:39:38,835 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 64 selfloop transitions, 21 changer transitions 4/95 dead transitions. [2023-11-29 06:39:38,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 95 transitions, 988 flow [2023-11-29 06:39:38,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:39:38,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:39:38,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2023-11-29 06:39:38,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.683982683982684 [2023-11-29 06:39:38,837 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 158 transitions. [2023-11-29 06:39:38,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 158 transitions. [2023-11-29 06:39:38,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:38,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 158 transitions. [2023-11-29 06:39:38,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:38,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:38,839 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:38,839 INFO L175 Difference]: Start difference. First operand has 88 places, 80 transitions, 724 flow. Second operand 7 states and 158 transitions. [2023-11-29 06:39:38,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 95 transitions, 988 flow [2023-11-29 06:39:38,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 95 transitions, 909 flow, removed 27 selfloop flow, removed 4 redundant places. [2023-11-29 06:39:38,850 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 739 flow [2023-11-29 06:39:38,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=739, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2023-11-29 06:39:38,851 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 57 predicate places. [2023-11-29 06:39:38,851 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 739 flow [2023-11-29 06:39:38,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.545454545454547) internal successors, (215), 11 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:38,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:38,852 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:38,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:39:39,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 06:39:39,052 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:39,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:39,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1561574299, now seen corresponding path program 7 times [2023-11-29 06:39:39,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:39,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46122656] [2023-11-29 06:39:39,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:39,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:39,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:39,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46122656] [2023-11-29 06:39:39,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46122656] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:39,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726888222] [2023-11-29 06:39:39,146 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:39:39,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:39,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:39,147 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:39,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:39:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:39,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:39,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:39,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:39,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:39,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726888222] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:39,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:39,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-29 06:39:39,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453613181] [2023-11-29 06:39:39,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:39,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:39:39,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:39,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:39:39,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:39:39,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:39,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 739 flow. Second operand has 11 states, 11 states have (on average 19.363636363636363) internal successors, (213), 11 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:39,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:39,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:39,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:39,560 INFO L124 PetriNetUnfolderBase]: 203/387 cut-off events. [2023-11-29 06:39:39,560 INFO L125 PetriNetUnfolderBase]: For 1724/1724 co-relation queries the response was YES. [2023-11-29 06:39:39,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 387 events. 203/387 cut-off events. For 1724/1724 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1578 event pairs, 20 based on Foata normal form. 5/392 useless extension candidates. Maximal degree in co-relation 1913. Up to 103 conditions per place. [2023-11-29 06:39:39,565 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 79 selfloop transitions, 42 changer transitions 0/127 dead transitions. [2023-11-29 06:39:39,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 127 transitions, 1296 flow [2023-11-29 06:39:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:39:39,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:39:39,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2023-11-29 06:39:39,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2023-11-29 06:39:39,567 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 230 transitions. [2023-11-29 06:39:39,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 230 transitions. [2023-11-29 06:39:39,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:39,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 230 transitions. [2023-11-29 06:39:39,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:39,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:39,569 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:39,569 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 739 flow. Second operand 10 states and 230 transitions. [2023-11-29 06:39:39,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 127 transitions, 1296 flow [2023-11-29 06:39:39,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 127 transitions, 1235 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-11-29 06:39:39,582 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 955 flow [2023-11-29 06:39:39,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=955, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2023-11-29 06:39:39,582 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 68 predicate places. [2023-11-29 06:39:39,582 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 955 flow [2023-11-29 06:39:39,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.363636363636363) internal successors, (213), 11 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:39,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:39,583 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:39,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 06:39:39,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 06:39:39,783 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:39,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:39,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1833305317, now seen corresponding path program 8 times [2023-11-29 06:39:39,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:39,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488793361] [2023-11-29 06:39:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:39,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:39,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:39,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488793361] [2023-11-29 06:39:39,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488793361] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:39,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756660726] [2023-11-29 06:39:39,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:39:39,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:39,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:39,878 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:39,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:39:39,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:39:39,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:39,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:39,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:40,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:40,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756660726] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:40,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:40,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-29 06:39:40,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026520788] [2023-11-29 06:39:40,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:40,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:39:40,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:40,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:39:40,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:39:40,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:40,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 955 flow. Second operand has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:40,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:40,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:40,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:40,363 INFO L124 PetriNetUnfolderBase]: 255/486 cut-off events. [2023-11-29 06:39:40,364 INFO L125 PetriNetUnfolderBase]: For 3893/3894 co-relation queries the response was YES. [2023-11-29 06:39:40,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2815 conditions, 486 events. 255/486 cut-off events. For 3893/3894 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2059 event pairs, 28 based on Foata normal form. 17/503 useless extension candidates. Maximal degree in co-relation 2770. Up to 154 conditions per place. [2023-11-29 06:39:40,371 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 82 selfloop transitions, 61 changer transitions 0/149 dead transitions. [2023-11-29 06:39:40,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 149 transitions, 1830 flow [2023-11-29 06:39:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:39:40,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 06:39:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 308 transitions. [2023-11-29 06:39:40,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 06:39:40,372 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 308 transitions. [2023-11-29 06:39:40,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 308 transitions. [2023-11-29 06:39:40,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:40,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 308 transitions. [2023-11-29 06:39:40,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 22.0) internal successors, (308), 14 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:40,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 33.0) internal successors, (495), 15 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:40,375 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 33.0) internal successors, (495), 15 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:40,375 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 955 flow. Second operand 14 states and 308 transitions. [2023-11-29 06:39:40,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 149 transitions, 1830 flow [2023-11-29 06:39:40,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 149 transitions, 1655 flow, removed 73 selfloop flow, removed 2 redundant places. [2023-11-29 06:39:40,396 INFO L231 Difference]: Finished difference. Result has 123 places, 120 transitions, 1432 flow [2023-11-29 06:39:40,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1432, PETRI_PLACES=123, PETRI_TRANSITIONS=120} [2023-11-29 06:39:40,397 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 88 predicate places. [2023-11-29 06:39:40,397 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 120 transitions, 1432 flow [2023-11-29 06:39:40,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:40,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:40,398 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:40,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 06:39:40,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 06:39:40,600 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:40,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:40,600 INFO L85 PathProgramCache]: Analyzing trace with hash -952449112, now seen corresponding path program 9 times [2023-11-29 06:39:40,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:40,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523420954] [2023-11-29 06:39:40,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:40,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:40,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:40,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523420954] [2023-11-29 06:39:40,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523420954] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:40,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558219526] [2023-11-29 06:39:40,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:39:40,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:40,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:40,674 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:40,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:39:40,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 06:39:40,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:40,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:40,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:40,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:40,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558219526] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:40,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:40,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-29 06:39:40,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671649864] [2023-11-29 06:39:40,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:40,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:39:40,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:40,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:39:40,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:39:40,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:40,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions, 1432 flow. Second operand has 11 states, 11 states have (on average 19.09090909090909) internal successors, (210), 11 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:40,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:40,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:40,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:41,063 INFO L124 PetriNetUnfolderBase]: 256/493 cut-off events. [2023-11-29 06:39:41,063 INFO L125 PetriNetUnfolderBase]: For 4679/4680 co-relation queries the response was YES. [2023-11-29 06:39:41,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3062 conditions, 493 events. 256/493 cut-off events. For 4679/4680 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2177 event pairs, 48 based on Foata normal form. 3/496 useless extension candidates. Maximal degree in co-relation 3008. Up to 239 conditions per place. [2023-11-29 06:39:41,070 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 97 selfloop transitions, 33 changer transitions 8/144 dead transitions. [2023-11-29 06:39:41,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 144 transitions, 1905 flow [2023-11-29 06:39:41,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:39:41,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:39:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2023-11-29 06:39:41,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7056277056277056 [2023-11-29 06:39:41,071 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 163 transitions. [2023-11-29 06:39:41,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 163 transitions. [2023-11-29 06:39:41,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:41,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 163 transitions. [2023-11-29 06:39:41,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:41,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:41,073 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:41,073 INFO L175 Difference]: Start difference. First operand has 123 places, 120 transitions, 1432 flow. Second operand 7 states and 163 transitions. [2023-11-29 06:39:41,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 144 transitions, 1905 flow [2023-11-29 06:39:41,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 144 transitions, 1690 flow, removed 85 selfloop flow, removed 2 redundant places. [2023-11-29 06:39:41,098 INFO L231 Difference]: Finished difference. Result has 129 places, 119 transitions, 1279 flow [2023-11-29 06:39:41,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1279, PETRI_PLACES=129, PETRI_TRANSITIONS=119} [2023-11-29 06:39:41,098 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 94 predicate places. [2023-11-29 06:39:41,098 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 119 transitions, 1279 flow [2023-11-29 06:39:41,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.09090909090909) internal successors, (210), 11 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:41,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:41,099 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:41,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 06:39:41,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 06:39:41,299 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:41,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:41,300 INFO L85 PathProgramCache]: Analyzing trace with hash 611980199, now seen corresponding path program 10 times [2023-11-29 06:39:41,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:41,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449255084] [2023-11-29 06:39:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:41,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:41,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:41,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449255084] [2023-11-29 06:39:41,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449255084] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:41,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131318243] [2023-11-29 06:39:41,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:39:41,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:41,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:41,375 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:41,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:39:41,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:39:41,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:41,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:41,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:41,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:41,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:41,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131318243] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:41,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:41,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-29 06:39:41,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654594879] [2023-11-29 06:39:41,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:41,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:39:41,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:41,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:39:41,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:39:41,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:41,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 119 transitions, 1279 flow. Second operand has 12 states, 12 states have (on average 19.166666666666668) internal successors, (230), 12 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:41,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:41,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:41,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:41,977 INFO L124 PetriNetUnfolderBase]: 303/585 cut-off events. [2023-11-29 06:39:41,977 INFO L125 PetriNetUnfolderBase]: For 6180/6180 co-relation queries the response was YES. [2023-11-29 06:39:41,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3431 conditions, 585 events. 303/585 cut-off events. For 6180/6180 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2633 event pairs, 23 based on Foata normal form. 12/597 useless extension candidates. Maximal degree in co-relation 3374. Up to 185 conditions per place. [2023-11-29 06:39:41,987 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 79 selfloop transitions, 93 changer transitions 0/178 dead transitions. [2023-11-29 06:39:41,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 178 transitions, 2236 flow [2023-11-29 06:39:41,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:39:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 06:39:41,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 351 transitions. [2023-11-29 06:39:41,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6647727272727273 [2023-11-29 06:39:41,988 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 351 transitions. [2023-11-29 06:39:41,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 351 transitions. [2023-11-29 06:39:41,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:41,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 351 transitions. [2023-11-29 06:39:41,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 21.9375) internal successors, (351), 16 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:41,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 33.0) internal successors, (561), 17 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:41,991 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 33.0) internal successors, (561), 17 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:41,991 INFO L175 Difference]: Start difference. First operand has 129 places, 119 transitions, 1279 flow. Second operand 16 states and 351 transitions. [2023-11-29 06:39:41,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 178 transitions, 2236 flow [2023-11-29 06:39:42,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 178 transitions, 2147 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-29 06:39:42,026 INFO L231 Difference]: Finished difference. Result has 144 places, 149 transitions, 1915 flow [2023-11-29 06:39:42,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1915, PETRI_PLACES=144, PETRI_TRANSITIONS=149} [2023-11-29 06:39:42,027 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 109 predicate places. [2023-11-29 06:39:42,027 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 149 transitions, 1915 flow [2023-11-29 06:39:42,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.166666666666668) internal successors, (230), 12 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:42,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:42,028 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:42,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 06:39:42,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 06:39:42,234 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:42,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:42,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1652936885, now seen corresponding path program 11 times [2023-11-29 06:39:42,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:42,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252325656] [2023-11-29 06:39:42,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:42,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:42,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:42,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252325656] [2023-11-29 06:39:42,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252325656] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:42,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063860828] [2023-11-29 06:39:42,322 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:39:42,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:42,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:42,323 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:42,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 06:39:42,418 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 06:39:42,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:42,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:42,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:42,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:42,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:42,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063860828] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:42,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:42,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-29 06:39:42,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994192648] [2023-11-29 06:39:42,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:42,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:39:42,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:42,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:39:42,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:39:42,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:42,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 149 transitions, 1915 flow. Second operand has 12 states, 12 states have (on average 19.0) internal successors, (228), 12 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:42,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:42,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:42,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:42,751 INFO L124 PetriNetUnfolderBase]: 303/594 cut-off events. [2023-11-29 06:39:42,751 INFO L125 PetriNetUnfolderBase]: For 7431/7434 co-relation queries the response was YES. [2023-11-29 06:39:42,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3932 conditions, 594 events. 303/594 cut-off events. For 7431/7434 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2734 event pairs, 29 based on Foata normal form. 4/598 useless extension candidates. Maximal degree in co-relation 3870. Up to 241 conditions per place. [2023-11-29 06:39:42,759 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 88 selfloop transitions, 78 changer transitions 2/174 dead transitions. [2023-11-29 06:39:42,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 174 transitions, 2504 flow [2023-11-29 06:39:42,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:39:42,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:39:42,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 282 transitions. [2023-11-29 06:39:42,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6573426573426573 [2023-11-29 06:39:42,761 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 282 transitions. [2023-11-29 06:39:42,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 282 transitions. [2023-11-29 06:39:42,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:42,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 282 transitions. [2023-11-29 06:39:42,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 21.692307692307693) internal successors, (282), 13 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:42,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 33.0) internal successors, (462), 14 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:42,763 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 33.0) internal successors, (462), 14 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:42,764 INFO L175 Difference]: Start difference. First operand has 144 places, 149 transitions, 1915 flow. Second operand 13 states and 282 transitions. [2023-11-29 06:39:42,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 174 transitions, 2504 flow [2023-11-29 06:39:42,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 174 transitions, 2274 flow, removed 96 selfloop flow, removed 4 redundant places. [2023-11-29 06:39:42,796 INFO L231 Difference]: Finished difference. Result has 154 places, 149 transitions, 1854 flow [2023-11-29 06:39:42,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1854, PETRI_PLACES=154, PETRI_TRANSITIONS=149} [2023-11-29 06:39:42,797 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 119 predicate places. [2023-11-29 06:39:42,797 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 149 transitions, 1854 flow [2023-11-29 06:39:42,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.0) internal successors, (228), 12 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:42,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:42,798 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:42,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 06:39:42,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 06:39:42,998 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:42,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:42,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1979914920, now seen corresponding path program 12 times [2023-11-29 06:39:42,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:42,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839712991] [2023-11-29 06:39:42,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:42,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:43,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:43,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839712991] [2023-11-29 06:39:43,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839712991] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:43,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945632199] [2023-11-29 06:39:43,082 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:39:43,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:43,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:43,083 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:43,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 06:39:43,192 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 06:39:43,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:43,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:43,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:43,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:43,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:43,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945632199] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:43,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:43,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-29 06:39:43,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733071962] [2023-11-29 06:39:43,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:43,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:39:43,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:43,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:39:43,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:39:43,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:43,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 149 transitions, 1854 flow. Second operand has 12 states, 12 states have (on average 19.166666666666668) internal successors, (230), 12 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:43,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:43,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:43,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:43,560 INFO L124 PetriNetUnfolderBase]: 349/667 cut-off events. [2023-11-29 06:39:43,560 INFO L125 PetriNetUnfolderBase]: For 10675/10675 co-relation queries the response was YES. [2023-11-29 06:39:43,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4616 conditions, 667 events. 349/667 cut-off events. For 10675/10675 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3132 event pairs, 58 based on Foata normal form. 12/679 useless extension candidates. Maximal degree in co-relation 4551. Up to 404 conditions per place. [2023-11-29 06:39:43,570 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 126 selfloop transitions, 65 changer transitions 2/199 dead transitions. [2023-11-29 06:39:43,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 199 transitions, 2963 flow [2023-11-29 06:39:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:39:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 06:39:43,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 267 transitions. [2023-11-29 06:39:43,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6742424242424242 [2023-11-29 06:39:43,572 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 267 transitions. [2023-11-29 06:39:43,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 267 transitions. [2023-11-29 06:39:43,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:43,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 267 transitions. [2023-11-29 06:39:43,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 22.25) internal successors, (267), 12 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:43,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 33.0) internal successors, (429), 13 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:43,574 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 33.0) internal successors, (429), 13 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:43,574 INFO L175 Difference]: Start difference. First operand has 154 places, 149 transitions, 1854 flow. Second operand 12 states and 267 transitions. [2023-11-29 06:39:43,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 199 transitions, 2963 flow [2023-11-29 06:39:43,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 199 transitions, 2748 flow, removed 31 selfloop flow, removed 12 redundant places. [2023-11-29 06:39:43,609 INFO L231 Difference]: Finished difference. Result has 158 places, 173 transitions, 2401 flow [2023-11-29 06:39:43,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2401, PETRI_PLACES=158, PETRI_TRANSITIONS=173} [2023-11-29 06:39:43,609 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 123 predicate places. [2023-11-29 06:39:43,610 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 173 transitions, 2401 flow [2023-11-29 06:39:43,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.166666666666668) internal successors, (230), 12 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:43,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:43,610 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:43,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 06:39:43,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:43,810 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:43,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:43,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1858781710, now seen corresponding path program 13 times [2023-11-29 06:39:43,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:43,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822956602] [2023-11-29 06:39:43,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:43,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:43,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:43,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822956602] [2023-11-29 06:39:43,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822956602] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:43,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114083944] [2023-11-29 06:39:43,892 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:39:43,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:43,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:43,893 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:43,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 06:39:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:43,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:43,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:44,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:44,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:44,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:44,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114083944] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:44,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:44,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-29 06:39:44,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173539709] [2023-11-29 06:39:44,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:44,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:39:44,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:44,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:39:44,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:39:44,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:44,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 173 transitions, 2401 flow. Second operand has 12 states, 12 states have (on average 19.0) internal successors, (228), 12 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:44,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:44,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:44,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:44,383 INFO L124 PetriNetUnfolderBase]: 350/659 cut-off events. [2023-11-29 06:39:44,384 INFO L125 PetriNetUnfolderBase]: For 9879/9879 co-relation queries the response was YES. [2023-11-29 06:39:44,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4628 conditions, 659 events. 350/659 cut-off events. For 9879/9879 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3031 event pairs, 72 based on Foata normal form. 8/667 useless extension candidates. Maximal degree in co-relation 4560. Up to 411 conditions per place. [2023-11-29 06:39:44,395 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 126 selfloop transitions, 71 changer transitions 0/203 dead transitions. [2023-11-29 06:39:44,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 203 transitions, 2995 flow [2023-11-29 06:39:44,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:39:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 06:39:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 367 transitions. [2023-11-29 06:39:44,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6541889483065954 [2023-11-29 06:39:44,397 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 367 transitions. [2023-11-29 06:39:44,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 367 transitions. [2023-11-29 06:39:44,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:44,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 367 transitions. [2023-11-29 06:39:44,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 21.58823529411765) internal successors, (367), 17 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:44,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:44,399 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:44,399 INFO L175 Difference]: Start difference. First operand has 158 places, 173 transitions, 2401 flow. Second operand 17 states and 367 transitions. [2023-11-29 06:39:44,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 203 transitions, 2995 flow [2023-11-29 06:39:44,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 203 transitions, 2625 flow, removed 145 selfloop flow, removed 4 redundant places. [2023-11-29 06:39:44,462 INFO L231 Difference]: Finished difference. Result has 173 places, 179 transitions, 2290 flow [2023-11-29 06:39:44,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2290, PETRI_PLACES=173, PETRI_TRANSITIONS=179} [2023-11-29 06:39:44,463 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 138 predicate places. [2023-11-29 06:39:44,463 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 179 transitions, 2290 flow [2023-11-29 06:39:44,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.0) internal successors, (228), 12 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:44,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:44,463 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:44,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 06:39:44,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:44,665 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:44,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:44,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2127910358, now seen corresponding path program 14 times [2023-11-29 06:39:44,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:44,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072483846] [2023-11-29 06:39:44,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:44,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:44,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:44,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:44,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072483846] [2023-11-29 06:39:44,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072483846] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:44,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324799814] [2023-11-29 06:39:44,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:39:44,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:44,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:44,754 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:44,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 06:39:44,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:39:44,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:44,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:44,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:44,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:44,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324799814] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:44,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:44,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-29 06:39:44,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73219942] [2023-11-29 06:39:44,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:44,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:39:44,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:44,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:39:44,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:39:44,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:44,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 179 transitions, 2290 flow. Second operand has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:44,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:44,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:44,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:45,200 INFO L124 PetriNetUnfolderBase]: 349/655 cut-off events. [2023-11-29 06:39:45,200 INFO L125 PetriNetUnfolderBase]: For 7940/7943 co-relation queries the response was YES. [2023-11-29 06:39:45,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4429 conditions, 655 events. 349/655 cut-off events. For 7940/7943 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3018 event pairs, 70 based on Foata normal form. 3/658 useless extension candidates. Maximal degree in co-relation 4358. Up to 430 conditions per place. [2023-11-29 06:39:45,210 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 136 selfloop transitions, 47 changer transitions 8/197 dead transitions. [2023-11-29 06:39:45,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 197 transitions, 2772 flow [2023-11-29 06:39:45,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:39:45,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:39:45,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 220 transitions. [2023-11-29 06:39:45,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 06:39:45,213 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 220 transitions. [2023-11-29 06:39:45,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 220 transitions. [2023-11-29 06:39:45,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:45,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 220 transitions. [2023-11-29 06:39:45,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 22.0) internal successors, (220), 10 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:45,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:45,216 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:45,216 INFO L175 Difference]: Start difference. First operand has 173 places, 179 transitions, 2290 flow. Second operand 10 states and 220 transitions. [2023-11-29 06:39:45,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 197 transitions, 2772 flow [2023-11-29 06:39:45,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 197 transitions, 2555 flow, removed 41 selfloop flow, removed 12 redundant places. [2023-11-29 06:39:45,269 INFO L231 Difference]: Finished difference. Result has 171 places, 175 transitions, 2110 flow [2023-11-29 06:39:45,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2110, PETRI_PLACES=171, PETRI_TRANSITIONS=175} [2023-11-29 06:39:45,270 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 136 predicate places. [2023-11-29 06:39:45,270 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 175 transitions, 2110 flow [2023-11-29 06:39:45,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:45,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:45,271 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:45,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 06:39:45,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 06:39:45,471 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:45,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:45,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2048118121, now seen corresponding path program 15 times [2023-11-29 06:39:45,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:45,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361015374] [2023-11-29 06:39:45,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:45,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:45,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:45,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361015374] [2023-11-29 06:39:45,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361015374] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:45,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163954207] [2023-11-29 06:39:45,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:39:45,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:45,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:45,549 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:45,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 06:39:45,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 06:39:45,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:45,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:45,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:45,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:45,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163954207] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:45,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:45,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-11-29 06:39:45,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588696138] [2023-11-29 06:39:45,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:45,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:39:45,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:45,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:39:45,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:39:45,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:45,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 175 transitions, 2110 flow. Second operand has 13 states, 13 states have (on average 19.0) internal successors, (247), 13 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:45,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:45,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:45,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:46,114 INFO L124 PetriNetUnfolderBase]: 453/843 cut-off events. [2023-11-29 06:39:46,114 INFO L125 PetriNetUnfolderBase]: For 11082/11084 co-relation queries the response was YES. [2023-11-29 06:39:46,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5579 conditions, 843 events. 453/843 cut-off events. For 11082/11084 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4040 event pairs, 37 based on Foata normal form. 12/855 useless extension candidates. Maximal degree in co-relation 5509. Up to 250 conditions per place. [2023-11-29 06:39:46,127 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 100 selfloop transitions, 153 changer transitions 0/259 dead transitions. [2023-11-29 06:39:46,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 259 transitions, 3663 flow [2023-11-29 06:39:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:39:46,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 06:39:46,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 372 transitions. [2023-11-29 06:39:46,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6631016042780749 [2023-11-29 06:39:46,129 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 372 transitions. [2023-11-29 06:39:46,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 372 transitions. [2023-11-29 06:39:46,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:46,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 372 transitions. [2023-11-29 06:39:46,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 21.88235294117647) internal successors, (372), 17 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:46,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:46,132 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:46,132 INFO L175 Difference]: Start difference. First operand has 171 places, 175 transitions, 2110 flow. Second operand 17 states and 372 transitions. [2023-11-29 06:39:46,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 259 transitions, 3663 flow [2023-11-29 06:39:46,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 259 transitions, 3546 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-11-29 06:39:46,188 INFO L231 Difference]: Finished difference. Result has 184 places, 231 transitions, 3391 flow [2023-11-29 06:39:46,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2005, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3391, PETRI_PLACES=184, PETRI_TRANSITIONS=231} [2023-11-29 06:39:46,189 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 149 predicate places. [2023-11-29 06:39:46,189 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 231 transitions, 3391 flow [2023-11-29 06:39:46,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.0) internal successors, (247), 13 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:46,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:46,190 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:46,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-29 06:39:46,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:46,390 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:46,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:46,391 INFO L85 PathProgramCache]: Analyzing trace with hash -522181539, now seen corresponding path program 16 times [2023-11-29 06:39:46,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:46,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733975247] [2023-11-29 06:39:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:46,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:46,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:46,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733975247] [2023-11-29 06:39:46,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733975247] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:46,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49217383] [2023-11-29 06:39:46,478 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:39:46,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:46,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:46,479 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:46,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 06:39:46,570 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:39:46,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:46,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:46,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:46,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:46,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49217383] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:46,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:46,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-29 06:39:46,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210942051] [2023-11-29 06:39:46,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:46,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:39:46,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:46,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:39:46,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:39:46,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:46,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 231 transitions, 3391 flow. Second operand has 15 states, 15 states have (on average 18.666666666666668) internal successors, (280), 15 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:46,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:46,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:46,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:46,990 INFO L124 PetriNetUnfolderBase]: 494/909 cut-off events. [2023-11-29 06:39:46,990 INFO L125 PetriNetUnfolderBase]: For 14789/14793 co-relation queries the response was YES. [2023-11-29 06:39:46,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6963 conditions, 909 events. 494/909 cut-off events. For 14789/14793 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4418 event pairs, 56 based on Foata normal form. 6/915 useless extension candidates. Maximal degree in co-relation 6886. Up to 334 conditions per place. [2023-11-29 06:39:47,001 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 131 selfloop transitions, 137 changer transitions 6/280 dead transitions. [2023-11-29 06:39:47,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 280 transitions, 4671 flow [2023-11-29 06:39:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:39:47,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 06:39:47,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 341 transitions. [2023-11-29 06:39:47,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2023-11-29 06:39:47,002 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 341 transitions. [2023-11-29 06:39:47,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 341 transitions. [2023-11-29 06:39:47,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:47,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 341 transitions. [2023-11-29 06:39:47,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 21.3125) internal successors, (341), 16 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:47,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 33.0) internal successors, (561), 17 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:47,005 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 33.0) internal successors, (561), 17 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:47,005 INFO L175 Difference]: Start difference. First operand has 184 places, 231 transitions, 3391 flow. Second operand 16 states and 341 transitions. [2023-11-29 06:39:47,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 280 transitions, 4671 flow [2023-11-29 06:39:47,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 280 transitions, 4161 flow, removed 237 selfloop flow, removed 4 redundant places. [2023-11-29 06:39:47,081 INFO L231 Difference]: Finished difference. Result has 201 places, 250 transitions, 3722 flow [2023-11-29 06:39:47,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3722, PETRI_PLACES=201, PETRI_TRANSITIONS=250} [2023-11-29 06:39:47,082 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 166 predicate places. [2023-11-29 06:39:47,082 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 250 transitions, 3722 flow [2023-11-29 06:39:47,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.666666666666668) internal successors, (280), 15 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:47,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:47,082 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:47,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 06:39:47,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 06:39:47,282 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:47,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:47,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1805774115, now seen corresponding path program 17 times [2023-11-29 06:39:47,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:47,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736228919] [2023-11-29 06:39:47,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:47,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:47,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:47,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736228919] [2023-11-29 06:39:47,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736228919] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:47,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010319460] [2023-11-29 06:39:47,374 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:39:47,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:47,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:47,377 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:47,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 06:39:47,476 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:39:47,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:47,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:47,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:47,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:47,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:47,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:47,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010319460] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:47,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:47,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-29 06:39:47,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107453327] [2023-11-29 06:39:47,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:47,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:39:47,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:47,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:39:47,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:39:47,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:47,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 250 transitions, 3722 flow. Second operand has 15 states, 15 states have (on average 19.066666666666666) internal successors, (286), 15 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:47,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:47,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:47,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:48,224 INFO L124 PetriNetUnfolderBase]: 588/1085 cut-off events. [2023-11-29 06:39:48,225 INFO L125 PetriNetUnfolderBase]: For 19355/19357 co-relation queries the response was YES. [2023-11-29 06:39:48,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8199 conditions, 1085 events. 588/1085 cut-off events. For 19355/19357 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5551 event pairs, 41 based on Foata normal form. 8/1093 useless extension candidates. Maximal degree in co-relation 8115. Up to 323 conditions per place. [2023-11-29 06:39:48,237 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 164 selfloop transitions, 168 changer transitions 0/338 dead transitions. [2023-11-29 06:39:48,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 338 transitions, 5514 flow [2023-11-29 06:39:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 06:39:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 06:39:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 490 transitions. [2023-11-29 06:39:48,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6455862977602108 [2023-11-29 06:39:48,239 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 490 transitions. [2023-11-29 06:39:48,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 490 transitions. [2023-11-29 06:39:48,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:48,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 490 transitions. [2023-11-29 06:39:48,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 21.304347826086957) internal successors, (490), 23 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:48,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 33.0) internal successors, (792), 24 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:48,241 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 33.0) internal successors, (792), 24 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:48,242 INFO L175 Difference]: Start difference. First operand has 201 places, 250 transitions, 3722 flow. Second operand 23 states and 490 transitions. [2023-11-29 06:39:48,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 338 transitions, 5514 flow [2023-11-29 06:39:48,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 338 transitions, 5291 flow, removed 42 selfloop flow, removed 8 redundant places. [2023-11-29 06:39:48,340 INFO L231 Difference]: Finished difference. Result has 219 places, 300 transitions, 4870 flow [2023-11-29 06:39:48,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3534, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4870, PETRI_PLACES=219, PETRI_TRANSITIONS=300} [2023-11-29 06:39:48,341 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 184 predicate places. [2023-11-29 06:39:48,341 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 300 transitions, 4870 flow [2023-11-29 06:39:48,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 19.066666666666666) internal successors, (286), 15 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:48,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:48,341 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:48,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 06:39:48,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:48,542 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:48,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:48,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1534967108, now seen corresponding path program 18 times [2023-11-29 06:39:48,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:48,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200751582] [2023-11-29 06:39:48,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:48,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:48,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:48,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:48,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200751582] [2023-11-29 06:39:48,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200751582] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:48,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534377522] [2023-11-29 06:39:48,630 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:39:48,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:48,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:48,631 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:48,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 06:39:48,713 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 06:39:48,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:48,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:48,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:48,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:48,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534377522] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:48,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:48,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-29 06:39:48,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791776423] [2023-11-29 06:39:48,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:48,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:39:48,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:48,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:39:48,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:39:48,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:48,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 300 transitions, 4870 flow. Second operand has 15 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:48,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:48,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:48,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:49,244 INFO L124 PetriNetUnfolderBase]: 614/1120 cut-off events. [2023-11-29 06:39:49,244 INFO L125 PetriNetUnfolderBase]: For 24130/24130 co-relation queries the response was YES. [2023-11-29 06:39:49,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9292 conditions, 1120 events. 614/1120 cut-off events. For 24130/24130 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5726 event pairs, 36 based on Foata normal form. 15/1134 useless extension candidates. Maximal degree in co-relation 9202. Up to 634 conditions per place. [2023-11-29 06:39:49,258 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 251 selfloop transitions, 88 changer transitions 6/351 dead transitions. [2023-11-29 06:39:49,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 351 transitions, 6513 flow [2023-11-29 06:39:49,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:39:49,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 06:39:49,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 368 transitions. [2023-11-29 06:39:49,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6559714795008913 [2023-11-29 06:39:49,259 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 368 transitions. [2023-11-29 06:39:49,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 368 transitions. [2023-11-29 06:39:49,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:49,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 368 transitions. [2023-11-29 06:39:49,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 21.647058823529413) internal successors, (368), 17 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) [2023-11-29 06:39:49,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:49,261 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:49,261 INFO L175 Difference]: Start difference. First operand has 219 places, 300 transitions, 4870 flow. Second operand 17 states and 368 transitions. [2023-11-29 06:39:49,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 351 transitions, 6513 flow [2023-11-29 06:39:49,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 351 transitions, 6312 flow, removed 57 selfloop flow, removed 10 redundant places. [2023-11-29 06:39:49,398 INFO L231 Difference]: Finished difference. Result has 229 places, 316 transitions, 5507 flow [2023-11-29 06:39:49,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4657, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5507, PETRI_PLACES=229, PETRI_TRANSITIONS=316} [2023-11-29 06:39:49,399 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 194 predicate places. [2023-11-29 06:39:49,399 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 316 transitions, 5507 flow [2023-11-29 06:39:49,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:49,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:49,399 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:49,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 06:39:49,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:49,599 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:49,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:49,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1257062953, now seen corresponding path program 19 times [2023-11-29 06:39:49,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:49,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356352187] [2023-11-29 06:39:49,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:49,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:49,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:49,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356352187] [2023-11-29 06:39:49,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356352187] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:49,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420722526] [2023-11-29 06:39:49,682 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:39:49,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:49,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:49,684 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:49,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 06:39:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:49,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:49,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:49,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:49,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:49,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420722526] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:49,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:49,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-29 06:39:49,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458522613] [2023-11-29 06:39:49,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:49,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:39:49,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:49,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:39:49,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:39:49,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:49,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 316 transitions, 5507 flow. Second operand has 15 states, 15 states have (on average 18.666666666666668) internal successors, (280), 15 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:49,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:49,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:49,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:50,318 INFO L124 PetriNetUnfolderBase]: 680/1211 cut-off events. [2023-11-29 06:39:50,318 INFO L125 PetriNetUnfolderBase]: For 35836/35836 co-relation queries the response was YES. [2023-11-29 06:39:50,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10969 conditions, 1211 events. 680/1211 cut-off events. For 35836/35836 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6089 event pairs, 147 based on Foata normal form. 10/1220 useless extension candidates. Maximal degree in co-relation 10874. Up to 935 conditions per place. [2023-11-29 06:39:50,336 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 298 selfloop transitions, 71 changer transitions 4/379 dead transitions. [2023-11-29 06:39:50,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 379 transitions, 7869 flow [2023-11-29 06:39:50,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:39:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 06:39:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 340 transitions. [2023-11-29 06:39:50,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2023-11-29 06:39:50,338 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 340 transitions. [2023-11-29 06:39:50,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 340 transitions. [2023-11-29 06:39:50,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:50,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 340 transitions. [2023-11-29 06:39:50,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 21.25) internal successors, (340), 16 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:50,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 33.0) internal successors, (561), 17 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:50,340 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 33.0) internal successors, (561), 17 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:50,340 INFO L175 Difference]: Start difference. First operand has 229 places, 316 transitions, 5507 flow. Second operand 16 states and 340 transitions. [2023-11-29 06:39:50,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 379 transitions, 7869 flow [2023-11-29 06:39:50,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 379 transitions, 6838 flow, removed 453 selfloop flow, removed 12 redundant places. [2023-11-29 06:39:50,546 INFO L231 Difference]: Finished difference. Result has 237 places, 354 transitions, 6088 flow [2023-11-29 06:39:50,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4834, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6088, PETRI_PLACES=237, PETRI_TRANSITIONS=354} [2023-11-29 06:39:50,546 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 202 predicate places. [2023-11-29 06:39:50,546 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 354 transitions, 6088 flow [2023-11-29 06:39:50,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.666666666666668) internal successors, (280), 15 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:50,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:50,547 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:50,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 06:39:50,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 06:39:50,747 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:50,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:50,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1064695015, now seen corresponding path program 20 times [2023-11-29 06:39:50,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:50,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687658248] [2023-11-29 06:39:50,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:50,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:50,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:50,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687658248] [2023-11-29 06:39:50,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687658248] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:50,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753202406] [2023-11-29 06:39:50,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:39:50,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:50,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:50,806 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:50,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 06:39:50,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:39:50,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:50,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:50,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:50,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:50,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753202406] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:50,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:50,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-29 06:39:50,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166628755] [2023-11-29 06:39:50,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:50,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:39:50,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:50,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:39:50,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:39:50,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:50,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 354 transitions, 6088 flow. Second operand has 11 states, 11 states have (on average 19.0) internal successors, (209), 11 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:50,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:50,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:50,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:51,342 INFO L124 PetriNetUnfolderBase]: 696/1237 cut-off events. [2023-11-29 06:39:51,342 INFO L125 PetriNetUnfolderBase]: For 37096/37097 co-relation queries the response was YES. [2023-11-29 06:39:51,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10849 conditions, 1237 events. 696/1237 cut-off events. For 37096/37097 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6269 event pairs, 95 based on Foata normal form. 2/1238 useless extension candidates. Maximal degree in co-relation 10752. Up to 717 conditions per place. [2023-11-29 06:39:51,362 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 269 selfloop transitions, 99 changer transitions 5/379 dead transitions. [2023-11-29 06:39:51,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 379 transitions, 7274 flow [2023-11-29 06:39:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:39:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:39:51,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2023-11-29 06:39:51,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6796536796536796 [2023-11-29 06:39:51,363 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 157 transitions. [2023-11-29 06:39:51,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 157 transitions. [2023-11-29 06:39:51,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:51,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 157 transitions. [2023-11-29 06:39:51,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:51,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:51,364 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:51,364 INFO L175 Difference]: Start difference. First operand has 237 places, 354 transitions, 6088 flow. Second operand 7 states and 157 transitions. [2023-11-29 06:39:51,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 379 transitions, 7274 flow [2023-11-29 06:39:51,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 379 transitions, 6685 flow, removed 274 selfloop flow, removed 2 redundant places. [2023-11-29 06:39:51,638 INFO L231 Difference]: Finished difference. Result has 244 places, 358 transitions, 5921 flow [2023-11-29 06:39:51,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5500, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5921, PETRI_PLACES=244, PETRI_TRANSITIONS=358} [2023-11-29 06:39:51,639 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 209 predicate places. [2023-11-29 06:39:51,639 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 358 transitions, 5921 flow [2023-11-29 06:39:51,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.0) internal successors, (209), 11 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:51,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:51,639 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:51,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 06:39:51,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 06:39:51,840 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:51,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:51,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1485695399, now seen corresponding path program 21 times [2023-11-29 06:39:51,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:51,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091239837] [2023-11-29 06:39:51,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:51,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:51,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:51,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091239837] [2023-11-29 06:39:51,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091239837] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:51,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642098885] [2023-11-29 06:39:51,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:39:51,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:51,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:51,919 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:51,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 06:39:52,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 06:39:52,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:52,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:52,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:52,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:52,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:52,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642098885] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:52,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:52,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-11-29 06:39:52,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960558227] [2023-11-29 06:39:52,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:52,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:39:52,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:52,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:39:52,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:39:52,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:52,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 358 transitions, 5921 flow. Second operand has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:52,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:52,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:52,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:52,511 INFO L124 PetriNetUnfolderBase]: 726/1283 cut-off events. [2023-11-29 06:39:52,511 INFO L125 PetriNetUnfolderBase]: For 36262/36262 co-relation queries the response was YES. [2023-11-29 06:39:52,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11068 conditions, 1283 events. 726/1283 cut-off events. For 36262/36262 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6494 event pairs, 170 based on Foata normal form. 6/1288 useless extension candidates. Maximal degree in co-relation 10966. Up to 1036 conditions per place. [2023-11-29 06:39:52,525 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 326 selfloop transitions, 57 changer transitions 1/390 dead transitions. [2023-11-29 06:39:52,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 390 transitions, 7214 flow [2023-11-29 06:39:52,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:39:52,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 06:39:52,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 240 transitions. [2023-11-29 06:39:52,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6611570247933884 [2023-11-29 06:39:52,526 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 240 transitions. [2023-11-29 06:39:52,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 240 transitions. [2023-11-29 06:39:52,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:52,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 240 transitions. [2023-11-29 06:39:52,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.818181818181817) internal successors, (240), 11 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:52,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:52,527 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:52,527 INFO L175 Difference]: Start difference. First operand has 244 places, 358 transitions, 5921 flow. Second operand 11 states and 240 transitions. [2023-11-29 06:39:52,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 390 transitions, 7214 flow [2023-11-29 06:39:52,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 390 transitions, 7064 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-11-29 06:39:52,721 INFO L231 Difference]: Finished difference. Result has 249 places, 373 transitions, 6230 flow [2023-11-29 06:39:52,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5740, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6230, PETRI_PLACES=249, PETRI_TRANSITIONS=373} [2023-11-29 06:39:52,722 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 214 predicate places. [2023-11-29 06:39:52,722 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 373 transitions, 6230 flow [2023-11-29 06:39:52,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:52,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:52,723 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:52,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 06:39:52,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 06:39:52,923 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:52,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:52,923 INFO L85 PathProgramCache]: Analyzing trace with hash -304620407, now seen corresponding path program 22 times [2023-11-29 06:39:52,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:52,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092122549] [2023-11-29 06:39:52,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:52,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:52,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:52,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092122549] [2023-11-29 06:39:52,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092122549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:52,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944751511] [2023-11-29 06:39:52,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:39:52,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:52,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:52,985 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:52,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 06:39:53,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:39:53,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:53,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:53,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:53,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:53,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944751511] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:53,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:53,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-29 06:39:53,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208307106] [2023-11-29 06:39:53,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:53,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:39:53,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:53,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:39:53,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:39:53,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:53,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 373 transitions, 6230 flow. Second operand has 12 states, 12 states have (on average 19.0) internal successors, (228), 12 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:53,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:53,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:53,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:53,679 INFO L124 PetriNetUnfolderBase]: 758/1320 cut-off events. [2023-11-29 06:39:53,679 INFO L125 PetriNetUnfolderBase]: For 41274/41275 co-relation queries the response was YES. [2023-11-29 06:39:53,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11608 conditions, 1320 events. 758/1320 cut-off events. For 41274/41275 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6623 event pairs, 97 based on Foata normal form. 25/1344 useless extension candidates. Maximal degree in co-relation 11513. Up to 761 conditions per place. [2023-11-29 06:39:53,700 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 247 selfloop transitions, 164 changer transitions 0/417 dead transitions. [2023-11-29 06:39:53,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 417 transitions, 7870 flow [2023-11-29 06:39:53,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:39:53,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 06:39:53,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 348 transitions. [2023-11-29 06:39:53,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2023-11-29 06:39:53,702 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 348 transitions. [2023-11-29 06:39:53,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 348 transitions. [2023-11-29 06:39:53,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:53,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 348 transitions. [2023-11-29 06:39:53,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 21.75) internal successors, (348), 16 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:53,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 33.0) internal successors, (561), 17 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:53,704 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 33.0) internal successors, (561), 17 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:53,705 INFO L175 Difference]: Start difference. First operand has 249 places, 373 transitions, 6230 flow. Second operand 16 states and 348 transitions. [2023-11-29 06:39:53,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 417 transitions, 7870 flow [2023-11-29 06:39:53,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 417 transitions, 7726 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-11-29 06:39:53,900 INFO L231 Difference]: Finished difference. Result has 256 places, 391 transitions, 7111 flow [2023-11-29 06:39:53,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5901, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7111, PETRI_PLACES=256, PETRI_TRANSITIONS=391} [2023-11-29 06:39:53,900 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 221 predicate places. [2023-11-29 06:39:53,900 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 391 transitions, 7111 flow [2023-11-29 06:39:53,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.0) internal successors, (228), 12 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:53,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:53,901 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:53,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-29 06:39:54,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 06:39:54,102 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:54,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:54,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1950493295, now seen corresponding path program 23 times [2023-11-29 06:39:54,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:54,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076778782] [2023-11-29 06:39:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:54,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:54,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:54,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:54,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076778782] [2023-11-29 06:39:54,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076778782] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:54,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445144658] [2023-11-29 06:39:54,197 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:39:54,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:54,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:54,198 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:54,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 06:39:54,284 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:39:54,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:54,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:54,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:54,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:54,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:54,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445144658] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:54,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:54,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-29 06:39:54,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297940243] [2023-11-29 06:39:54,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:54,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:39:54,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:54,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:39:54,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:39:54,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:54,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 391 transitions, 7111 flow. Second operand has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:54,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:54,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:54,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:54,860 INFO L124 PetriNetUnfolderBase]: 754/1318 cut-off events. [2023-11-29 06:39:54,860 INFO L125 PetriNetUnfolderBase]: For 39107/39107 co-relation queries the response was YES. [2023-11-29 06:39:54,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12081 conditions, 1318 events. 754/1318 cut-off events. For 39107/39107 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6637 event pairs, 110 based on Foata normal form. 4/1321 useless extension candidates. Maximal degree in co-relation 11985. Up to 838 conditions per place. [2023-11-29 06:39:54,878 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 291 selfloop transitions, 108 changer transitions 3/408 dead transitions. [2023-11-29 06:39:54,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 408 transitions, 8194 flow [2023-11-29 06:39:54,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:39:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 06:39:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 236 transitions. [2023-11-29 06:39:54,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.650137741046832 [2023-11-29 06:39:54,879 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 236 transitions. [2023-11-29 06:39:54,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 236 transitions. [2023-11-29 06:39:54,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:54,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 236 transitions. [2023-11-29 06:39:54,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:54,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:54,881 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:54,881 INFO L175 Difference]: Start difference. First operand has 256 places, 391 transitions, 7111 flow. Second operand 11 states and 236 transitions. [2023-11-29 06:39:54,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 408 transitions, 8194 flow [2023-11-29 06:39:55,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 408 transitions, 7555 flow, removed 226 selfloop flow, removed 10 redundant places. [2023-11-29 06:39:55,208 INFO L231 Difference]: Finished difference. Result has 257 places, 389 transitions, 6683 flow [2023-11-29 06:39:55,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6462, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6683, PETRI_PLACES=257, PETRI_TRANSITIONS=389} [2023-11-29 06:39:55,209 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 222 predicate places. [2023-11-29 06:39:55,209 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 389 transitions, 6683 flow [2023-11-29 06:39:55,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:55,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:55,210 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:55,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 06:39:55,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-11-29 06:39:55,410 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:55,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:55,411 INFO L85 PathProgramCache]: Analyzing trace with hash -842592094, now seen corresponding path program 24 times [2023-11-29 06:39:55,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:55,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114181539] [2023-11-29 06:39:55,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:55,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:55,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:55,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114181539] [2023-11-29 06:39:55,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114181539] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:55,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877695157] [2023-11-29 06:39:55,499 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:39:55,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:55,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:55,500 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:55,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 06:39:55,596 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 06:39:55,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:55,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:55,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:55,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:55,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:39:55,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877695157] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:55,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:55,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-11-29 06:39:55,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2545355] [2023-11-29 06:39:55,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:55,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:39:55,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:55,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:39:55,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:39:55,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:55,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 389 transitions, 6683 flow. Second operand has 13 states, 13 states have (on average 18.923076923076923) internal successors, (246), 13 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:55,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:55,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:55,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:56,233 INFO L124 PetriNetUnfolderBase]: 784/1360 cut-off events. [2023-11-29 06:39:56,233 INFO L125 PetriNetUnfolderBase]: For 37385/37385 co-relation queries the response was YES. [2023-11-29 06:39:56,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11972 conditions, 1360 events. 784/1360 cut-off events. For 37385/37385 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6855 event pairs, 34 based on Foata normal form. 18/1377 useless extension candidates. Maximal degree in co-relation 11876. Up to 861 conditions per place. [2023-11-29 06:39:56,249 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 312 selfloop transitions, 118 changer transitions 0/436 dead transitions. [2023-11-29 06:39:56,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 436 transitions, 8100 flow [2023-11-29 06:39:56,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:39:56,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 06:39:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 367 transitions. [2023-11-29 06:39:56,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6541889483065954 [2023-11-29 06:39:56,251 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 367 transitions. [2023-11-29 06:39:56,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 367 transitions. [2023-11-29 06:39:56,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:56,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 367 transitions. [2023-11-29 06:39:56,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 21.58823529411765) internal successors, (367), 17 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:56,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:56,253 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:56,253 INFO L175 Difference]: Start difference. First operand has 257 places, 389 transitions, 6683 flow. Second operand 17 states and 367 transitions. [2023-11-29 06:39:56,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 436 transitions, 8100 flow [2023-11-29 06:39:56,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 436 transitions, 7836 flow, removed 25 selfloop flow, removed 9 redundant places. [2023-11-29 06:39:56,516 INFO L231 Difference]: Finished difference. Result has 269 places, 410 transitions, 7014 flow [2023-11-29 06:39:56,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6356, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7014, PETRI_PLACES=269, PETRI_TRANSITIONS=410} [2023-11-29 06:39:56,517 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 234 predicate places. [2023-11-29 06:39:56,517 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 410 transitions, 7014 flow [2023-11-29 06:39:56,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.923076923076923) internal successors, (246), 13 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:56,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:56,517 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:56,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-29 06:39:56,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-11-29 06:39:56,718 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:56,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:56,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1872943556, now seen corresponding path program 25 times [2023-11-29 06:39:56,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:56,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199980638] [2023-11-29 06:39:56,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:56,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:56,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:56,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199980638] [2023-11-29 06:39:56,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199980638] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:56,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293556029] [2023-11-29 06:39:56,801 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:39:56,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:56,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:56,802 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:56,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 06:39:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:56,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:56,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:56,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:56,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293556029] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:56,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:56,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-29 06:39:56,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460275970] [2023-11-29 06:39:56,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:56,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:39:56,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:56,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:39:56,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:39:56,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:56,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 410 transitions, 7014 flow. Second operand has 15 states, 15 states have (on average 18.8) internal successors, (282), 15 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:56,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:56,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:56,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:57,692 INFO L124 PetriNetUnfolderBase]: 815/1411 cut-off events. [2023-11-29 06:39:57,692 INFO L125 PetriNetUnfolderBase]: For 38838/38838 co-relation queries the response was YES. [2023-11-29 06:39:57,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12621 conditions, 1411 events. 815/1411 cut-off events. For 38838/38838 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7174 event pairs, 35 based on Foata normal form. 6/1416 useless extension candidates. Maximal degree in co-relation 12518. Up to 863 conditions per place. [2023-11-29 06:39:57,715 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 316 selfloop transitions, 138 changer transitions 0/460 dead transitions. [2023-11-29 06:39:57,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 460 transitions, 8642 flow [2023-11-29 06:39:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 06:39:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 06:39:57,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 482 transitions. [2023-11-29 06:39:57,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6350461133069829 [2023-11-29 06:39:57,717 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 482 transitions. [2023-11-29 06:39:57,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 482 transitions. [2023-11-29 06:39:57,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:57,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 482 transitions. [2023-11-29 06:39:57,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 20.956521739130434) internal successors, (482), 23 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:57,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 33.0) internal successors, (792), 24 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:57,719 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 33.0) internal successors, (792), 24 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:57,719 INFO L175 Difference]: Start difference. First operand has 269 places, 410 transitions, 7014 flow. Second operand 23 states and 482 transitions. [2023-11-29 06:39:57,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 460 transitions, 8642 flow [2023-11-29 06:39:57,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 460 transitions, 8366 flow, removed 82 selfloop flow, removed 7 redundant places. [2023-11-29 06:39:57,993 INFO L231 Difference]: Finished difference. Result has 288 places, 430 transitions, 7485 flow [2023-11-29 06:39:57,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6815, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=7485, PETRI_PLACES=288, PETRI_TRANSITIONS=430} [2023-11-29 06:39:57,993 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 253 predicate places. [2023-11-29 06:39:57,994 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 430 transitions, 7485 flow [2023-11-29 06:39:57,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.8) internal successors, (282), 15 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:57,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:57,994 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:57,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-29 06:39:58,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:58,195 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:58,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash 769152674, now seen corresponding path program 26 times [2023-11-29 06:39:58,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:58,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199875519] [2023-11-29 06:39:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:58,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:58,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:58,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:58,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199875519] [2023-11-29 06:39:58,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199875519] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:58,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318939500] [2023-11-29 06:39:58,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:39:58,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:58,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:58,264 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:58,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 06:39:58,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:39:58,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:58,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:58,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:58,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:58,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:58,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318939500] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:58,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:58,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-11-29 06:39:58,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729027608] [2023-11-29 06:39:58,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:58,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:39:58,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:58,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:39:58,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:39:58,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:58,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 430 transitions, 7485 flow. Second operand has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:58,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:58,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:58,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:58,969 INFO L124 PetriNetUnfolderBase]: 818/1448 cut-off events. [2023-11-29 06:39:58,970 INFO L125 PetriNetUnfolderBase]: For 40355/40355 co-relation queries the response was YES. [2023-11-29 06:39:58,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12827 conditions, 1448 events. 818/1448 cut-off events. For 40355/40355 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7704 event pairs, 48 based on Foata normal form. 9/1456 useless extension candidates. Maximal degree in co-relation 12720. Up to 855 conditions per place. [2023-11-29 06:39:58,996 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 329 selfloop transitions, 121 changer transitions 1/457 dead transitions. [2023-11-29 06:39:58,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 457 transitions, 8758 flow [2023-11-29 06:39:58,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:39:58,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 06:39:58,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 304 transitions. [2023-11-29 06:39:58,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.658008658008658 [2023-11-29 06:39:58,997 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 304 transitions. [2023-11-29 06:39:58,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 304 transitions. [2023-11-29 06:39:58,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:58,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 304 transitions. [2023-11-29 06:39:58,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 21.714285714285715) internal successors, (304), 14 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:58,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 33.0) internal successors, (495), 15 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:58,999 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 33.0) internal successors, (495), 15 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:58,999 INFO L175 Difference]: Start difference. First operand has 288 places, 430 transitions, 7485 flow. Second operand 14 states and 304 transitions. [2023-11-29 06:39:58,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 457 transitions, 8758 flow [2023-11-29 06:39:59,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 457 transitions, 8347 flow, removed 108 selfloop flow, removed 11 redundant places. [2023-11-29 06:39:59,250 INFO L231 Difference]: Finished difference. Result has 292 places, 431 transitions, 7342 flow [2023-11-29 06:39:59,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7108, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7342, PETRI_PLACES=292, PETRI_TRANSITIONS=431} [2023-11-29 06:39:59,251 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 257 predicate places. [2023-11-29 06:39:59,251 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 431 transitions, 7342 flow [2023-11-29 06:39:59,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:59,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:59,251 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:59,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-29 06:39:59,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:59,454 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:39:59,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:59,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1140767530, now seen corresponding path program 27 times [2023-11-29 06:39:59,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:59,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842591480] [2023-11-29 06:39:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:59,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:59,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:59,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842591480] [2023-11-29 06:39:59,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842591480] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:59,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896249980] [2023-11-29 06:39:59,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:39:59,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:59,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:59,521 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:59,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 06:39:59,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 06:39:59,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:59,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:39:59,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:59,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:59,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:59,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896249980] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:59,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:59,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-11-29 06:39:59,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004438780] [2023-11-29 06:39:59,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:59,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:39:59,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:59,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:39:59,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:39:59,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:39:59,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 431 transitions, 7342 flow. Second operand has 13 states, 13 states have (on average 19.0) internal successors, (247), 13 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:59,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:59,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:39:59,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:00,282 INFO L124 PetriNetUnfolderBase]: 872/1498 cut-off events. [2023-11-29 06:40:00,282 INFO L125 PetriNetUnfolderBase]: For 46656/46656 co-relation queries the response was YES. [2023-11-29 06:40:00,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13697 conditions, 1498 events. 872/1498 cut-off events. For 46656/46656 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7665 event pairs, 39 based on Foata normal form. 12/1509 useless extension candidates. Maximal degree in co-relation 13588. Up to 821 conditions per place. [2023-11-29 06:40:00,302 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 289 selfloop transitions, 194 changer transitions 0/489 dead transitions. [2023-11-29 06:40:00,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 489 transitions, 9501 flow [2023-11-29 06:40:00,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:40:00,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 06:40:00,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 368 transitions. [2023-11-29 06:40:00,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6559714795008913 [2023-11-29 06:40:00,303 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 368 transitions. [2023-11-29 06:40:00,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 368 transitions. [2023-11-29 06:40:00,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:00,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 368 transitions. [2023-11-29 06:40:00,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 21.647058823529413) internal successors, (368), 17 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) [2023-11-29 06:40:00,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:00,304 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:00,304 INFO L175 Difference]: Start difference. First operand has 292 places, 431 transitions, 7342 flow. Second operand 17 states and 368 transitions. [2023-11-29 06:40:00,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 489 transitions, 9501 flow [2023-11-29 06:40:00,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 489 transitions, 9340 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-11-29 06:40:00,571 INFO L231 Difference]: Finished difference. Result has 305 places, 467 transitions, 8788 flow [2023-11-29 06:40:00,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7189, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8788, PETRI_PLACES=305, PETRI_TRANSITIONS=467} [2023-11-29 06:40:00,572 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 270 predicate places. [2023-11-29 06:40:00,572 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 467 transitions, 8788 flow [2023-11-29 06:40:00,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.0) internal successors, (247), 13 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:00,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:00,572 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:00,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 06:40:00,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:00,773 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:00,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash 856401707, now seen corresponding path program 28 times [2023-11-29 06:40:00,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:00,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118018137] [2023-11-29 06:40:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:00,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:00,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:00,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118018137] [2023-11-29 06:40:00,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118018137] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:00,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837981583] [2023-11-29 06:40:00,830 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:40:00,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:00,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:00,831 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:00,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 06:40:00,927 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:40:00,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:00,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:40:00,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:00,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:00,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:00,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837981583] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:00,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:00,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-29 06:40:00,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031736192] [2023-11-29 06:40:00,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:00,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:40:00,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:00,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:40:00,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:40:00,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:00,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 467 transitions, 8788 flow. Second operand has 12 states, 12 states have (on average 18.916666666666668) internal successors, (227), 12 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:00,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:00,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:00,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:01,536 INFO L124 PetriNetUnfolderBase]: 872/1500 cut-off events. [2023-11-29 06:40:01,536 INFO L125 PetriNetUnfolderBase]: For 50106/50106 co-relation queries the response was YES. [2023-11-29 06:40:01,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14326 conditions, 1500 events. 872/1500 cut-off events. For 50106/50106 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7678 event pairs, 121 based on Foata normal form. 4/1503 useless extension candidates. Maximal degree in co-relation 14211. Up to 910 conditions per place. [2023-11-29 06:40:01,556 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 306 selfloop transitions, 172 changer transitions 2/486 dead transitions. [2023-11-29 06:40:01,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 486 transitions, 10136 flow [2023-11-29 06:40:01,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:40:01,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 06:40:01,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 260 transitions. [2023-11-29 06:40:01,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6565656565656566 [2023-11-29 06:40:01,557 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 260 transitions. [2023-11-29 06:40:01,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 260 transitions. [2023-11-29 06:40:01,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:01,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 260 transitions. [2023-11-29 06:40:01,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.666666666666668) internal successors, (260), 12 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:01,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 33.0) internal successors, (429), 13 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:01,559 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 33.0) internal successors, (429), 13 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:01,559 INFO L175 Difference]: Start difference. First operand has 305 places, 467 transitions, 8788 flow. Second operand 12 states and 260 transitions. [2023-11-29 06:40:01,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 486 transitions, 10136 flow [2023-11-29 06:40:01,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 486 transitions, 9335 flow, removed 363 selfloop flow, removed 10 redundant places. [2023-11-29 06:40:01,919 INFO L231 Difference]: Finished difference. Result has 306 places, 466 transitions, 8503 flow [2023-11-29 06:40:01,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8090, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8503, PETRI_PLACES=306, PETRI_TRANSITIONS=466} [2023-11-29 06:40:01,920 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 271 predicate places. [2023-11-29 06:40:01,920 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 466 transitions, 8503 flow [2023-11-29 06:40:01,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.916666666666668) internal successors, (227), 12 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:01,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:01,921 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:01,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 06:40:02,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-29 06:40:02,121 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:02,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:02,121 INFO L85 PathProgramCache]: Analyzing trace with hash -239485074, now seen corresponding path program 29 times [2023-11-29 06:40:02,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:02,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126003551] [2023-11-29 06:40:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:02,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:02,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:02,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126003551] [2023-11-29 06:40:02,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126003551] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:02,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572449131] [2023-11-29 06:40:02,180 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:40:02,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:02,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:02,182 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:02,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 06:40:02,289 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:40:02,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:02,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:40:02,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:02,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:02,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572449131] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:02,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:02,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-29 06:40:02,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685134046] [2023-11-29 06:40:02,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:02,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:40:02,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:02,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:40:02,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:40:02,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:02,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 466 transitions, 8503 flow. Second operand has 13 states, 13 states have (on average 19.0) internal successors, (247), 13 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:02,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:02,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:02,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:02,968 INFO L124 PetriNetUnfolderBase]: 910/1551 cut-off events. [2023-11-29 06:40:02,968 INFO L125 PetriNetUnfolderBase]: For 35868/35868 co-relation queries the response was YES. [2023-11-29 06:40:02,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14070 conditions, 1551 events. 910/1551 cut-off events. For 35868/35868 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7947 event pairs, 47 based on Foata normal form. 4/1554 useless extension candidates. Maximal degree in co-relation 13957. Up to 990 conditions per place. [2023-11-29 06:40:02,988 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 371 selfloop transitions, 131 changer transitions 0/508 dead transitions. [2023-11-29 06:40:02,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 508 transitions, 10025 flow [2023-11-29 06:40:02,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:40:02,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 06:40:02,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 297 transitions. [2023-11-29 06:40:02,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2023-11-29 06:40:02,989 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 297 transitions. [2023-11-29 06:40:02,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 297 transitions. [2023-11-29 06:40:02,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:02,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 297 transitions. [2023-11-29 06:40:02,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 21.214285714285715) internal successors, (297), 14 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:02,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 33.0) internal successors, (495), 15 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:02,991 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 33.0) internal successors, (495), 15 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:02,991 INFO L175 Difference]: Start difference. First operand has 306 places, 466 transitions, 8503 flow. Second operand 14 states and 297 transitions. [2023-11-29 06:40:02,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 508 transitions, 10025 flow [2023-11-29 06:40:03,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 508 transitions, 9623 flow, removed 15 selfloop flow, removed 11 redundant places. [2023-11-29 06:40:03,262 INFO L231 Difference]: Finished difference. Result has 311 places, 488 transitions, 8759 flow [2023-11-29 06:40:03,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8062, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8759, PETRI_PLACES=311, PETRI_TRANSITIONS=488} [2023-11-29 06:40:03,263 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 276 predicate places. [2023-11-29 06:40:03,263 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 488 transitions, 8759 flow [2023-11-29 06:40:03,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.0) internal successors, (247), 13 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:03,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:03,264 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:03,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 06:40:03,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-29 06:40:03,464 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:03,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:03,464 INFO L85 PathProgramCache]: Analyzing trace with hash 800750724, now seen corresponding path program 30 times [2023-11-29 06:40:03,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:03,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855770402] [2023-11-29 06:40:03,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:03,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:03,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:03,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855770402] [2023-11-29 06:40:03,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855770402] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:03,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375208028] [2023-11-29 06:40:03,521 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:40:03,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:03,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:03,522 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:03,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 06:40:03,608 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 06:40:03,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:03,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:40:03,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:03,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:03,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375208028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:03,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:03,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-29 06:40:03,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661923977] [2023-11-29 06:40:03,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:03,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:40:03,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:03,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:40:03,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:40:03,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:03,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 488 transitions, 8759 flow. Second operand has 11 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:03,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:03,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:03,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:04,243 INFO L124 PetriNetUnfolderBase]: 956/1630 cut-off events. [2023-11-29 06:40:04,243 INFO L125 PetriNetUnfolderBase]: For 37199/37201 co-relation queries the response was YES. [2023-11-29 06:40:04,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14842 conditions, 1630 events. 956/1630 cut-off events. For 37199/37201 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8471 event pairs, 12 based on Foata normal form. 8/1637 useless extension candidates. Maximal degree in co-relation 14723. Up to 748 conditions per place. [2023-11-29 06:40:04,264 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 332 selfloop transitions, 200 changer transitions 0/538 dead transitions. [2023-11-29 06:40:04,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 538 transitions, 10644 flow [2023-11-29 06:40:04,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:40:04,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:40:04,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 220 transitions. [2023-11-29 06:40:04,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 06:40:04,265 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 220 transitions. [2023-11-29 06:40:04,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 220 transitions. [2023-11-29 06:40:04,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:04,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 220 transitions. [2023-11-29 06:40:04,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 22.0) internal successors, (220), 10 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:04,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:04,267 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:04,267 INFO L175 Difference]: Start difference. First operand has 311 places, 488 transitions, 8759 flow. Second operand 10 states and 220 transitions. [2023-11-29 06:40:04,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 538 transitions, 10644 flow [2023-11-29 06:40:04,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 538 transitions, 10432 flow, removed 36 selfloop flow, removed 7 redundant places. [2023-11-29 06:40:04,540 INFO L231 Difference]: Finished difference. Result has 317 places, 512 transitions, 9524 flow [2023-11-29 06:40:04,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8517, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9524, PETRI_PLACES=317, PETRI_TRANSITIONS=512} [2023-11-29 06:40:04,541 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 282 predicate places. [2023-11-29 06:40:04,541 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 512 transitions, 9524 flow [2023-11-29 06:40:04,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:04,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:04,541 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:04,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-29 06:40:04,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-29 06:40:04,741 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:04,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:04,742 INFO L85 PathProgramCache]: Analyzing trace with hash -503430098, now seen corresponding path program 31 times [2023-11-29 06:40:04,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:04,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731319202] [2023-11-29 06:40:04,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:04,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:04,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:04,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731319202] [2023-11-29 06:40:04,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731319202] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:04,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255499672] [2023-11-29 06:40:04,795 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:40:04,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:04,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:04,796 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:04,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 06:40:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:04,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:40:04,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:04,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:04,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255499672] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:04,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:04,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-29 06:40:04,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070462355] [2023-11-29 06:40:04,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:04,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:40:04,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:04,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:40:04,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:40:04,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:04,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 512 transitions, 9524 flow. Second operand has 12 states, 12 states have (on average 19.0) internal successors, (228), 12 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:04,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:04,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:04,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:05,559 INFO L124 PetriNetUnfolderBase]: 993/1688 cut-off events. [2023-11-29 06:40:05,560 INFO L125 PetriNetUnfolderBase]: For 40165/40165 co-relation queries the response was YES. [2023-11-29 06:40:05,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15645 conditions, 1688 events. 993/1688 cut-off events. For 40165/40165 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8774 event pairs, 66 based on Foata normal form. 6/1693 useless extension candidates. Maximal degree in co-relation 15523. Up to 880 conditions per place. [2023-11-29 06:40:05,583 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 363 selfloop transitions, 182 changer transitions 1/552 dead transitions. [2023-11-29 06:40:05,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 552 transitions, 11181 flow [2023-11-29 06:40:05,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:40:05,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:40:05,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 285 transitions. [2023-11-29 06:40:05,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6643356643356644 [2023-11-29 06:40:05,584 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 285 transitions. [2023-11-29 06:40:05,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 285 transitions. [2023-11-29 06:40:05,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:05,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 285 transitions. [2023-11-29 06:40:05,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 21.923076923076923) internal successors, (285), 13 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:05,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 33.0) internal successors, (462), 14 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:05,585 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 33.0) internal successors, (462), 14 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:05,586 INFO L175 Difference]: Start difference. First operand has 317 places, 512 transitions, 9524 flow. Second operand 13 states and 285 transitions. [2023-11-29 06:40:05,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 552 transitions, 11181 flow [2023-11-29 06:40:05,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 552 transitions, 10852 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-11-29 06:40:05,881 INFO L231 Difference]: Finished difference. Result has 324 places, 529 transitions, 10012 flow [2023-11-29 06:40:05,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9174, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10012, PETRI_PLACES=324, PETRI_TRANSITIONS=529} [2023-11-29 06:40:05,882 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 289 predicate places. [2023-11-29 06:40:05,882 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 529 transitions, 10012 flow [2023-11-29 06:40:05,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.0) internal successors, (228), 12 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:05,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:05,882 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:05,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 06:40:06,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-29 06:40:06,083 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:06,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:06,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1339946572, now seen corresponding path program 32 times [2023-11-29 06:40:06,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:06,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437964439] [2023-11-29 06:40:06,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:06,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:06,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:06,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437964439] [2023-11-29 06:40:06,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437964439] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:06,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142772402] [2023-11-29 06:40:06,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:40:06,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:06,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:06,149 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:06,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 06:40:06,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:40:06,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:06,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:40:06,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:06,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:06,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142772402] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:06,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:06,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-29 06:40:06,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577419190] [2023-11-29 06:40:06,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:06,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:40:06,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:06,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:40:06,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:40:06,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:06,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 529 transitions, 10012 flow. Second operand has 12 states, 12 states have (on average 19.0) internal successors, (228), 12 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:06,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:06,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:06,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:06,984 INFO L124 PetriNetUnfolderBase]: 987/1691 cut-off events. [2023-11-29 06:40:06,984 INFO L125 PetriNetUnfolderBase]: For 41659/41659 co-relation queries the response was YES. [2023-11-29 06:40:06,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15723 conditions, 1691 events. 987/1691 cut-off events. For 41659/41659 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8973 event pairs, 40 based on Foata normal form. 10/1700 useless extension candidates. Maximal degree in co-relation 15601. Up to 892 conditions per place. [2023-11-29 06:40:07,008 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 336 selfloop transitions, 210 changer transitions 0/552 dead transitions. [2023-11-29 06:40:07,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 552 transitions, 11278 flow [2023-11-29 06:40:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:40:07,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 06:40:07,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 344 transitions. [2023-11-29 06:40:07,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2023-11-29 06:40:07,009 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 344 transitions. [2023-11-29 06:40:07,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 344 transitions. [2023-11-29 06:40:07,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:07,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 344 transitions. [2023-11-29 06:40:07,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 21.5) internal successors, (344), 16 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:07,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 33.0) internal successors, (561), 17 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:07,010 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 33.0) internal successors, (561), 17 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:07,010 INFO L175 Difference]: Start difference. First operand has 324 places, 529 transitions, 10012 flow. Second operand 16 states and 344 transitions. [2023-11-29 06:40:07,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 552 transitions, 11278 flow [2023-11-29 06:40:07,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 552 transitions, 11079 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-11-29 06:40:07,321 INFO L231 Difference]: Finished difference. Result has 329 places, 529 transitions, 10258 flow [2023-11-29 06:40:07,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9654, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10258, PETRI_PLACES=329, PETRI_TRANSITIONS=529} [2023-11-29 06:40:07,321 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 294 predicate places. [2023-11-29 06:40:07,322 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 529 transitions, 10258 flow [2023-11-29 06:40:07,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.0) internal successors, (228), 12 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:07,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:07,322 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:07,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 06:40:07,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-11-29 06:40:07,522 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:07,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:07,523 INFO L85 PathProgramCache]: Analyzing trace with hash 442775061, now seen corresponding path program 33 times [2023-11-29 06:40:07,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:07,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425021991] [2023-11-29 06:40:07,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:07,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:07,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:07,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425021991] [2023-11-29 06:40:07,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425021991] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:07,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993750779] [2023-11-29 06:40:07,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:40:07,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:07,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:07,836 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:07,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 06:40:07,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 06:40:07,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:07,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:40:07,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:08,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:08,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:08,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:08,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993750779] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:08,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:08,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-29 06:40:08,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661812345] [2023-11-29 06:40:08,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:08,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 06:40:08,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:08,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 06:40:08,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:40:08,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:08,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 529 transitions, 10258 flow. Second operand has 19 states, 19 states have (on average 19.05263157894737) internal successors, (362), 19 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:08,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:08,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:08,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:09,463 INFO L124 PetriNetUnfolderBase]: 1156/2035 cut-off events. [2023-11-29 06:40:09,463 INFO L125 PetriNetUnfolderBase]: For 53639/53642 co-relation queries the response was YES. [2023-11-29 06:40:09,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19108 conditions, 2035 events. 1156/2035 cut-off events. For 53639/53642 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 11580 event pairs, 25 based on Foata normal form. 4/2039 useless extension candidates. Maximal degree in co-relation 18986. Up to 1466 conditions per place. [2023-11-29 06:40:09,491 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 533 selfloop transitions, 106 changer transitions 12/657 dead transitions. [2023-11-29 06:40:09,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 657 transitions, 13635 flow [2023-11-29 06:40:09,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:40:09,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 06:40:09,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 263 transitions. [2023-11-29 06:40:09,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7245179063360881 [2023-11-29 06:40:09,492 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 263 transitions. [2023-11-29 06:40:09,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 263 transitions. [2023-11-29 06:40:09,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:09,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 263 transitions. [2023-11-29 06:40:09,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 23.90909090909091) internal successors, (263), 11 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:09,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:09,493 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:09,493 INFO L175 Difference]: Start difference. First operand has 329 places, 529 transitions, 10258 flow. Second operand 11 states and 263 transitions. [2023-11-29 06:40:09,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 657 transitions, 13635 flow [2023-11-29 06:40:09,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 657 transitions, 13148 flow, removed 23 selfloop flow, removed 12 redundant places. [2023-11-29 06:40:09,872 INFO L231 Difference]: Finished difference. Result has 336 places, 589 transitions, 11357 flow [2023-11-29 06:40:09,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=9819, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11357, PETRI_PLACES=336, PETRI_TRANSITIONS=589} [2023-11-29 06:40:09,873 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 301 predicate places. [2023-11-29 06:40:09,873 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 589 transitions, 11357 flow [2023-11-29 06:40:09,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 19.05263157894737) internal successors, (362), 19 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:09,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:09,873 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:09,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-29 06:40:10,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:10,074 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:10,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:10,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1792535975, now seen corresponding path program 34 times [2023-11-29 06:40:10,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:10,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845824031] [2023-11-29 06:40:10,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:10,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:10,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:10,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845824031] [2023-11-29 06:40:10,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845824031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:10,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535965128] [2023-11-29 06:40:10,402 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:40:10,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:10,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:10,403 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:10,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 06:40:10,493 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:40:10,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:10,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:40:10,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:10,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:10,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535965128] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:10,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:10,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2023-11-29 06:40:10,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039937570] [2023-11-29 06:40:10,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:10,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:40:10,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:40:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:40:10,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:10,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 589 transitions, 11357 flow. Second operand has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:10,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:10,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:10,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:11,917 INFO L124 PetriNetUnfolderBase]: 1162/2056 cut-off events. [2023-11-29 06:40:11,917 INFO L125 PetriNetUnfolderBase]: For 56281/56284 co-relation queries the response was YES. [2023-11-29 06:40:11,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19465 conditions, 2056 events. 1162/2056 cut-off events. For 56281/56284 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 11843 event pairs, 25 based on Foata normal form. 3/2059 useless extension candidates. Maximal degree in co-relation 19335. Up to 1596 conditions per place. [2023-11-29 06:40:11,945 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 527 selfloop transitions, 92 changer transitions 16/641 dead transitions. [2023-11-29 06:40:11,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 641 transitions, 13305 flow [2023-11-29 06:40:11,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:40:11,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 06:40:11,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 275 transitions. [2023-11-29 06:40:11,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2023-11-29 06:40:11,946 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 275 transitions. [2023-11-29 06:40:11,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 275 transitions. [2023-11-29 06:40:11,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:11,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 275 transitions. [2023-11-29 06:40:11,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 22.916666666666668) internal successors, (275), 12 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:11,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 33.0) internal successors, (429), 13 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:11,948 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 33.0) internal successors, (429), 13 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:11,948 INFO L175 Difference]: Start difference. First operand has 336 places, 589 transitions, 11357 flow. Second operand 12 states and 275 transitions. [2023-11-29 06:40:11,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 641 transitions, 13305 flow [2023-11-29 06:40:12,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 641 transitions, 12950 flow, removed 176 selfloop flow, removed 3 redundant places. [2023-11-29 06:40:12,442 INFO L231 Difference]: Finished difference. Result has 348 places, 596 transitions, 11605 flow [2023-11-29 06:40:12,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11070, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11605, PETRI_PLACES=348, PETRI_TRANSITIONS=596} [2023-11-29 06:40:12,443 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 313 predicate places. [2023-11-29 06:40:12,443 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 596 transitions, 11605 flow [2023-11-29 06:40:12,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:12,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:12,444 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:12,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-29 06:40:12,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:12,644 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:12,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:12,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1590627353, now seen corresponding path program 35 times [2023-11-29 06:40:12,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:12,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743370446] [2023-11-29 06:40:12,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:12,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:12,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:12,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743370446] [2023-11-29 06:40:12,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743370446] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:12,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426680932] [2023-11-29 06:40:12,965 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:40:12,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:12,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:12,966 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:12,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 06:40:13,092 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 06:40:13,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:13,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:40:13,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:13,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:13,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:13,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426680932] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:13,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:13,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-29 06:40:13,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725840878] [2023-11-29 06:40:13,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:13,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 06:40:13,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:13,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 06:40:13,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:40:13,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:13,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 596 transitions, 11605 flow. Second operand has 19 states, 19 states have (on average 18.94736842105263) internal successors, (360), 19 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:13,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:13,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:13,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:14,387 INFO L124 PetriNetUnfolderBase]: 1145/2023 cut-off events. [2023-11-29 06:40:14,387 INFO L125 PetriNetUnfolderBase]: For 50739/50744 co-relation queries the response was YES. [2023-11-29 06:40:14,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19040 conditions, 2023 events. 1145/2023 cut-off events. For 50739/50744 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 11605 event pairs, 24 based on Foata normal form. 3/2026 useless extension candidates. Maximal degree in co-relation 18906. Up to 1472 conditions per place. [2023-11-29 06:40:14,416 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 525 selfloop transitions, 107 changer transitions 4/642 dead transitions. [2023-11-29 06:40:14,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 642 transitions, 13425 flow [2023-11-29 06:40:14,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:40:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 06:40:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2023-11-29 06:40:14,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.734006734006734 [2023-11-29 06:40:14,417 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 218 transitions. [2023-11-29 06:40:14,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 218 transitions. [2023-11-29 06:40:14,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:14,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 218 transitions. [2023-11-29 06:40:14,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:14,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:14,454 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:14,454 INFO L175 Difference]: Start difference. First operand has 348 places, 596 transitions, 11605 flow. Second operand 9 states and 218 transitions. [2023-11-29 06:40:14,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 642 transitions, 13425 flow [2023-11-29 06:40:14,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 642 transitions, 13038 flow, removed 130 selfloop flow, removed 6 redundant places. [2023-11-29 06:40:14,969 INFO L231 Difference]: Finished difference. Result has 350 places, 600 transitions, 11606 flow [2023-11-29 06:40:14,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11232, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11606, PETRI_PLACES=350, PETRI_TRANSITIONS=600} [2023-11-29 06:40:14,970 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 315 predicate places. [2023-11-29 06:40:14,970 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 600 transitions, 11606 flow [2023-11-29 06:40:14,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.94736842105263) internal successors, (360), 19 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:14,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:14,970 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:14,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-11-29 06:40:15,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:15,171 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:15,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:15,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1537222921, now seen corresponding path program 36 times [2023-11-29 06:40:15,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:15,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870496727] [2023-11-29 06:40:15,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:15,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:15,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:15,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870496727] [2023-11-29 06:40:15,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870496727] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:15,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550085779] [2023-11-29 06:40:15,487 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:40:15,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:15,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:15,488 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:15,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 06:40:15,584 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 06:40:15,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:15,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:40:15,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:15,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:15,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:15,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550085779] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:15,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:15,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-11-29 06:40:15,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137416588] [2023-11-29 06:40:15,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:15,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 06:40:15,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:15,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 06:40:15,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:40:15,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:15,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 600 transitions, 11606 flow. Second operand has 17 states, 17 states have (on average 19.058823529411764) internal successors, (324), 17 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:15,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:15,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:15,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:16,905 INFO L124 PetriNetUnfolderBase]: 1143/2013 cut-off events. [2023-11-29 06:40:16,905 INFO L125 PetriNetUnfolderBase]: For 51193/51197 co-relation queries the response was YES. [2023-11-29 06:40:16,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18702 conditions, 2013 events. 1143/2013 cut-off events. For 51193/51197 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 11498 event pairs, 24 based on Foata normal form. 3/2016 useless extension candidates. Maximal degree in co-relation 18567. Up to 1524 conditions per place. [2023-11-29 06:40:16,933 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 525 selfloop transitions, 110 changer transitions 4/645 dead transitions. [2023-11-29 06:40:16,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 645 transitions, 13370 flow [2023-11-29 06:40:16,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:40:16,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 06:40:16,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 255 transitions. [2023-11-29 06:40:16,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7024793388429752 [2023-11-29 06:40:16,934 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 255 transitions. [2023-11-29 06:40:16,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 255 transitions. [2023-11-29 06:40:16,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:16,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 255 transitions. [2023-11-29 06:40:16,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 23.181818181818183) internal successors, (255), 11 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:16,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:16,935 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:16,935 INFO L175 Difference]: Start difference. First operand has 350 places, 600 transitions, 11606 flow. Second operand 11 states and 255 transitions. [2023-11-29 06:40:16,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 645 transitions, 13370 flow [2023-11-29 06:40:17,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 645 transitions, 13113 flow, removed 39 selfloop flow, removed 6 redundant places. [2023-11-29 06:40:17,369 INFO L231 Difference]: Finished difference. Result has 356 places, 608 transitions, 11822 flow [2023-11-29 06:40:17,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11355, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11822, PETRI_PLACES=356, PETRI_TRANSITIONS=608} [2023-11-29 06:40:17,370 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 321 predicate places. [2023-11-29 06:40:17,370 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 608 transitions, 11822 flow [2023-11-29 06:40:17,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.058823529411764) internal successors, (324), 17 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:17,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:17,370 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:17,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-29 06:40:17,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:17,571 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:17,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:17,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1964485711, now seen corresponding path program 37 times [2023-11-29 06:40:17,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:17,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442091442] [2023-11-29 06:40:17,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:17,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:17,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:17,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442091442] [2023-11-29 06:40:17,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442091442] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:17,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283742051] [2023-11-29 06:40:17,893 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:40:17,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:17,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:17,894 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:17,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-29 06:40:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:17,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:40:17,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:18,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:18,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:18,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283742051] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:18,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:18,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 14 [2023-11-29 06:40:18,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159214367] [2023-11-29 06:40:18,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:18,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:40:18,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:18,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:40:18,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:40:18,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:18,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 608 transitions, 11822 flow. Second operand has 15 states, 15 states have (on average 19.4) internal successors, (291), 15 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:18,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:18,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:18,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:19,258 INFO L124 PetriNetUnfolderBase]: 1166/2067 cut-off events. [2023-11-29 06:40:19,258 INFO L125 PetriNetUnfolderBase]: For 54703/54705 co-relation queries the response was YES. [2023-11-29 06:40:19,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19287 conditions, 2067 events. 1166/2067 cut-off events. For 54703/54705 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 11938 event pairs, 33 based on Foata normal form. 1/2068 useless extension candidates. Maximal degree in co-relation 19150. Up to 1735 conditions per place. [2023-11-29 06:40:19,285 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 566 selfloop transitions, 70 changer transitions 4/646 dead transitions. [2023-11-29 06:40:19,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 646 transitions, 13550 flow [2023-11-29 06:40:19,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:40:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:40:19,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2023-11-29 06:40:19,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2023-11-29 06:40:19,286 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 187 transitions. [2023-11-29 06:40:19,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 187 transitions. [2023-11-29 06:40:19,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:19,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 187 transitions. [2023-11-29 06:40:19,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:19,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:19,287 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:19,287 INFO L175 Difference]: Start difference. First operand has 356 places, 608 transitions, 11822 flow. Second operand 8 states and 187 transitions. [2023-11-29 06:40:19,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 646 transitions, 13550 flow [2023-11-29 06:40:19,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 646 transitions, 13309 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-11-29 06:40:19,758 INFO L231 Difference]: Finished difference. Result has 357 places, 624 transitions, 12136 flow [2023-11-29 06:40:19,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11585, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12136, PETRI_PLACES=357, PETRI_TRANSITIONS=624} [2023-11-29 06:40:19,759 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 322 predicate places. [2023-11-29 06:40:19,759 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 624 transitions, 12136 flow [2023-11-29 06:40:19,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 19.4) internal successors, (291), 15 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:19,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:19,759 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:19,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-11-29 06:40:19,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-11-29 06:40:19,960 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:19,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:19,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1257396205, now seen corresponding path program 38 times [2023-11-29 06:40:19,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:19,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051003137] [2023-11-29 06:40:19,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:19,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:20,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:20,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051003137] [2023-11-29 06:40:20,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051003137] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:20,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614774399] [2023-11-29 06:40:20,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:40:20,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:20,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:20,380 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:20,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-29 06:40:20,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:40:20,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:20,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:40:20,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:20,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:20,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614774399] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:20,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:20,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2023-11-29 06:40:20,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435963993] [2023-11-29 06:40:20,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:20,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:40:20,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:20,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:40:20,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:40:20,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:20,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 624 transitions, 12136 flow. Second operand has 18 states, 18 states have (on average 19.166666666666668) internal successors, (345), 18 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:20,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:20,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:20,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:21,874 INFO L124 PetriNetUnfolderBase]: 1205/2134 cut-off events. [2023-11-29 06:40:21,875 INFO L125 PetriNetUnfolderBase]: For 58053/58057 co-relation queries the response was YES. [2023-11-29 06:40:21,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19892 conditions, 2134 events. 1205/2134 cut-off events. For 58053/58057 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 12383 event pairs, 33 based on Foata normal form. 2/2136 useless extension candidates. Maximal degree in co-relation 19753. Up to 1740 conditions per place. [2023-11-29 06:40:21,907 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 573 selfloop transitions, 86 changer transitions 6/671 dead transitions. [2023-11-29 06:40:21,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 671 transitions, 14043 flow [2023-11-29 06:40:21,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:40:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:40:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2023-11-29 06:40:21,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7310606060606061 [2023-11-29 06:40:21,908 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 193 transitions. [2023-11-29 06:40:21,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 193 transitions. [2023-11-29 06:40:21,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:21,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 193 transitions. [2023-11-29 06:40:21,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 24.125) internal successors, (193), 8 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:21,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:21,908 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:21,908 INFO L175 Difference]: Start difference. First operand has 357 places, 624 transitions, 12136 flow. Second operand 8 states and 193 transitions. [2023-11-29 06:40:21,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 671 transitions, 14043 flow [2023-11-29 06:40:22,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 671 transitions, 13758 flow, removed 96 selfloop flow, removed 4 redundant places. [2023-11-29 06:40:22,477 INFO L231 Difference]: Finished difference. Result has 362 places, 640 transitions, 12413 flow [2023-11-29 06:40:22,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=11857, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12413, PETRI_PLACES=362, PETRI_TRANSITIONS=640} [2023-11-29 06:40:22,478 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 327 predicate places. [2023-11-29 06:40:22,478 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 640 transitions, 12413 flow [2023-11-29 06:40:22,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.166666666666668) internal successors, (345), 18 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:22,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:22,478 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:22,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-11-29 06:40:22,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-11-29 06:40:22,679 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:22,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:22,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1383099821, now seen corresponding path program 39 times [2023-11-29 06:40:22,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:22,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788773621] [2023-11-29 06:40:22,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:22,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:22,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:22,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788773621] [2023-11-29 06:40:22,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788773621] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:22,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594706012] [2023-11-29 06:40:22,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:40:22,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:22,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:22,887 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:22,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-29 06:40:22,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 06:40:22,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:22,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:40:22,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:23,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:23,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:23,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594706012] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:23,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:23,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2023-11-29 06:40:23,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987537173] [2023-11-29 06:40:23,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:23,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 06:40:23,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:23,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 06:40:23,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:40:23,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:23,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 640 transitions, 12413 flow. Second operand has 17 states, 17 states have (on average 19.41176470588235) internal successors, (330), 17 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:23,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:23,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:23,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:24,318 INFO L124 PetriNetUnfolderBase]: 1201/2122 cut-off events. [2023-11-29 06:40:24,318 INFO L125 PetriNetUnfolderBase]: For 56242/56246 co-relation queries the response was YES. [2023-11-29 06:40:24,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19710 conditions, 2122 events. 1201/2122 cut-off events. For 56242/56246 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 12284 event pairs, 32 based on Foata normal form. 2/2124 useless extension candidates. Maximal degree in co-relation 19569. Up to 1740 conditions per place. [2023-11-29 06:40:24,346 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 569 selfloop transitions, 85 changer transitions 5/665 dead transitions. [2023-11-29 06:40:24,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 665 transitions, 13898 flow [2023-11-29 06:40:24,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:40:24,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:40:24,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2023-11-29 06:40:24,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7196969696969697 [2023-11-29 06:40:24,348 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 190 transitions. [2023-11-29 06:40:24,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 190 transitions. [2023-11-29 06:40:24,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:24,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 190 transitions. [2023-11-29 06:40:24,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:24,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:24,349 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:24,349 INFO L175 Difference]: Start difference. First operand has 362 places, 640 transitions, 12413 flow. Second operand 8 states and 190 transitions. [2023-11-29 06:40:24,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 665 transitions, 13898 flow [2023-11-29 06:40:24,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 665 transitions, 13642 flow, removed 62 selfloop flow, removed 5 redundant places. [2023-11-29 06:40:24,884 INFO L231 Difference]: Finished difference. Result has 365 places, 642 transitions, 12433 flow [2023-11-29 06:40:24,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=12161, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12433, PETRI_PLACES=365, PETRI_TRANSITIONS=642} [2023-11-29 06:40:24,885 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 330 predicate places. [2023-11-29 06:40:24,885 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 642 transitions, 12433 flow [2023-11-29 06:40:24,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.41176470588235) internal successors, (330), 17 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:24,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:24,885 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:24,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-29 06:40:25,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:25,086 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:25,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:25,086 INFO L85 PathProgramCache]: Analyzing trace with hash 884985045, now seen corresponding path program 40 times [2023-11-29 06:40:25,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:25,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832863087] [2023-11-29 06:40:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:25,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:25,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:25,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832863087] [2023-11-29 06:40:25,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832863087] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:25,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889712279] [2023-11-29 06:40:25,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:40:25,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:25,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:25,326 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:25,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-29 06:40:25,422 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:40:25,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:25,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:40:25,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:25,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:25,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:25,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889712279] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:25,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:25,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2023-11-29 06:40:25,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741985129] [2023-11-29 06:40:25,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:25,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:40:25,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:25,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:40:25,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:40:25,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:25,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 642 transitions, 12433 flow. Second operand has 14 states, 14 states have (on average 19.285714285714285) internal successors, (270), 14 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:25,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:25,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:25,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:26,923 INFO L124 PetriNetUnfolderBase]: 1306/2352 cut-off events. [2023-11-29 06:40:26,923 INFO L125 PetriNetUnfolderBase]: For 63614/63619 co-relation queries the response was YES. [2023-11-29 06:40:26,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21967 conditions, 2352 events. 1306/2352 cut-off events. For 63614/63619 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 14315 event pairs, 39 based on Foata normal form. 4/2356 useless extension candidates. Maximal degree in co-relation 21825. Up to 1892 conditions per place. [2023-11-29 06:40:26,957 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 620 selfloop transitions, 94 changer transitions 22/742 dead transitions. [2023-11-29 06:40:26,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 742 transitions, 15579 flow [2023-11-29 06:40:26,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:40:26,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 06:40:26,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 276 transitions. [2023-11-29 06:40:26,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2023-11-29 06:40:26,958 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 276 transitions. [2023-11-29 06:40:26,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 276 transitions. [2023-11-29 06:40:26,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:26,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 276 transitions. [2023-11-29 06:40:26,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 23.0) internal successors, (276), 12 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:26,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 33.0) internal successors, (429), 13 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:26,959 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 33.0) internal successors, (429), 13 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:26,959 INFO L175 Difference]: Start difference. First operand has 365 places, 642 transitions, 12433 flow. Second operand 12 states and 276 transitions. [2023-11-29 06:40:26,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 742 transitions, 15579 flow [2023-11-29 06:40:27,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 742 transitions, 15405 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-11-29 06:40:27,531 INFO L231 Difference]: Finished difference. Result has 380 places, 689 transitions, 13755 flow [2023-11-29 06:40:27,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=12267, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13755, PETRI_PLACES=380, PETRI_TRANSITIONS=689} [2023-11-29 06:40:27,532 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 345 predicate places. [2023-11-29 06:40:27,532 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 689 transitions, 13755 flow [2023-11-29 06:40:27,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.285714285714285) internal successors, (270), 14 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:27,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:27,532 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:27,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-29 06:40:27,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-11-29 06:40:27,733 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:27,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:27,733 INFO L85 PathProgramCache]: Analyzing trace with hash 863978837, now seen corresponding path program 41 times [2023-11-29 06:40:27,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:27,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212247395] [2023-11-29 06:40:27,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:27,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:28,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:28,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212247395] [2023-11-29 06:40:28,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212247395] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:28,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590635673] [2023-11-29 06:40:28,011 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:40:28,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:28,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:28,011 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:28,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-29 06:40:28,110 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 06:40:28,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:28,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:40:28,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:28,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:28,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:28,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590635673] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:28,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:28,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-11-29 06:40:28,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835258462] [2023-11-29 06:40:28,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:28,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 06:40:28,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:28,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 06:40:28,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2023-11-29 06:40:28,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2023-11-29 06:40:28,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 689 transitions, 13755 flow. Second operand has 21 states, 21 states have (on average 15.333333333333334) internal successors, (322), 21 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:28,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:28,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2023-11-29 06:40:28,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:29,987 INFO L124 PetriNetUnfolderBase]: 1465/2591 cut-off events. [2023-11-29 06:40:29,987 INFO L125 PetriNetUnfolderBase]: For 83094/83094 co-relation queries the response was YES. [2023-11-29 06:40:30,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25025 conditions, 2591 events. 1465/2591 cut-off events. For 83094/83094 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 15661 event pairs, 60 based on Foata normal form. 1/2581 useless extension candidates. Maximal degree in co-relation 24874. Up to 2082 conditions per place. [2023-11-29 06:40:30,024 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 659 selfloop transitions, 117 changer transitions 5/785 dead transitions. [2023-11-29 06:40:30,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 785 transitions, 16891 flow [2023-11-29 06:40:30,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:40:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 06:40:30,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 242 transitions. [2023-11-29 06:40:30,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2023-11-29 06:40:30,025 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 242 transitions. [2023-11-29 06:40:30,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 242 transitions. [2023-11-29 06:40:30,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:30,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 242 transitions. [2023-11-29 06:40:30,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 20.166666666666668) internal successors, (242), 12 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:30,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 33.0) internal successors, (429), 13 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:30,027 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 33.0) internal successors, (429), 13 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:30,027 INFO L175 Difference]: Start difference. First operand has 380 places, 689 transitions, 13755 flow. Second operand 12 states and 242 transitions. [2023-11-29 06:40:30,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 785 transitions, 16891 flow [2023-11-29 06:40:30,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 785 transitions, 16305 flow, removed 293 selfloop flow, removed 2 redundant places. [2023-11-29 06:40:30,814 INFO L231 Difference]: Finished difference. Result has 393 places, 726 transitions, 14468 flow [2023-11-29 06:40:30,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=13245, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14468, PETRI_PLACES=393, PETRI_TRANSITIONS=726} [2023-11-29 06:40:30,815 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 358 predicate places. [2023-11-29 06:40:30,815 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 726 transitions, 14468 flow [2023-11-29 06:40:30,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 15.333333333333334) internal successors, (322), 21 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:30,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:30,815 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:30,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-11-29 06:40:31,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-11-29 06:40:31,016 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:31,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:31,016 INFO L85 PathProgramCache]: Analyzing trace with hash -727878847, now seen corresponding path program 42 times [2023-11-29 06:40:31,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:31,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694566257] [2023-11-29 06:40:31,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:31,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:31,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:31,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694566257] [2023-11-29 06:40:31,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694566257] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:31,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433981483] [2023-11-29 06:40:31,297 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:40:31,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:31,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:31,298 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:31,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-29 06:40:31,395 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 06:40:31,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:31,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:40:31,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:31,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:40:31,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:31,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:31,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433981483] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:31,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:31,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2023-11-29 06:40:31,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878178197] [2023-11-29 06:40:31,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:31,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:40:31,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:31,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:40:31,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:40:31,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:31,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 726 transitions, 14468 flow. Second operand has 18 states, 18 states have (on average 19.333333333333332) internal successors, (348), 18 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:31,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:31,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:31,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:32,843 INFO L124 PetriNetUnfolderBase]: 1362/2455 cut-off events. [2023-11-29 06:40:32,844 INFO L125 PetriNetUnfolderBase]: For 74022/74028 co-relation queries the response was YES. [2023-11-29 06:40:32,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23347 conditions, 2455 events. 1362/2455 cut-off events. For 74022/74028 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 15046 event pairs, 40 based on Foata normal form. 1/2456 useless extension candidates. Maximal degree in co-relation 23191. Up to 2148 conditions per place. [2023-11-29 06:40:32,877 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 677 selfloop transitions, 45 changer transitions 12/741 dead transitions. [2023-11-29 06:40:32,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 741 transitions, 16030 flow [2023-11-29 06:40:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:40:32,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:40:32,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2023-11-29 06:40:32,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7121212121212122 [2023-11-29 06:40:32,878 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 141 transitions. [2023-11-29 06:40:32,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 141 transitions. [2023-11-29 06:40:32,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:32,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 141 transitions. [2023-11-29 06:40:32,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:32,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:32,879 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:32,879 INFO L175 Difference]: Start difference. First operand has 393 places, 726 transitions, 14468 flow. Second operand 6 states and 141 transitions. [2023-11-29 06:40:32,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 741 transitions, 16030 flow [2023-11-29 06:40:33,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 741 transitions, 15697 flow, removed 132 selfloop flow, removed 3 redundant places. [2023-11-29 06:40:33,625 INFO L231 Difference]: Finished difference. Result has 396 places, 718 transitions, 14075 flow [2023-11-29 06:40:33,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=14137, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=681, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=14075, PETRI_PLACES=396, PETRI_TRANSITIONS=718} [2023-11-29 06:40:33,625 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 361 predicate places. [2023-11-29 06:40:33,626 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 718 transitions, 14075 flow [2023-11-29 06:40:33,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.333333333333332) internal successors, (348), 18 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:33,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:33,626 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:33,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-11-29 06:40:33,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-11-29 06:40:33,826 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:33,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:33,826 INFO L85 PathProgramCache]: Analyzing trace with hash -209106543, now seen corresponding path program 43 times [2023-11-29 06:40:33,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:33,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481470534] [2023-11-29 06:40:33,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:33,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:34,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:34,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:34,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481470534] [2023-11-29 06:40:34,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481470534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:34,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412874849] [2023-11-29 06:40:34,135 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:40:34,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:34,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:34,136 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:34,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-29 06:40:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:34,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:40:34,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:34,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:34,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412874849] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:34,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:34,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-11-29 06:40:34,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084126146] [2023-11-29 06:40:34,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:34,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 06:40:34,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:34,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 06:40:34,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:40:34,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:34,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 718 transitions, 14075 flow. Second operand has 17 states, 17 states have (on average 19.058823529411764) internal successors, (324), 17 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:34,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:34,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:34,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:36,066 INFO L124 PetriNetUnfolderBase]: 1349/2419 cut-off events. [2023-11-29 06:40:36,066 INFO L125 PetriNetUnfolderBase]: For 68344/68353 co-relation queries the response was YES. [2023-11-29 06:40:36,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22849 conditions, 2419 events. 1349/2419 cut-off events. For 68344/68353 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 14727 event pairs, 39 based on Foata normal form. 3/2422 useless extension candidates. Maximal degree in co-relation 22691. Up to 1950 conditions per place. [2023-11-29 06:40:36,103 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 640 selfloop transitions, 111 changer transitions 4/762 dead transitions. [2023-11-29 06:40:36,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 762 transitions, 16188 flow [2023-11-29 06:40:36,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:40:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 06:40:36,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 254 transitions. [2023-11-29 06:40:36,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.699724517906336 [2023-11-29 06:40:36,104 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 254 transitions. [2023-11-29 06:40:36,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 254 transitions. [2023-11-29 06:40:36,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:36,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 254 transitions. [2023-11-29 06:40:36,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 23.09090909090909) internal successors, (254), 11 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:36,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:36,105 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:36,105 INFO L175 Difference]: Start difference. First operand has 396 places, 718 transitions, 14075 flow. Second operand 11 states and 254 transitions. [2023-11-29 06:40:36,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 762 transitions, 16188 flow [2023-11-29 06:40:36,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 762 transitions, 16077 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-11-29 06:40:36,828 INFO L231 Difference]: Finished difference. Result has 402 places, 726 transitions, 14468 flow [2023-11-29 06:40:36,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=13974, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14468, PETRI_PLACES=402, PETRI_TRANSITIONS=726} [2023-11-29 06:40:36,829 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 367 predicate places. [2023-11-29 06:40:36,829 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 726 transitions, 14468 flow [2023-11-29 06:40:36,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.058823529411764) internal successors, (324), 17 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:36,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:36,830 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:36,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-11-29 06:40:37,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:37,030 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:37,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:37,030 INFO L85 PathProgramCache]: Analyzing trace with hash -618326251, now seen corresponding path program 44 times [2023-11-29 06:40:37,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:37,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88553479] [2023-11-29 06:40:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:37,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:37,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:37,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88553479] [2023-11-29 06:40:37,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88553479] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:37,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565894866] [2023-11-29 06:40:37,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:40:37,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:37,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:37,289 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:37,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-29 06:40:37,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:40:37,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:37,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:40:37,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:37,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:37,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565894866] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:37,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:37,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2023-11-29 06:40:37,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916423076] [2023-11-29 06:40:37,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:37,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:40:37,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:37,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:40:37,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:40:37,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:37,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 726 transitions, 14468 flow. Second operand has 16 states, 16 states have (on average 19.125) internal successors, (306), 16 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:37,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:37,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:37,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:39,019 INFO L124 PetriNetUnfolderBase]: 1382/2497 cut-off events. [2023-11-29 06:40:39,020 INFO L125 PetriNetUnfolderBase]: For 74908/74915 co-relation queries the response was YES. [2023-11-29 06:40:39,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23758 conditions, 2497 events. 1382/2497 cut-off events. For 74908/74915 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 15409 event pairs, 40 based on Foata normal form. 3/2500 useless extension candidates. Maximal degree in co-relation 23599. Up to 2127 conditions per place. [2023-11-29 06:40:39,053 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 683 selfloop transitions, 74 changer transitions 4/768 dead transitions. [2023-11-29 06:40:39,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 768 transitions, 16591 flow [2023-11-29 06:40:39,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:40:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 06:40:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2023-11-29 06:40:39,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2023-11-29 06:40:39,054 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 207 transitions. [2023-11-29 06:40:39,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 207 transitions. [2023-11-29 06:40:39,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:39,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 207 transitions. [2023-11-29 06:40:39,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:39,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:39,055 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:39,056 INFO L175 Difference]: Start difference. First operand has 402 places, 726 transitions, 14468 flow. Second operand 9 states and 207 transitions. [2023-11-29 06:40:39,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 768 transitions, 16591 flow [2023-11-29 06:40:39,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 768 transitions, 16264 flow, removed 80 selfloop flow, removed 7 redundant places. [2023-11-29 06:40:39,820 INFO L231 Difference]: Finished difference. Result has 406 places, 744 transitions, 14821 flow [2023-11-29 06:40:39,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=14145, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14821, PETRI_PLACES=406, PETRI_TRANSITIONS=744} [2023-11-29 06:40:39,821 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 371 predicate places. [2023-11-29 06:40:39,821 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 744 transitions, 14821 flow [2023-11-29 06:40:39,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.125) internal successors, (306), 16 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:39,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:39,821 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:39,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-11-29 06:40:40,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2023-11-29 06:40:40,022 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:40,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:40,022 INFO L85 PathProgramCache]: Analyzing trace with hash 332580019, now seen corresponding path program 45 times [2023-11-29 06:40:40,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:40,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784798979] [2023-11-29 06:40:40,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:40,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:40,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:40,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784798979] [2023-11-29 06:40:40,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784798979] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:40,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778634035] [2023-11-29 06:40:40,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:40:40,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:40,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:40,258 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:40,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-29 06:40:40,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 06:40:40,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:40,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:40:40,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:40,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:40,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778634035] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:40,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:40,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2023-11-29 06:40:40,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305653985] [2023-11-29 06:40:40,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:40,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:40:40,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:40,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:40:40,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:40:40,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:40,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 744 transitions, 14821 flow. Second operand has 18 states, 18 states have (on average 19.0) internal successors, (342), 18 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:40,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:40,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:40,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:41,928 INFO L124 PetriNetUnfolderBase]: 1429/2576 cut-off events. [2023-11-29 06:40:41,928 INFO L125 PetriNetUnfolderBase]: For 77750/77755 co-relation queries the response was YES. [2023-11-29 06:40:41,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24487 conditions, 2576 events. 1429/2576 cut-off events. For 77750/77755 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 15911 event pairs, 41 based on Foata normal form. 2/2578 useless extension candidates. Maximal degree in co-relation 24325. Up to 2135 conditions per place. [2023-11-29 06:40:41,966 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 692 selfloop transitions, 94 changer transitions 6/799 dead transitions. [2023-11-29 06:40:41,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 799 transitions, 17211 flow [2023-11-29 06:40:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:40:41,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 06:40:41,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2023-11-29 06:40:41,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7171717171717171 [2023-11-29 06:40:41,967 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 213 transitions. [2023-11-29 06:40:41,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 213 transitions. [2023-11-29 06:40:41,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:41,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 213 transitions. [2023-11-29 06:40:41,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.666666666666668) internal successors, (213), 9 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:41,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:41,968 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:41,968 INFO L175 Difference]: Start difference. First operand has 406 places, 744 transitions, 14821 flow. Second operand 9 states and 213 transitions. [2023-11-29 06:40:41,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 799 transitions, 17211 flow [2023-11-29 06:40:42,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 799 transitions, 16851 flow, removed 131 selfloop flow, removed 5 redundant places. [2023-11-29 06:40:42,751 INFO L231 Difference]: Finished difference. Result has 411 places, 765 transitions, 15228 flow [2023-11-29 06:40:42,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=14467, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15228, PETRI_PLACES=411, PETRI_TRANSITIONS=765} [2023-11-29 06:40:42,752 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 376 predicate places. [2023-11-29 06:40:42,752 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 765 transitions, 15228 flow [2023-11-29 06:40:42,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.0) internal successors, (342), 18 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:42,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:42,753 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:42,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-11-29 06:40:42,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2023-11-29 06:40:42,953 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:42,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:42,953 INFO L85 PathProgramCache]: Analyzing trace with hash -112809835, now seen corresponding path program 46 times [2023-11-29 06:40:42,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:42,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717993182] [2023-11-29 06:40:42,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:42,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:43,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:43,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:43,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717993182] [2023-11-29 06:40:43,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717993182] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:43,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32423567] [2023-11-29 06:40:43,234 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:40:43,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:43,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:43,235 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:43,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-29 06:40:43,344 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:40:43,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:43,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:40:43,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:43,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:43,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:43,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32423567] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:43,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:43,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2023-11-29 06:40:43,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423848481] [2023-11-29 06:40:43,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:43,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:40:43,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:43,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:40:43,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:40:43,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:43,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 765 transitions, 15228 flow. Second operand has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:43,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:43,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:43,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:44,869 INFO L124 PetriNetUnfolderBase]: 1423/2557 cut-off events. [2023-11-29 06:40:44,870 INFO L125 PetriNetUnfolderBase]: For 75285/75289 co-relation queries the response was YES. [2023-11-29 06:40:44,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24146 conditions, 2557 events. 1423/2557 cut-off events. For 75285/75289 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 15751 event pairs, 43 based on Foata normal form. 1/2558 useless extension candidates. Maximal degree in co-relation 23982. Up to 2135 conditions per place. [2023-11-29 06:40:44,910 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 688 selfloop transitions, 91 changer transitions 6/792 dead transitions. [2023-11-29 06:40:44,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 792 transitions, 17014 flow [2023-11-29 06:40:44,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:40:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:40:44,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2023-11-29 06:40:44,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7234848484848485 [2023-11-29 06:40:44,911 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 191 transitions. [2023-11-29 06:40:44,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 191 transitions. [2023-11-29 06:40:44,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:44,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 191 transitions. [2023-11-29 06:40:44,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:44,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:44,912 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:44,912 INFO L175 Difference]: Start difference. First operand has 411 places, 765 transitions, 15228 flow. Second operand 8 states and 191 transitions. [2023-11-29 06:40:44,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 792 transitions, 17014 flow [2023-11-29 06:40:45,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 792 transitions, 16754 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-11-29 06:40:45,841 INFO L231 Difference]: Finished difference. Result has 414 places, 767 transitions, 15243 flow [2023-11-29 06:40:45,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=14972, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=765, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15243, PETRI_PLACES=414, PETRI_TRANSITIONS=767} [2023-11-29 06:40:45,842 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 379 predicate places. [2023-11-29 06:40:45,842 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 767 transitions, 15243 flow [2023-11-29 06:40:45,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:45,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:45,842 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:45,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-11-29 06:40:46,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2023-11-29 06:40:46,043 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:46,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:46,043 INFO L85 PathProgramCache]: Analyzing trace with hash 738275221, now seen corresponding path program 47 times [2023-11-29 06:40:46,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:46,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087029605] [2023-11-29 06:40:46,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:46,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:46,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:46,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087029605] [2023-11-29 06:40:46,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087029605] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:46,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117820068] [2023-11-29 06:40:46,310 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:40:46,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:46,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:46,311 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:46,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-29 06:40:46,419 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 06:40:46,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:46,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:40:46,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:46,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:46,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:46,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:46,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117820068] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:46,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:46,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-29 06:40:46,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951487602] [2023-11-29 06:40:46,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:46,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 06:40:46,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:46,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 06:40:46,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:40:46,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:46,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 767 transitions, 15243 flow. Second operand has 19 states, 19 states have (on average 18.894736842105264) internal successors, (359), 19 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:46,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:46,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:46,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:48,111 INFO L124 PetriNetUnfolderBase]: 1418/2540 cut-off events. [2023-11-29 06:40:48,111 INFO L125 PetriNetUnfolderBase]: For 73110/73116 co-relation queries the response was YES. [2023-11-29 06:40:48,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24001 conditions, 2540 events. 1418/2540 cut-off events. For 73110/73116 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 15598 event pairs, 42 based on Foata normal form. 3/2543 useless extension candidates. Maximal degree in co-relation 23836. Up to 2017 conditions per place. [2023-11-29 06:40:48,149 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 680 selfloop transitions, 110 changer transitions 4/801 dead transitions. [2023-11-29 06:40:48,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 801 transitions, 17247 flow [2023-11-29 06:40:48,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:40:48,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:40:48,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 233 transitions. [2023-11-29 06:40:48,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.706060606060606 [2023-11-29 06:40:48,150 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 233 transitions. [2023-11-29 06:40:48,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 233 transitions. [2023-11-29 06:40:48,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:48,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 233 transitions. [2023-11-29 06:40:48,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 23.3) internal successors, (233), 10 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:48,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:48,151 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 33.0) internal successors, (363), 11 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:48,152 INFO L175 Difference]: Start difference. First operand has 414 places, 767 transitions, 15243 flow. Second operand 10 states and 233 transitions. [2023-11-29 06:40:48,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 801 transitions, 17247 flow [2023-11-29 06:40:48,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 801 transitions, 17061 flow, removed 24 selfloop flow, removed 5 redundant places. [2023-11-29 06:40:48,966 INFO L231 Difference]: Finished difference. Result has 420 places, 770 transitions, 15447 flow [2023-11-29 06:40:48,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=15063, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15447, PETRI_PLACES=420, PETRI_TRANSITIONS=770} [2023-11-29 06:40:48,966 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 385 predicate places. [2023-11-29 06:40:48,967 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 770 transitions, 15447 flow [2023-11-29 06:40:48,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.894736842105264) internal successors, (359), 19 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:48,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:48,967 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:48,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-29 06:40:49,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-11-29 06:40:49,167 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:49,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:49,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1412735605, now seen corresponding path program 48 times [2023-11-29 06:40:49,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:49,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740407238] [2023-11-29 06:40:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:49,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:49,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:49,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740407238] [2023-11-29 06:40:49,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740407238] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:49,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761639476] [2023-11-29 06:40:49,245 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:40:49,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:49,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:49,246 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:49,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-29 06:40:49,351 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 06:40:49,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:49,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:40:49,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:49,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:49,429 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:49,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761639476] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:49,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:49,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-11-29 06:40:49,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612389151] [2023-11-29 06:40:49,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:49,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:40:49,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:49,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:40:49,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:40:49,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:49,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 770 transitions, 15447 flow. Second operand has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:49,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:49,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:49,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:50,909 INFO L124 PetriNetUnfolderBase]: 1735/3169 cut-off events. [2023-11-29 06:40:50,910 INFO L125 PetriNetUnfolderBase]: For 95727/95740 co-relation queries the response was YES. [2023-11-29 06:40:50,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29376 conditions, 3169 events. 1735/3169 cut-off events. For 95727/95740 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 20651 event pairs, 299 based on Foata normal form. 3/3171 useless extension candidates. Maximal degree in co-relation 29209. Up to 1725 conditions per place. [2023-11-29 06:40:50,960 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 713 selfloop transitions, 245 changer transitions 12/977 dead transitions. [2023-11-29 06:40:50,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 977 transitions, 21249 flow [2023-11-29 06:40:50,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:40:50,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 06:40:50,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2023-11-29 06:40:50,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2023-11-29 06:40:50,961 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 207 transitions. [2023-11-29 06:40:50,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 207 transitions. [2023-11-29 06:40:50,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:50,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 207 transitions. [2023-11-29 06:40:50,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:50,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:50,962 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:50,962 INFO L175 Difference]: Start difference. First operand has 420 places, 770 transitions, 15447 flow. Second operand 9 states and 207 transitions. [2023-11-29 06:40:50,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 977 transitions, 21249 flow [2023-11-29 06:40:52,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 977 transitions, 20753 flow, removed 96 selfloop flow, removed 8 redundant places. [2023-11-29 06:40:52,088 INFO L231 Difference]: Finished difference. Result has 424 places, 856 transitions, 17701 flow [2023-11-29 06:40:52,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=15128, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17701, PETRI_PLACES=424, PETRI_TRANSITIONS=856} [2023-11-29 06:40:52,089 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 389 predicate places. [2023-11-29 06:40:52,090 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 856 transitions, 17701 flow [2023-11-29 06:40:52,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 14 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:52,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:52,090 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:52,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-29 06:40:52,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:52,290 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:52,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:52,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1717998722, now seen corresponding path program 49 times [2023-11-29 06:40:52,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:52,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433013776] [2023-11-29 06:40:52,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:52,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:52,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:52,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433013776] [2023-11-29 06:40:52,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433013776] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:52,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779844134] [2023-11-29 06:40:52,368 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:40:52,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:52,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:52,368 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:52,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-29 06:40:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:52,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:40:52,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:52,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:52,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:52,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779844134] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:52,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:52,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-11-29 06:40:52,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735468483] [2023-11-29 06:40:52,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:52,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:40:52,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:52,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:40:52,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:40:52,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:52,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 856 transitions, 17701 flow. Second operand has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 14 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:52,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:52,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:52,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:54,139 INFO L124 PetriNetUnfolderBase]: 1881/3427 cut-off events. [2023-11-29 06:40:54,139 INFO L125 PetriNetUnfolderBase]: For 106542/106548 co-relation queries the response was YES. [2023-11-29 06:40:54,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32399 conditions, 3427 events. 1881/3427 cut-off events. For 106542/106548 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 22558 event pairs, 73 based on Foata normal form. 13/3440 useless extension candidates. Maximal degree in co-relation 32228. Up to 1032 conditions per place. [2023-11-29 06:40:54,196 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 629 selfloop transitions, 425 changer transitions 0/1061 dead transitions. [2023-11-29 06:40:54,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 1061 transitions, 23519 flow [2023-11-29 06:40:54,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:40:54,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:40:54,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 295 transitions. [2023-11-29 06:40:54,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6876456876456877 [2023-11-29 06:40:54,197 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 295 transitions. [2023-11-29 06:40:54,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 295 transitions. [2023-11-29 06:40:54,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:54,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 295 transitions. [2023-11-29 06:40:54,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 22.692307692307693) internal successors, (295), 13 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:54,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 33.0) internal successors, (462), 14 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:54,198 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 33.0) internal successors, (462), 14 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:54,198 INFO L175 Difference]: Start difference. First operand has 424 places, 856 transitions, 17701 flow. Second operand 13 states and 295 transitions. [2023-11-29 06:40:54,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 1061 transitions, 23519 flow [2023-11-29 06:40:55,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 1061 transitions, 23135 flow, removed 54 selfloop flow, removed 7 redundant places. [2023-11-29 06:40:55,408 INFO L231 Difference]: Finished difference. Result has 433 places, 923 transitions, 20023 flow [2023-11-29 06:40:55,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=17319, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=856, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=358, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20023, PETRI_PLACES=433, PETRI_TRANSITIONS=923} [2023-11-29 06:40:55,409 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 398 predicate places. [2023-11-29 06:40:55,409 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 923 transitions, 20023 flow [2023-11-29 06:40:55,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 14 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:55,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:55,409 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:55,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-29 06:40:55,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:55,610 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:55,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:55,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1669000395, now seen corresponding path program 50 times [2023-11-29 06:40:55,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:55,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968029166] [2023-11-29 06:40:55,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:55,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:55,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:55,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:55,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968029166] [2023-11-29 06:40:55,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968029166] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:55,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564476377] [2023-11-29 06:40:55,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:40:55,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:55,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:55,688 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:55,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-29 06:40:55,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:40:55,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:55,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:40:55,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:55,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:55,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:55,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:55,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564476377] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:55,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:55,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-29 06:40:55,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243481517] [2023-11-29 06:40:55,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:55,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:40:55,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:55,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:40:55,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:40:55,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:55,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 923 transitions, 20023 flow. Second operand has 16 states, 16 states have (on average 19.0) internal successors, (304), 16 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:55,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:55,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:55,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:57,685 INFO L124 PetriNetUnfolderBase]: 1901/3508 cut-off events. [2023-11-29 06:40:57,685 INFO L125 PetriNetUnfolderBase]: For 122092/122100 co-relation queries the response was YES. [2023-11-29 06:40:57,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34289 conditions, 3508 events. 1901/3508 cut-off events. For 122092/122100 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 23655 event pairs, 357 based on Foata normal form. 12/3520 useless extension candidates. Maximal degree in co-relation 34115. Up to 2176 conditions per place. [2023-11-29 06:40:57,738 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 723 selfloop transitions, 303 changer transitions 11/1044 dead transitions. [2023-11-29 06:40:57,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 1044 transitions, 24484 flow [2023-11-29 06:40:57,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:40:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:40:57,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 329 transitions. [2023-11-29 06:40:57,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6646464646464646 [2023-11-29 06:40:57,739 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 329 transitions. [2023-11-29 06:40:57,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 329 transitions. [2023-11-29 06:40:57,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:57,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 329 transitions. [2023-11-29 06:40:57,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 21.933333333333334) internal successors, (329), 15 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:57,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 33.0) internal successors, (528), 16 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) [2023-11-29 06:40:57,740 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 33.0) internal successors, (528), 16 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) [2023-11-29 06:40:57,740 INFO L175 Difference]: Start difference. First operand has 433 places, 923 transitions, 20023 flow. Second operand 15 states and 329 transitions. [2023-11-29 06:40:57,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 1044 transitions, 24484 flow [2023-11-29 06:40:58,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 1044 transitions, 24145 flow, removed 79 selfloop flow, removed 3 redundant places. [2023-11-29 06:40:58,990 INFO L231 Difference]: Finished difference. Result has 448 places, 950 transitions, 21305 flow [2023-11-29 06:40:58,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=19685, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=923, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=21305, PETRI_PLACES=448, PETRI_TRANSITIONS=950} [2023-11-29 06:40:58,991 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 413 predicate places. [2023-11-29 06:40:58,991 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 950 transitions, 21305 flow [2023-11-29 06:40:58,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.0) internal successors, (304), 16 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:58,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:58,991 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:58,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-11-29 06:40:59,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-11-29 06:40:59,192 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:40:59,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:59,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1565117722, now seen corresponding path program 51 times [2023-11-29 06:40:59,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:59,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346267919] [2023-11-29 06:40:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:59,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:59,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:59,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:59,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346267919] [2023-11-29 06:40:59,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346267919] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:40:59,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834077435] [2023-11-29 06:40:59,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:40:59,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:59,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:59,273 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:59,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-29 06:40:59,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 06:40:59,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:40:59,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:40:59,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:59,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:59,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:40:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:59,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834077435] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:40:59,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:40:59,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-11-29 06:40:59,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884608293] [2023-11-29 06:40:59,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:40:59,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:40:59,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:59,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:40:59,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:40:59,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:40:59,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 950 transitions, 21305 flow. Second operand has 15 states, 15 states have (on average 18.866666666666667) internal successors, (283), 15 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:59,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:59,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:40:59,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:41:01,604 INFO L124 PetriNetUnfolderBase]: 2054/3784 cut-off events. [2023-11-29 06:41:01,604 INFO L125 PetriNetUnfolderBase]: For 146820/146830 co-relation queries the response was YES. [2023-11-29 06:41:01,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38161 conditions, 3784 events. 2054/3784 cut-off events. For 146820/146830 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 25713 event pairs, 100 based on Foata normal form. 26/3810 useless extension candidates. Maximal degree in co-relation 37983. Up to 1247 conditions per place. [2023-11-29 06:41:01,669 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 550 selfloop transitions, 526 changer transitions 0/1083 dead transitions. [2023-11-29 06:41:01,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 1083 transitions, 26505 flow [2023-11-29 06:41:01,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 06:41:01,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 06:41:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 522 transitions. [2023-11-29 06:41:01,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2023-11-29 06:41:01,671 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 522 transitions. [2023-11-29 06:41:01,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 522 transitions. [2023-11-29 06:41:01,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:41:01,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 522 transitions. [2023-11-29 06:41:01,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 21.75) internal successors, (522), 24 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:01,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 33.0) internal successors, (825), 25 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:01,673 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 33.0) internal successors, (825), 25 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:01,673 INFO L175 Difference]: Start difference. First operand has 448 places, 950 transitions, 21305 flow. Second operand 24 states and 522 transitions. [2023-11-29 06:41:01,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 1083 transitions, 26505 flow [2023-11-29 06:41:03,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 1083 transitions, 25260 flow, removed 206 selfloop flow, removed 9 redundant places. [2023-11-29 06:41:03,338 INFO L231 Difference]: Finished difference. Result has 469 places, 1042 transitions, 24402 flow [2023-11-29 06:41:03,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=20086, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=950, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=448, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=24402, PETRI_PLACES=469, PETRI_TRANSITIONS=1042} [2023-11-29 06:41:03,339 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 434 predicate places. [2023-11-29 06:41:03,339 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 1042 transitions, 24402 flow [2023-11-29 06:41:03,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.866666666666667) internal successors, (283), 15 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:03,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:41:03,339 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:03,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-11-29 06:41:03,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-11-29 06:41:03,540 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:41:03,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:03,540 INFO L85 PathProgramCache]: Analyzing trace with hash 986932138, now seen corresponding path program 52 times [2023-11-29 06:41:03,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:03,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041691517] [2023-11-29 06:41:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:03,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:03,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:03,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041691517] [2023-11-29 06:41:03,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041691517] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:41:03,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653327226] [2023-11-29 06:41:03,640 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:41:03,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:03,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:03,641 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:03,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-11-29 06:41:03,759 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:41:03,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:41:03,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:41:03,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:03,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:41:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:03,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653327226] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:41:03,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:41:03,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-11-29 06:41:03,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60598666] [2023-11-29 06:41:03,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:41:03,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:41:03,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:03,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:41:03,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:41:03,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:41:03,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 1042 transitions, 24402 flow. Second operand has 15 states, 15 states have (on average 18.8) internal successors, (282), 15 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:03,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:41:03,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:41:03,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:41:06,319 INFO L124 PetriNetUnfolderBase]: 2052/3809 cut-off events. [2023-11-29 06:41:06,320 INFO L125 PetriNetUnfolderBase]: For 143324/143336 co-relation queries the response was YES. [2023-11-29 06:41:06,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39066 conditions, 3809 events. 2052/3809 cut-off events. For 143324/143336 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 26224 event pairs, 219 based on Foata normal form. 8/3817 useless extension candidates. Maximal degree in co-relation 38880. Up to 1302 conditions per place. [2023-11-29 06:41:06,381 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 606 selfloop transitions, 460 changer transitions 4/1077 dead transitions. [2023-11-29 06:41:06,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1077 transitions, 26890 flow [2023-11-29 06:41:06,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 06:41:06,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 06:41:06,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 410 transitions. [2023-11-29 06:41:06,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6539074960127592 [2023-11-29 06:41:06,382 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 410 transitions. [2023-11-29 06:41:06,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 410 transitions. [2023-11-29 06:41:06,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:41:06,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 410 transitions. [2023-11-29 06:41:06,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 21.57894736842105) internal successors, (410), 19 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:06,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 33.0) internal successors, (660), 20 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:06,383 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 33.0) internal successors, (660), 20 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:06,383 INFO L175 Difference]: Start difference. First operand has 469 places, 1042 transitions, 24402 flow. Second operand 19 states and 410 transitions. [2023-11-29 06:41:06,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 1077 transitions, 26890 flow [2023-11-29 06:41:07,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1077 transitions, 24903 flow, removed 759 selfloop flow, removed 12 redundant places. [2023-11-29 06:41:07,983 INFO L231 Difference]: Finished difference. Result has 477 places, 1040 transitions, 23355 flow [2023-11-29 06:41:07,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=22416, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1042, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=459, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=23355, PETRI_PLACES=477, PETRI_TRANSITIONS=1040} [2023-11-29 06:41:07,984 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 442 predicate places. [2023-11-29 06:41:07,984 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 1040 transitions, 23355 flow [2023-11-29 06:41:07,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.8) internal successors, (282), 15 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:07,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:41:07,985 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:07,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2023-11-29 06:41:08,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-11-29 06:41:08,185 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:41:08,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:08,186 INFO L85 PathProgramCache]: Analyzing trace with hash -448012390, now seen corresponding path program 53 times [2023-11-29 06:41:08,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:08,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862928754] [2023-11-29 06:41:08,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:08,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:08,268 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:08,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:08,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862928754] [2023-11-29 06:41:08,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862928754] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:41:08,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588005021] [2023-11-29 06:41:08,269 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:41:08,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:08,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:08,270 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:08,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-11-29 06:41:08,376 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 06:41:08,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:41:08,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:41:08,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:08,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:41:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:08,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588005021] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:41:08,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:41:08,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-29 06:41:08,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757637342] [2023-11-29 06:41:08,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:41:08,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:41:08,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:08,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:41:08,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:41:08,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:41:08,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 1040 transitions, 23355 flow. Second operand has 16 states, 16 states have (on average 18.875) internal successors, (302), 16 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:08,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:41:08,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:41:08,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:41:10,789 INFO L124 PetriNetUnfolderBase]: 2104/3878 cut-off events. [2023-11-29 06:41:10,789 INFO L125 PetriNetUnfolderBase]: For 120389/120401 co-relation queries the response was YES. [2023-11-29 06:41:10,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38061 conditions, 3878 events. 2104/3878 cut-off events. For 120389/120401 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 26586 event pairs, 185 based on Foata normal form. 10/3888 useless extension candidates. Maximal degree in co-relation 37875. Up to 1613 conditions per place. [2023-11-29 06:41:10,861 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 699 selfloop transitions, 404 changer transitions 0/1110 dead transitions. [2023-11-29 06:41:10,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1110 transitions, 26556 flow [2023-11-29 06:41:10,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 06:41:10,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 06:41:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 410 transitions. [2023-11-29 06:41:10,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6539074960127592 [2023-11-29 06:41:10,862 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 410 transitions. [2023-11-29 06:41:10,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 410 transitions. [2023-11-29 06:41:10,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:41:10,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 410 transitions. [2023-11-29 06:41:10,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 21.57894736842105) internal successors, (410), 19 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:10,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 33.0) internal successors, (660), 20 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:10,864 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 33.0) internal successors, (660), 20 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:10,864 INFO L175 Difference]: Start difference. First operand has 477 places, 1040 transitions, 23355 flow. Second operand 19 states and 410 transitions. [2023-11-29 06:41:10,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1110 transitions, 26556 flow [2023-11-29 06:41:12,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 1110 transitions, 25447 flow, removed 54 selfloop flow, removed 16 redundant places. [2023-11-29 06:41:12,405 INFO L231 Difference]: Finished difference. Result has 483 places, 1066 transitions, 23825 flow [2023-11-29 06:41:12,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=22292, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1040, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=379, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=23825, PETRI_PLACES=483, PETRI_TRANSITIONS=1066} [2023-11-29 06:41:12,406 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 448 predicate places. [2023-11-29 06:41:12,406 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 1066 transitions, 23825 flow [2023-11-29 06:41:12,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.875) internal successors, (302), 16 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:12,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:41:12,407 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:12,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2023-11-29 06:41:12,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:12,607 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:41:12,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:12,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1715469568, now seen corresponding path program 54 times [2023-11-29 06:41:12,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:12,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607170313] [2023-11-29 06:41:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:12,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:12,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:12,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607170313] [2023-11-29 06:41:12,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607170313] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:41:12,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655588035] [2023-11-29 06:41:12,726 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:41:12,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:12,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:12,726 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:12,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-11-29 06:41:12,831 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 06:41:12,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:41:12,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:41:12,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:12,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:41:12,919 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:12,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655588035] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:41:12,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:41:12,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-11-29 06:41:12,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223624907] [2023-11-29 06:41:12,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:41:12,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:41:12,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:12,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:41:12,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:41:12,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:41:12,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 1066 transitions, 23825 flow. Second operand has 15 states, 15 states have (on average 18.933333333333334) internal successors, (284), 15 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:12,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:41:12,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:41:12,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:41:15,229 INFO L124 PetriNetUnfolderBase]: 2184/4050 cut-off events. [2023-11-29 06:41:15,229 INFO L125 PetriNetUnfolderBase]: For 126864/126877 co-relation queries the response was YES. [2023-11-29 06:41:15,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39525 conditions, 4050 events. 2184/4050 cut-off events. For 126864/126877 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 28111 event pairs, 115 based on Foata normal form. 12/4062 useless extension candidates. Maximal degree in co-relation 39336. Up to 1511 conditions per place. [2023-11-29 06:41:15,294 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 652 selfloop transitions, 487 changer transitions 0/1146 dead transitions. [2023-11-29 06:41:15,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 1146 transitions, 27379 flow [2023-11-29 06:41:15,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 06:41:15,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 06:41:15,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 452 transitions. [2023-11-29 06:41:15,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6522366522366523 [2023-11-29 06:41:15,295 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 452 transitions. [2023-11-29 06:41:15,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 452 transitions. [2023-11-29 06:41:15,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:41:15,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 452 transitions. [2023-11-29 06:41:15,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 21.523809523809526) internal successors, (452), 21 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:15,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 33.0) internal successors, (726), 22 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:15,297 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 33.0) internal successors, (726), 22 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:15,297 INFO L175 Difference]: Start difference. First operand has 483 places, 1066 transitions, 23825 flow. Second operand 21 states and 452 transitions. [2023-11-29 06:41:15,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 1146 transitions, 27379 flow [2023-11-29 06:41:16,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 1146 transitions, 26914 flow, removed 138 selfloop flow, removed 7 redundant places. [2023-11-29 06:41:16,750 INFO L231 Difference]: Finished difference. Result has 501 places, 1105 transitions, 25565 flow [2023-11-29 06:41:16,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=23444, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1066, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=449, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=25565, PETRI_PLACES=501, PETRI_TRANSITIONS=1105} [2023-11-29 06:41:16,751 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 466 predicate places. [2023-11-29 06:41:16,751 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 1105 transitions, 25565 flow [2023-11-29 06:41:16,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.933333333333334) internal successors, (284), 15 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:16,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:41:16,751 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:16,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2023-11-29 06:41:16,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:16,951 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:41:16,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:16,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2055416245, now seen corresponding path program 55 times [2023-11-29 06:41:16,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:16,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267350816] [2023-11-29 06:41:16,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:16,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:17,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:17,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267350816] [2023-11-29 06:41:17,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267350816] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:41:17,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603900838] [2023-11-29 06:41:17,025 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:41:17,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:17,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:17,026 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:17,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-11-29 06:41:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:17,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:41:17,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:17,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:41:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:17,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603900838] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:41:17,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:41:17,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-11-29 06:41:17,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714678568] [2023-11-29 06:41:17,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:41:17,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:41:17,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:17,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:41:17,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:41:17,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:41:17,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 1105 transitions, 25565 flow. Second operand has 15 states, 15 states have (on average 18.933333333333334) internal successors, (284), 15 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:17,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:41:17,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:41:17,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:41:19,906 INFO L124 PetriNetUnfolderBase]: 2394/4346 cut-off events. [2023-11-29 06:41:19,906 INFO L125 PetriNetUnfolderBase]: For 150189/150196 co-relation queries the response was YES. [2023-11-29 06:41:19,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44568 conditions, 4346 events. 2394/4346 cut-off events. For 150189/150196 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 30009 event pairs, 364 based on Foata normal form. 28/4374 useless extension candidates. Maximal degree in co-relation 44373. Up to 2688 conditions per place. [2023-11-29 06:41:19,975 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 814 selfloop transitions, 484 changer transitions 8/1313 dead transitions. [2023-11-29 06:41:19,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1313 transitions, 32919 flow [2023-11-29 06:41:19,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 06:41:19,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 06:41:19,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 414 transitions. [2023-11-29 06:41:19,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6602870813397129 [2023-11-29 06:41:19,976 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 414 transitions. [2023-11-29 06:41:19,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 414 transitions. [2023-11-29 06:41:19,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:41:19,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 414 transitions. [2023-11-29 06:41:19,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 21.789473684210527) internal successors, (414), 19 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:19,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 33.0) internal successors, (660), 20 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:19,978 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 33.0) internal successors, (660), 20 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:19,978 INFO L175 Difference]: Start difference. First operand has 501 places, 1105 transitions, 25565 flow. Second operand 19 states and 414 transitions. [2023-11-29 06:41:19,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 1313 transitions, 32919 flow [2023-11-29 06:41:21,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 1313 transitions, 32518 flow, removed 83 selfloop flow, removed 10 redundant places. [2023-11-29 06:41:21,871 INFO L231 Difference]: Finished difference. Result has 513 places, 1217 transitions, 29771 flow [2023-11-29 06:41:21,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=24994, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1093, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=374, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=641, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=29771, PETRI_PLACES=513, PETRI_TRANSITIONS=1217} [2023-11-29 06:41:21,872 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 478 predicate places. [2023-11-29 06:41:21,872 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 1217 transitions, 29771 flow [2023-11-29 06:41:21,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.933333333333334) internal successors, (284), 15 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:21,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:41:21,872 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:21,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2023-11-29 06:41:22,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:22,072 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:41:22,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:22,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1740901809, now seen corresponding path program 56 times [2023-11-29 06:41:22,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:22,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667429123] [2023-11-29 06:41:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:22,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:22,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:22,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:22,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667429123] [2023-11-29 06:41:22,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667429123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:41:22,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064894684] [2023-11-29 06:41:22,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:41:22,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:22,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:22,151 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:22,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-11-29 06:41:22,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:41:22,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:41:22,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:41:22,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:22,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:41:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:22,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064894684] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:41:22,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:41:22,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-11-29 06:41:22,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572085506] [2023-11-29 06:41:22,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:41:22,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:41:22,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:22,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:41:22,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:41:22,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:41:22,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 1217 transitions, 29771 flow. Second operand has 15 states, 15 states have (on average 18.8) internal successors, (282), 15 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:22,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:41:22,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:41:22,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:41:25,271 INFO L124 PetriNetUnfolderBase]: 2372/4275 cut-off events. [2023-11-29 06:41:25,271 INFO L125 PetriNetUnfolderBase]: For 161441/161453 co-relation queries the response was YES. [2023-11-29 06:41:25,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45628 conditions, 4275 events. 2372/4275 cut-off events. For 161441/161453 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 29058 event pairs, 364 based on Foata normal form. 24/4299 useless extension candidates. Maximal degree in co-relation 45429. Up to 2693 conditions per place. [2023-11-29 06:41:25,357 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 795 selfloop transitions, 506 changer transitions 1/1309 dead transitions. [2023-11-29 06:41:25,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 1309 transitions, 33828 flow [2023-11-29 06:41:25,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 06:41:25,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 06:41:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 594 transitions. [2023-11-29 06:41:25,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2023-11-29 06:41:25,359 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 594 transitions. [2023-11-29 06:41:25,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 594 transitions. [2023-11-29 06:41:25,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:41:25,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 594 transitions. [2023-11-29 06:41:25,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 21.214285714285715) internal successors, (594), 28 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:25,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 33.0) internal successors, (957), 29 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:25,361 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 33.0) internal successors, (957), 29 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:25,361 INFO L175 Difference]: Start difference. First operand has 513 places, 1217 transitions, 29771 flow. Second operand 28 states and 594 transitions. [2023-11-29 06:41:25,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 1309 transitions, 33828 flow [2023-11-29 06:41:27,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 1309 transitions, 32272 flow, removed 576 selfloop flow, removed 11 redundant places. [2023-11-29 06:41:27,757 INFO L231 Difference]: Finished difference. Result has 532 places, 1224 transitions, 29535 flow [2023-11-29 06:41:27,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=27986, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=488, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=29535, PETRI_PLACES=532, PETRI_TRANSITIONS=1224} [2023-11-29 06:41:27,758 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 497 predicate places. [2023-11-29 06:41:27,758 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 1224 transitions, 29535 flow [2023-11-29 06:41:27,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.8) internal successors, (282), 15 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:27,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:41:27,759 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:27,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2023-11-29 06:41:27,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:27,959 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:41:27,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:27,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1753658679, now seen corresponding path program 57 times [2023-11-29 06:41:27,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:27,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911435071] [2023-11-29 06:41:27,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:27,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:28,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:28,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911435071] [2023-11-29 06:41:28,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911435071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:41:28,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995337889] [2023-11-29 06:41:28,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:41:28,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:28,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:28,113 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:28,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-11-29 06:41:28,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 06:41:28,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:41:28,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:41:28,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:28,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:41:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:28,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995337889] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:41:28,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:41:28,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-11-29 06:41:28,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543911133] [2023-11-29 06:41:28,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:41:28,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:41:28,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:28,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:41:28,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:41:28,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:41:28,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 1224 transitions, 29535 flow. Second operand has 15 states, 15 states have (on average 18.933333333333334) internal successors, (284), 15 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:28,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:41:28,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:41:28,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:41:31,093 INFO L124 PetriNetUnfolderBase]: 2462/4414 cut-off events. [2023-11-29 06:41:31,093 INFO L125 PetriNetUnfolderBase]: For 154366/154375 co-relation queries the response was YES. [2023-11-29 06:41:31,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47388 conditions, 4414 events. 2462/4414 cut-off events. For 154366/154375 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 30040 event pairs, 384 based on Foata normal form. 15/4429 useless extension candidates. Maximal degree in co-relation 47185. Up to 2810 conditions per place. [2023-11-29 06:41:31,172 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 915 selfloop transitions, 411 changer transitions 19/1352 dead transitions. [2023-11-29 06:41:31,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 1352 transitions, 35110 flow [2023-11-29 06:41:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:41:31,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 06:41:31,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 371 transitions. [2023-11-29 06:41:31,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.661319073083779 [2023-11-29 06:41:31,173 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 371 transitions. [2023-11-29 06:41:31,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 371 transitions. [2023-11-29 06:41:31,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:41:31,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 371 transitions. [2023-11-29 06:41:31,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 21.823529411764707) internal successors, (371), 17 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:31,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:31,174 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:31,174 INFO L175 Difference]: Start difference. First operand has 532 places, 1224 transitions, 29535 flow. Second operand 17 states and 371 transitions. [2023-11-29 06:41:31,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 1352 transitions, 35110 flow [2023-11-29 06:41:33,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 1352 transitions, 33948 flow, removed 207 selfloop flow, removed 14 redundant places. [2023-11-29 06:41:33,607 INFO L231 Difference]: Finished difference. Result has 537 places, 1252 transitions, 30585 flow [2023-11-29 06:41:33,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=28488, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=809, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=30585, PETRI_PLACES=537, PETRI_TRANSITIONS=1252} [2023-11-29 06:41:33,608 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 502 predicate places. [2023-11-29 06:41:33,608 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 1252 transitions, 30585 flow [2023-11-29 06:41:33,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.933333333333334) internal successors, (284), 15 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:33,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:41:33,608 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:33,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2023-11-29 06:41:33,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:33,809 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:41:33,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:33,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1494325654, now seen corresponding path program 58 times [2023-11-29 06:41:33,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:33,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595400993] [2023-11-29 06:41:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:33,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:41:33,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:33,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595400993] [2023-11-29 06:41:33,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595400993] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:41:33,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973203340] [2023-11-29 06:41:33,904 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:41:33,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:33,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:33,905 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:33,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-11-29 06:41:34,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:41:34,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:41:34,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:41:34,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:34,071 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:34,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:41:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:41:34,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973203340] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:41:34,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:41:34,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 15 [2023-11-29 06:41:34,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128440448] [2023-11-29 06:41:34,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:41:34,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:41:34,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:34,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:41:34,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:41:34,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:41:34,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 1252 transitions, 30585 flow. Second operand has 15 states, 15 states have (on average 18.866666666666667) internal successors, (283), 15 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:34,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:41:34,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:41:34,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:41:37,387 INFO L124 PetriNetUnfolderBase]: 2747/4803 cut-off events. [2023-11-29 06:41:37,387 INFO L125 PetriNetUnfolderBase]: For 190370/190377 co-relation queries the response was YES. [2023-11-29 06:41:37,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53465 conditions, 4803 events. 2747/4803 cut-off events. For 190370/190377 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 31967 event pairs, 225 based on Foata normal form. 16/4819 useless extension candidates. Maximal degree in co-relation 53259. Up to 1536 conditions per place. [2023-11-29 06:41:37,470 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 691 selfloop transitions, 753 changer transitions 6/1457 dead transitions. [2023-11-29 06:41:37,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 1457 transitions, 39512 flow [2023-11-29 06:41:37,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 06:41:37,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 06:41:37,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 432 transitions. [2023-11-29 06:41:37,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6545454545454545 [2023-11-29 06:41:37,471 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 432 transitions. [2023-11-29 06:41:37,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 432 transitions. [2023-11-29 06:41:37,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:41:37,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 432 transitions. [2023-11-29 06:41:37,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 21.6) internal successors, (432), 20 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:37,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 33.0) internal successors, (693), 21 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:37,473 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 33.0) internal successors, (693), 21 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:37,473 INFO L175 Difference]: Start difference. First operand has 537 places, 1252 transitions, 30585 flow. Second operand 20 states and 432 transitions. [2023-11-29 06:41:37,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 1457 transitions, 39512 flow [2023-11-29 06:41:40,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 1457 transitions, 38783 flow, removed 158 selfloop flow, removed 11 redundant places. [2023-11-29 06:41:40,251 INFO L231 Difference]: Finished difference. Result has 545 places, 1407 transitions, 37211 flow [2023-11-29 06:41:40,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=29849, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=598, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=37211, PETRI_PLACES=545, PETRI_TRANSITIONS=1407} [2023-11-29 06:41:40,252 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 510 predicate places. [2023-11-29 06:41:40,252 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 1407 transitions, 37211 flow [2023-11-29 06:41:40,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.866666666666667) internal successors, (283), 15 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:40,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:41:40,252 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:40,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2023-11-29 06:41:40,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:40,453 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:41:40,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:40,453 INFO L85 PathProgramCache]: Analyzing trace with hash 944766588, now seen corresponding path program 59 times [2023-11-29 06:41:40,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:40,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750881831] [2023-11-29 06:41:40,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:40,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:40,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:40,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750881831] [2023-11-29 06:41:40,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750881831] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:41:40,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57423923] [2023-11-29 06:41:40,529 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:41:40,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:40,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:40,529 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:40,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-11-29 06:41:40,639 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 06:41:40,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:41:40,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:41:40,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:40,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:40,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:41:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:40,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57423923] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:41:40,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:41:40,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-29 06:41:40,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482352280] [2023-11-29 06:41:40,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:41:40,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:41:40,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:40,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:41:40,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:41:40,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:41:40,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 1407 transitions, 37211 flow. Second operand has 16 states, 16 states have (on average 18.6875) internal successors, (299), 16 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:40,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:41:40,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:41:40,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:41:44,205 INFO L124 PetriNetUnfolderBase]: 2808/4894 cut-off events. [2023-11-29 06:41:44,205 INFO L125 PetriNetUnfolderBase]: For 204675/204683 co-relation queries the response was YES. [2023-11-29 06:41:44,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56729 conditions, 4894 events. 2808/4894 cut-off events. For 204675/204683 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 32587 event pairs, 226 based on Foata normal form. 6/4900 useless extension candidates. Maximal degree in co-relation 56520. Up to 1560 conditions per place. [2023-11-29 06:41:44,297 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 706 selfloop transitions, 771 changer transitions 8/1492 dead transitions. [2023-11-29 06:41:44,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 1492 transitions, 42620 flow [2023-11-29 06:41:44,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 06:41:44,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 06:41:44,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 449 transitions. [2023-11-29 06:41:44,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6479076479076479 [2023-11-29 06:41:44,298 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 449 transitions. [2023-11-29 06:41:44,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 449 transitions. [2023-11-29 06:41:44,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:41:44,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 449 transitions. [2023-11-29 06:41:44,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 21.38095238095238) internal successors, (449), 21 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:44,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 33.0) internal successors, (726), 22 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:44,300 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 33.0) internal successors, (726), 22 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:44,300 INFO L175 Difference]: Start difference. First operand has 545 places, 1407 transitions, 37211 flow. Second operand 21 states and 449 transitions. [2023-11-29 06:41:44,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 1492 transitions, 42620 flow [2023-11-29 06:41:47,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 1492 transitions, 40378 flow, removed 993 selfloop flow, removed 11 redundant places. [2023-11-29 06:41:47,769 INFO L231 Difference]: Finished difference. Result has 560 places, 1442 transitions, 38929 flow [2023-11-29 06:41:47,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=35647, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=729, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=38929, PETRI_PLACES=560, PETRI_TRANSITIONS=1442} [2023-11-29 06:41:47,770 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 525 predicate places. [2023-11-29 06:41:47,770 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 1442 transitions, 38929 flow [2023-11-29 06:41:47,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.6875) internal successors, (299), 16 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:47,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:41:47,770 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:47,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2023-11-29 06:41:47,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2023-11-29 06:41:47,971 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:41:47,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:47,971 INFO L85 PathProgramCache]: Analyzing trace with hash 643558026, now seen corresponding path program 60 times [2023-11-29 06:41:47,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:47,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3680534] [2023-11-29 06:41:47,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:47,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:48,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:48,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3680534] [2023-11-29 06:41:48,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3680534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:41:48,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551257602] [2023-11-29 06:41:48,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:41:48,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:48,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:48,054 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:48,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-11-29 06:41:48,162 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 06:41:48,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:41:48,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:41:48,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:48,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:41:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:48,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551257602] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:41:48,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:41:48,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-29 06:41:48,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984542176] [2023-11-29 06:41:48,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:41:48,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:41:48,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:48,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:41:48,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:41:48,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:41:48,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 1442 transitions, 38929 flow. Second operand has 18 states, 18 states have (on average 18.944444444444443) internal successors, (341), 18 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:48,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:41:48,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:41:48,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:41:52,434 INFO L124 PetriNetUnfolderBase]: 3013/5289 cut-off events. [2023-11-29 06:41:52,434 INFO L125 PetriNetUnfolderBase]: For 181791/181797 co-relation queries the response was YES. [2023-11-29 06:41:52,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60562 conditions, 5289 events. 3013/5289 cut-off events. For 181791/181797 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 35981 event pairs, 161 based on Foata normal form. 10/5299 useless extension candidates. Maximal degree in co-relation 60347. Up to 2598 conditions per place. [2023-11-29 06:41:52,532 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 1016 selfloop transitions, 575 changer transitions 0/1598 dead transitions. [2023-11-29 06:41:52,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 1598 transitions, 45254 flow [2023-11-29 06:41:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 06:41:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-29 06:41:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 615 transitions. [2023-11-29 06:41:52,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6426332288401254 [2023-11-29 06:41:52,533 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 615 transitions. [2023-11-29 06:41:52,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 615 transitions. [2023-11-29 06:41:52,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:41:52,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 615 transitions. [2023-11-29 06:41:52,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 21.20689655172414) internal successors, (615), 29 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:52,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 33.0) internal successors, (990), 30 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:52,535 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 33.0) internal successors, (990), 30 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:52,535 INFO L175 Difference]: Start difference. First operand has 560 places, 1442 transitions, 38929 flow. Second operand 29 states and 615 transitions. [2023-11-29 06:41:52,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 1598 transitions, 45254 flow [2023-11-29 06:41:55,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 1598 transitions, 44598 flow, removed 94 selfloop flow, removed 9 redundant places. [2023-11-29 06:41:55,842 INFO L231 Difference]: Finished difference. Result has 582 places, 1541 transitions, 42350 flow [2023-11-29 06:41:55,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=38307, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=939, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=42350, PETRI_PLACES=582, PETRI_TRANSITIONS=1541} [2023-11-29 06:41:55,843 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 547 predicate places. [2023-11-29 06:41:55,843 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 1541 transitions, 42350 flow [2023-11-29 06:41:55,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.944444444444443) internal successors, (341), 18 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:55,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:41:55,844 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:55,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2023-11-29 06:41:56,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2023-11-29 06:41:56,044 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:41:56,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:56,044 INFO L85 PathProgramCache]: Analyzing trace with hash -338825988, now seen corresponding path program 61 times [2023-11-29 06:41:56,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:56,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350400861] [2023-11-29 06:41:56,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:56,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:56,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350400861] [2023-11-29 06:41:56,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350400861] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:41:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042891075] [2023-11-29 06:41:56,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:41:56,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:56,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:56,119 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:56,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-11-29 06:41:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:56,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:41:56,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:56,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:41:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:56,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042891075] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:41:56,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:41:56,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2023-11-29 06:41:56,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530423486] [2023-11-29 06:41:56,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:41:56,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:41:56,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:56,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:41:56,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:41:56,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:41:56,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 1541 transitions, 42350 flow. Second operand has 15 states, 15 states have (on average 19.0) internal successors, (285), 15 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:56,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:41:56,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:41:56,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:42:00,345 INFO L124 PetriNetUnfolderBase]: 3114/5531 cut-off events. [2023-11-29 06:42:00,345 INFO L125 PetriNetUnfolderBase]: For 205118/205124 co-relation queries the response was YES. [2023-11-29 06:42:00,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63394 conditions, 5531 events. 3114/5531 cut-off events. For 205118/205124 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 38495 event pairs, 128 based on Foata normal form. 39/5570 useless extension candidates. Maximal degree in co-relation 63175. Up to 2171 conditions per place. [2023-11-29 06:42:00,448 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 818 selfloop transitions, 818 changer transitions 1/1644 dead transitions. [2023-11-29 06:42:00,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 1644 transitions, 47361 flow [2023-11-29 06:42:00,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 06:42:00,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 06:42:00,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 554 transitions. [2023-11-29 06:42:00,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6456876456876457 [2023-11-29 06:42:00,449 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 554 transitions. [2023-11-29 06:42:00,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 554 transitions. [2023-11-29 06:42:00,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:42:00,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 554 transitions. [2023-11-29 06:42:00,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 21.307692307692307) internal successors, (554), 26 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:00,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 33.0) internal successors, (891), 27 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:00,451 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 33.0) internal successors, (891), 27 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:00,451 INFO L175 Difference]: Start difference. First operand has 582 places, 1541 transitions, 42350 flow. Second operand 26 states and 554 transitions. [2023-11-29 06:42:00,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 1644 transitions, 47361 flow [2023-11-29 06:42:04,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 1644 transitions, 46907 flow, removed 183 selfloop flow, removed 6 redundant places. [2023-11-29 06:42:04,122 INFO L231 Difference]: Finished difference. Result has 603 places, 1602 transitions, 45332 flow [2023-11-29 06:42:04,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=41621, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=752, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=768, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=45332, PETRI_PLACES=603, PETRI_TRANSITIONS=1602} [2023-11-29 06:42:04,124 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 568 predicate places. [2023-11-29 06:42:04,124 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 1602 transitions, 45332 flow [2023-11-29 06:42:04,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 19.0) internal successors, (285), 15 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:04,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:42:04,124 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:42:04,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2023-11-29 06:42:04,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:42:04,325 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:42:04,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:04,325 INFO L85 PathProgramCache]: Analyzing trace with hash 28222060, now seen corresponding path program 62 times [2023-11-29 06:42:04,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:04,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233293738] [2023-11-29 06:42:04,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:04,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:04,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:04,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233293738] [2023-11-29 06:42:04,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233293738] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:42:04,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797676860] [2023-11-29 06:42:04,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:42:04,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:42:04,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:42:04,403 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:42:04,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-11-29 06:42:04,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:42:04,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:42:04,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:42:04,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:42:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:04,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:42:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:04,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797676860] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:42:04,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:42:04,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 15 [2023-11-29 06:42:04,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397110696] [2023-11-29 06:42:04,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:42:04,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:42:04,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:04,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:42:04,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:42:04,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:42:04,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 1602 transitions, 45332 flow. Second operand has 15 states, 15 states have (on average 19.0) internal successors, (285), 15 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:04,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:42:04,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:42:04,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:42:09,070 INFO L124 PetriNetUnfolderBase]: 3115/5709 cut-off events. [2023-11-29 06:42:09,070 INFO L125 PetriNetUnfolderBase]: For 210309/210314 co-relation queries the response was YES. [2023-11-29 06:42:09,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65491 conditions, 5709 events. 3115/5709 cut-off events. For 210309/210314 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 41516 event pairs, 168 based on Foata normal form. 51/5760 useless extension candidates. Maximal degree in co-relation 65269. Up to 1519 conditions per place. [2023-11-29 06:42:09,178 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 660 selfloop transitions, 983 changer transitions 0/1650 dead transitions. [2023-11-29 06:42:09,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 1650 transitions, 48912 flow [2023-11-29 06:42:09,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 06:42:09,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 06:42:09,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 537 transitions. [2023-11-29 06:42:09,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6509090909090909 [2023-11-29 06:42:09,179 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 537 transitions. [2023-11-29 06:42:09,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 537 transitions. [2023-11-29 06:42:09,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:42:09,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 537 transitions. [2023-11-29 06:42:09,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 21.48) internal successors, (537), 25 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:09,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 33.0) internal successors, (858), 26 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:09,181 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 33.0) internal successors, (858), 26 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:09,181 INFO L175 Difference]: Start difference. First operand has 603 places, 1602 transitions, 45332 flow. Second operand 25 states and 537 transitions. [2023-11-29 06:42:09,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 1650 transitions, 48912 flow [2023-11-29 06:42:13,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 1650 transitions, 47898 flow, removed 223 selfloop flow, removed 17 redundant places. [2023-11-29 06:42:13,347 INFO L231 Difference]: Finished difference. Result has 610 places, 1601 transitions, 46340 flow [2023-11-29 06:42:13,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=43507, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=960, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=46340, PETRI_PLACES=610, PETRI_TRANSITIONS=1601} [2023-11-29 06:42:13,349 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 575 predicate places. [2023-11-29 06:42:13,349 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 1601 transitions, 46340 flow [2023-11-29 06:42:13,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 19.0) internal successors, (285), 15 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:13,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:42:13,349 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:42:13,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2023-11-29 06:42:13,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:42:13,550 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:42:13,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:13,550 INFO L85 PathProgramCache]: Analyzing trace with hash -616614694, now seen corresponding path program 63 times [2023-11-29 06:42:13,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:13,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354755553] [2023-11-29 06:42:13,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:13,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:13,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:13,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354755553] [2023-11-29 06:42:13,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354755553] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:42:13,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999623213] [2023-11-29 06:42:13,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:42:13,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:42:13,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:42:13,627 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:42:13,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-11-29 06:42:13,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 06:42:13,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:42:13,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:42:13,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:42:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:13,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:42:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:13,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999623213] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:42:13,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:42:13,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-11-29 06:42:13,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811742333] [2023-11-29 06:42:13,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:42:13,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 06:42:13,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:13,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 06:42:13,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:42:13,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:42:13,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 1601 transitions, 46340 flow. Second operand has 17 states, 17 states have (on average 18.705882352941178) internal successors, (318), 17 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:13,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:42:13,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:42:13,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:42:19,119 INFO L124 PetriNetUnfolderBase]: 3552/6405 cut-off events. [2023-11-29 06:42:19,119 INFO L125 PetriNetUnfolderBase]: For 264108/264113 co-relation queries the response was YES. [2023-11-29 06:42:19,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76678 conditions, 6405 events. 3552/6405 cut-off events. For 264108/264113 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 46667 event pairs, 209 based on Foata normal form. 16/6421 useless extension candidates. Maximal degree in co-relation 76460. Up to 1748 conditions per place. [2023-11-29 06:42:19,250 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 659 selfloop transitions, 1216 changer transitions 0/1882 dead transitions. [2023-11-29 06:42:19,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 1882 transitions, 58284 flow [2023-11-29 06:42:19,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 06:42:19,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 06:42:19,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 562 transitions. [2023-11-29 06:42:19,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.655011655011655 [2023-11-29 06:42:19,252 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 562 transitions. [2023-11-29 06:42:19,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 562 transitions. [2023-11-29 06:42:19,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:42:19,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 562 transitions. [2023-11-29 06:42:19,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 21.615384615384617) internal successors, (562), 26 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:19,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 33.0) internal successors, (891), 27 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:19,254 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 33.0) internal successors, (891), 27 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:19,255 INFO L175 Difference]: Start difference. First operand has 610 places, 1601 transitions, 46340 flow. Second operand 26 states and 562 transitions. [2023-11-29 06:42:19,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 1882 transitions, 58284 flow [2023-11-29 06:42:23,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 1882 transitions, 57184 flow, removed 106 selfloop flow, removed 13 redundant places. [2023-11-29 06:42:23,738 INFO L231 Difference]: Finished difference. Result has 633 places, 1842 transitions, 57269 flow [2023-11-29 06:42:23,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=45440, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=995, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=57269, PETRI_PLACES=633, PETRI_TRANSITIONS=1842} [2023-11-29 06:42:23,740 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 598 predicate places. [2023-11-29 06:42:23,740 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 1842 transitions, 57269 flow [2023-11-29 06:42:23,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.705882352941178) internal successors, (318), 17 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:23,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:42:23,740 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:42:23,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2023-11-29 06:42:23,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:42:23,941 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:42:23,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:23,941 INFO L85 PathProgramCache]: Analyzing trace with hash -810393698, now seen corresponding path program 64 times [2023-11-29 06:42:23,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:23,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136406220] [2023-11-29 06:42:23,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:23,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:24,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:24,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136406220] [2023-11-29 06:42:24,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136406220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:42:24,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577236391] [2023-11-29 06:42:24,061 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:42:24,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:42:24,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:42:24,062 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:42:24,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-11-29 06:42:24,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:42:24,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:42:24,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:42:24,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:42:24,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:24,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:42:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:24,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577236391] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:42:24,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:42:24,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-29 06:42:24,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955126540] [2023-11-29 06:42:24,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:42:24,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 06:42:24,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:24,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 06:42:24,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:42:24,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:42:24,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 1842 transitions, 57269 flow. Second operand has 20 states, 20 states have (on average 18.5) internal successors, (370), 20 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:24,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:42:24,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:42:24,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:42:30,336 INFO L124 PetriNetUnfolderBase]: 3689/6641 cut-off events. [2023-11-29 06:42:30,337 INFO L125 PetriNetUnfolderBase]: For 303526/303537 co-relation queries the response was YES. [2023-11-29 06:42:30,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84942 conditions, 6641 events. 3689/6641 cut-off events. For 303526/303537 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 48772 event pairs, 362 based on Foata normal form. 14/6654 useless extension candidates. Maximal degree in co-relation 84713. Up to 2336 conditions per place. [2023-11-29 06:42:30,468 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 880 selfloop transitions, 1050 changer transitions 21/1958 dead transitions. [2023-11-29 06:42:30,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 1958 transitions, 64764 flow [2023-11-29 06:42:30,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 06:42:30,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 06:42:30,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 524 transitions. [2023-11-29 06:42:30,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6351515151515151 [2023-11-29 06:42:30,470 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 524 transitions. [2023-11-29 06:42:30,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 524 transitions. [2023-11-29 06:42:30,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:42:30,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 524 transitions. [2023-11-29 06:42:30,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 20.96) internal successors, (524), 25 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:30,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 33.0) internal successors, (858), 26 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:30,471 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 33.0) internal successors, (858), 26 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:30,471 INFO L175 Difference]: Start difference. First operand has 633 places, 1842 transitions, 57269 flow. Second operand 25 states and 524 transitions. [2023-11-29 06:42:30,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 1958 transitions, 64764 flow [2023-11-29 06:42:36,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 1958 transitions, 62328 flow, removed 1087 selfloop flow, removed 10 redundant places. [2023-11-29 06:42:36,486 INFO L231 Difference]: Finished difference. Result has 656 places, 1903 transitions, 60775 flow [2023-11-29 06:42:36,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=55633, PETRI_DIFFERENCE_MINUEND_PLACES=623, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1842, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=978, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=811, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=60775, PETRI_PLACES=656, PETRI_TRANSITIONS=1903} [2023-11-29 06:42:36,488 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 621 predicate places. [2023-11-29 06:42:36,488 INFO L495 AbstractCegarLoop]: Abstraction has has 656 places, 1903 transitions, 60775 flow [2023-11-29 06:42:36,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.5) internal successors, (370), 20 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:36,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:42:36,488 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:42:36,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2023-11-29 06:42:36,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:42:36,689 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:42:36,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:36,689 INFO L85 PathProgramCache]: Analyzing trace with hash -612547968, now seen corresponding path program 65 times [2023-11-29 06:42:36,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:36,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774090370] [2023-11-29 06:42:36,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:36,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:36,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:36,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774090370] [2023-11-29 06:42:36,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774090370] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:42:36,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010856961] [2023-11-29 06:42:36,767 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:42:36,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:42:36,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:42:36,768 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:42:36,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-11-29 06:42:36,896 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-29 06:42:36,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:42:36,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:42:36,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:42:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:36,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:42:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:37,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010856961] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:42:37,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:42:37,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2023-11-29 06:42:37,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556561305] [2023-11-29 06:42:37,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:42:37,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 06:42:37,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:37,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 06:42:37,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:42:37,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:42:37,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 1903 transitions, 60775 flow. Second operand has 17 states, 17 states have (on average 18.823529411764707) internal successors, (320), 17 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:37,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:42:37,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:42:37,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:42:43,549 INFO L124 PetriNetUnfolderBase]: 4198/7440 cut-off events. [2023-11-29 06:42:43,549 INFO L125 PetriNetUnfolderBase]: For 327360/327371 co-relation queries the response was YES. [2023-11-29 06:42:43,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97685 conditions, 7440 events. 4198/7440 cut-off events. For 327360/327371 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 54583 event pairs, 183 based on Foata normal form. 20/7459 useless extension candidates. Maximal degree in co-relation 97446. Up to 2210 conditions per place. [2023-11-29 06:42:43,718 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 859 selfloop transitions, 1359 changer transitions 0/2225 dead transitions. [2023-11-29 06:42:43,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 2225 transitions, 75427 flow [2023-11-29 06:42:43,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 06:42:43,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-29 06:42:43,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 576 transitions. [2023-11-29 06:42:43,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2023-11-29 06:42:43,719 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 576 transitions. [2023-11-29 06:42:43,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 576 transitions. [2023-11-29 06:42:43,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:42:43,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 576 transitions. [2023-11-29 06:42:43,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 21.333333333333332) internal successors, (576), 27 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:43,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 33.0) internal successors, (924), 28 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:43,721 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 33.0) internal successors, (924), 28 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:43,721 INFO L175 Difference]: Start difference. First operand has 656 places, 1903 transitions, 60775 flow. Second operand 27 states and 576 transitions. [2023-11-29 06:42:43,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 2225 transitions, 75427 flow [2023-11-29 06:42:51,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 660 places, 2225 transitions, 74236 flow, removed 175 selfloop flow, removed 15 redundant places. [2023-11-29 06:42:51,080 INFO L231 Difference]: Finished difference. Result has 666 places, 2181 transitions, 73651 flow [2023-11-29 06:42:51,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=59676, PETRI_DIFFERENCE_MINUEND_PLACES=634, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1903, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1094, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=718, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=73651, PETRI_PLACES=666, PETRI_TRANSITIONS=2181} [2023-11-29 06:42:51,082 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 631 predicate places. [2023-11-29 06:42:51,082 INFO L495 AbstractCegarLoop]: Abstraction has has 666 places, 2181 transitions, 73651 flow [2023-11-29 06:42:51,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.823529411764707) internal successors, (320), 17 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:51,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:42:51,082 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:42:51,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2023-11-29 06:42:51,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:42:51,282 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:42:51,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:51,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1604002550, now seen corresponding path program 66 times [2023-11-29 06:42:51,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:51,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588428468] [2023-11-29 06:42:51,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:51,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:51,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:51,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588428468] [2023-11-29 06:42:51,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588428468] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:42:51,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391474056] [2023-11-29 06:42:51,364 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:42:51,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:42:51,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:42:51,365 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:42:51,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-11-29 06:42:51,484 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 06:42:51,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:42:51,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:42:51,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:42:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:51,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:42:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:51,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391474056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:42:51,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:42:51,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-29 06:42:51,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201288133] [2023-11-29 06:42:51,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:42:51,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 06:42:51,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:51,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 06:42:51,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:42:51,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:42:51,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 2181 transitions, 73651 flow. Second operand has 20 states, 20 states have (on average 18.7) internal successors, (374), 20 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:51,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:42:51,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:42:51,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:43:00,784 INFO L124 PetriNetUnfolderBase]: 4809/8713 cut-off events. [2023-11-29 06:43:00,784 INFO L125 PetriNetUnfolderBase]: For 392069/392074 co-relation queries the response was YES. [2023-11-29 06:43:00,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117526 conditions, 8713 events. 4809/8713 cut-off events. For 392069/392074 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 67347 event pairs, 124 based on Foata normal form. 27/8740 useless extension candidates. Maximal degree in co-relation 117285. Up to 3271 conditions per place. [2023-11-29 06:43:00,972 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 1342 selfloop transitions, 1199 changer transitions 0/2548 dead transitions. [2023-11-29 06:43:00,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 2548 transitions, 90835 flow [2023-11-29 06:43:00,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 06:43:00,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-29 06:43:00,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 759 transitions. [2023-11-29 06:43:00,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2023-11-29 06:43:00,973 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 759 transitions. [2023-11-29 06:43:00,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 759 transitions. [2023-11-29 06:43:00,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:43:00,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 759 transitions. [2023-11-29 06:43:00,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 21.083333333333332) internal successors, (759), 36 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:00,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 33.0) internal successors, (1221), 37 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:00,975 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 33.0) internal successors, (1221), 37 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:00,975 INFO L175 Difference]: Start difference. First operand has 666 places, 2181 transitions, 73651 flow. Second operand 36 states and 759 transitions. [2023-11-29 06:43:00,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 2548 transitions, 90835 flow [2023-11-29 06:43:12,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 2548 transitions, 89861 flow, removed 266 selfloop flow, removed 13 redundant places. [2023-11-29 06:43:12,880 INFO L231 Difference]: Finished difference. Result has 699 places, 2491 transitions, 88276 flow [2023-11-29 06:43:12,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72643, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=902, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=88276, PETRI_PLACES=699, PETRI_TRANSITIONS=2491} [2023-11-29 06:43:12,882 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 664 predicate places. [2023-11-29 06:43:12,882 INFO L495 AbstractCegarLoop]: Abstraction has has 699 places, 2491 transitions, 88276 flow [2023-11-29 06:43:12,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.7) internal successors, (374), 20 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:12,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:43:12,882 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:43:12,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2023-11-29 06:43:13,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:43:13,083 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:43:13,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:43:13,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1671317736, now seen corresponding path program 67 times [2023-11-29 06:43:13,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:43:13,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788832719] [2023-11-29 06:43:13,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:43:13,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:43:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:43:13,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:43:13,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788832719] [2023-11-29 06:43:13,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788832719] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:43:13,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019876833] [2023-11-29 06:43:13,157 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:43:13,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:43:13,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:43:13,158 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:43:13,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-11-29 06:43:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:13,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:43:13,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:43:13,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:43:13,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:43:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:43:13,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019876833] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:43:13,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:43:13,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-11-29 06:43:13,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479814200] [2023-11-29 06:43:13,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:43:13,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:43:13,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:43:13,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:43:13,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:43:13,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:43:13,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 2491 transitions, 88276 flow. Second operand has 14 states, 14 states have (on average 18.785714285714285) internal successors, (263), 14 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:13,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:43:13,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:43:13,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:43:23,178 INFO L124 PetriNetUnfolderBase]: 4944/8801 cut-off events. [2023-11-29 06:43:23,178 INFO L125 PetriNetUnfolderBase]: For 435193/435198 co-relation queries the response was YES. [2023-11-29 06:43:23,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124607 conditions, 8801 events. 4944/8801 cut-off events. For 435193/435198 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 66517 event pairs, 708 based on Foata normal form. 5/8805 useless extension candidates. Maximal degree in co-relation 124355. Up to 5457 conditions per place. [2023-11-29 06:43:23,384 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 1965 selfloop transitions, 628 changer transitions 7/2607 dead transitions. [2023-11-29 06:43:23,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 707 places, 2607 transitions, 96662 flow [2023-11-29 06:43:23,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:43:23,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 06:43:23,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2023-11-29 06:43:23,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.67003367003367 [2023-11-29 06:43:23,385 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 199 transitions. [2023-11-29 06:43:23,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 199 transitions. [2023-11-29 06:43:23,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:43:23,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 199 transitions. [2023-11-29 06:43:23,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 22.11111111111111) internal successors, (199), 9 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:23,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:23,386 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:23,386 INFO L175 Difference]: Start difference. First operand has 699 places, 2491 transitions, 88276 flow. Second operand 9 states and 199 transitions. [2023-11-29 06:43:23,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 707 places, 2607 transitions, 96662 flow [2023-11-29 06:43:37,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 2607 transitions, 95687 flow, removed 263 selfloop flow, removed 15 redundant places. [2023-11-29 06:43:37,080 INFO L231 Difference]: Finished difference. Result has 697 places, 2539 transitions, 90347 flow [2023-11-29 06:43:37,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=87348, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=580, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1863, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=90347, PETRI_PLACES=697, PETRI_TRANSITIONS=2539} [2023-11-29 06:43:37,082 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 662 predicate places. [2023-11-29 06:43:37,082 INFO L495 AbstractCegarLoop]: Abstraction has has 697 places, 2539 transitions, 90347 flow [2023-11-29 06:43:37,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.785714285714285) internal successors, (263), 14 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:37,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:43:37,082 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:43:37,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2023-11-29 06:43:37,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2023-11-29 06:43:37,283 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:43:37,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:43:37,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1559398847, now seen corresponding path program 68 times [2023-11-29 06:43:37,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:43:37,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879166811] [2023-11-29 06:43:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:43:37,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:43:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:43:37,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:43:37,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879166811] [2023-11-29 06:43:37,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879166811] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:43:37,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123073230] [2023-11-29 06:43:37,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:43:37,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:43:37,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:43:37,363 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:43:37,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-11-29 06:43:37,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:43:37,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:43:37,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:43:37,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:43:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:43:37,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:43:37,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:43:37,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123073230] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:43:37,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:43:37,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-11-29 06:43:37,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581141101] [2023-11-29 06:43:37,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:43:37,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:43:37,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:43:37,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:43:37,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:43:37,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:43:37,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 2539 transitions, 90347 flow. Second operand has 14 states, 14 states have (on average 18.785714285714285) internal successors, (263), 14 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:37,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:43:37,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:43:37,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:43:47,924 INFO L124 PetriNetUnfolderBase]: 5075/8968 cut-off events. [2023-11-29 06:43:47,925 INFO L125 PetriNetUnfolderBase]: For 457025/457032 co-relation queries the response was YES. [2023-11-29 06:43:48,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129036 conditions, 8968 events. 5075/8968 cut-off events. For 457025/457032 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 67693 event pairs, 52 based on Foata normal form. 19/8986 useless extension candidates. Maximal degree in co-relation 128779. Up to 4469 conditions per place. [2023-11-29 06:43:48,253 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 1756 selfloop transitions, 928 changer transitions 0/2691 dead transitions. [2023-11-29 06:43:48,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 706 places, 2691 transitions, 99888 flow [2023-11-29 06:43:48,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:43:48,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 06:43:48,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 286 transitions. [2023-11-29 06:43:48,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 06:43:48,255 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 286 transitions. [2023-11-29 06:43:48,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 286 transitions. [2023-11-29 06:43:48,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:43:48,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 286 transitions. [2023-11-29 06:43:48,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 22.0) internal successors, (286), 13 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:48,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 33.0) internal successors, (462), 14 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:48,256 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 33.0) internal successors, (462), 14 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:48,256 INFO L175 Difference]: Start difference. First operand has 697 places, 2539 transitions, 90347 flow. Second operand 13 states and 286 transitions. [2023-11-29 06:43:48,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 706 places, 2691 transitions, 99888 flow [2023-11-29 06:44:03,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 698 places, 2691 transitions, 99027 flow, removed 94 selfloop flow, removed 8 redundant places. [2023-11-29 06:44:03,180 INFO L231 Difference]: Finished difference. Result has 705 places, 2606 transitions, 93958 flow [2023-11-29 06:44:03,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=89486, PETRI_DIFFERENCE_MINUEND_PLACES=686, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=861, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=93958, PETRI_PLACES=705, PETRI_TRANSITIONS=2606} [2023-11-29 06:44:03,182 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 670 predicate places. [2023-11-29 06:44:03,182 INFO L495 AbstractCegarLoop]: Abstraction has has 705 places, 2606 transitions, 93958 flow [2023-11-29 06:44:03,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.785714285714285) internal successors, (263), 14 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:03,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:44:03,182 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:44:03,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2023-11-29 06:44:03,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:03,383 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:44:03,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:44:03,383 INFO L85 PathProgramCache]: Analyzing trace with hash -879231962, now seen corresponding path program 69 times [2023-11-29 06:44:03,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:44:03,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948577270] [2023-11-29 06:44:03,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:03,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:44:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:44:03,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:44:03,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948577270] [2023-11-29 06:44:03,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948577270] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:44:03,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377676991] [2023-11-29 06:44:03,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:44:03,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:03,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:44:03,467 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:44:03,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-11-29 06:44:03,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 06:44:03,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:44:03,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:44:03,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:44:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:44:03,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:44:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:44:03,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377676991] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:44:03,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:44:03,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-29 06:44:03,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176646948] [2023-11-29 06:44:03,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:44:03,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 06:44:03,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:44:03,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 06:44:03,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:44:03,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:44:03,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 705 places, 2606 transitions, 93958 flow. Second operand has 20 states, 20 states have (on average 18.6) internal successors, (372), 20 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:03,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:44:03,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:44:03,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:44:14,101 INFO L124 PetriNetUnfolderBase]: 5280/9285 cut-off events. [2023-11-29 06:44:14,101 INFO L125 PetriNetUnfolderBase]: For 521277/521288 co-relation queries the response was YES. [2023-11-29 06:44:14,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135955 conditions, 9285 events. 5280/9285 cut-off events. For 521277/521288 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 70066 event pairs, 1341 based on Foata normal form. 18/9302 useless extension candidates. Maximal degree in co-relation 135695. Up to 7821 conditions per place. [2023-11-29 06:44:14,323 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 2428 selfloop transitions, 325 changer transitions 18/2778 dead transitions. [2023-11-29 06:44:14,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 2778 transitions, 105305 flow [2023-11-29 06:44:14,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 06:44:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 06:44:14,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 526 transitions. [2023-11-29 06:44:14,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6375757575757576 [2023-11-29 06:44:14,324 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 526 transitions. [2023-11-29 06:44:14,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 526 transitions. [2023-11-29 06:44:14,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:44:14,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 526 transitions. [2023-11-29 06:44:14,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 21.04) internal successors, (526), 25 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:14,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 33.0) internal successors, (858), 26 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:14,325 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 33.0) internal successors, (858), 26 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:14,325 INFO L175 Difference]: Start difference. First operand has 705 places, 2606 transitions, 93958 flow. Second operand 25 states and 526 transitions. [2023-11-29 06:44:14,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 2778 transitions, 105305 flow [2023-11-29 06:44:29,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 2778 transitions, 104027 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-11-29 06:44:29,983 INFO L231 Difference]: Finished difference. Result has 735 places, 2722 transitions, 98851 flow [2023-11-29 06:44:29,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=92699, PETRI_DIFFERENCE_MINUEND_PLACES=700, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=98851, PETRI_PLACES=735, PETRI_TRANSITIONS=2722} [2023-11-29 06:44:29,985 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 700 predicate places. [2023-11-29 06:44:29,985 INFO L495 AbstractCegarLoop]: Abstraction has has 735 places, 2722 transitions, 98851 flow [2023-11-29 06:44:29,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.6) internal successors, (372), 20 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:29,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:44:29,986 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:44:29,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2023-11-29 06:44:30,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2023-11-29 06:44:30,186 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:44:30,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:44:30,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1810204519, now seen corresponding path program 70 times [2023-11-29 06:44:30,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:44:30,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175785044] [2023-11-29 06:44:30,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:30,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:44:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:44:30,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:44:30,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175785044] [2023-11-29 06:44:30,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175785044] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:44:30,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091025714] [2023-11-29 06:44:30,265 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:44:30,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:30,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:44:30,266 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:44:30,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-11-29 06:44:30,387 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:44:30,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:44:30,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:44:30,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:44:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:44:30,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:44:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:44:30,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091025714] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:44:30,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:44:30,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 16 [2023-11-29 06:44:30,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389971720] [2023-11-29 06:44:30,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:44:30,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:44:30,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:44:30,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:44:30,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:44:30,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:44:30,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 735 places, 2722 transitions, 98851 flow. Second operand has 16 states, 16 states have (on average 18.8125) internal successors, (301), 16 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:30,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:44:30,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:44:30,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:44:41,477 INFO L124 PetriNetUnfolderBase]: 5410/9490 cut-off events. [2023-11-29 06:44:41,477 INFO L125 PetriNetUnfolderBase]: For 558083/558083 co-relation queries the response was YES. [2023-11-29 06:44:41,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140358 conditions, 9490 events. 5410/9490 cut-off events. For 558083/558083 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 71532 event pairs, 272 based on Foata normal form. 27/9516 useless extension candidates. Maximal degree in co-relation 140088. Up to 6307 conditions per place. [2023-11-29 06:44:41,702 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 2189 selfloop transitions, 667 changer transitions 5/2868 dead transitions. [2023-11-29 06:44:41,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 754 places, 2868 transitions, 109593 flow [2023-11-29 06:44:41,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 06:44:41,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 06:44:41,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 453 transitions. [2023-11-29 06:44:41,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6536796536796536 [2023-11-29 06:44:41,703 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 453 transitions. [2023-11-29 06:44:41,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 453 transitions. [2023-11-29 06:44:41,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:44:41,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 453 transitions. [2023-11-29 06:44:41,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 21.571428571428573) internal successors, (453), 21 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:41,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 33.0) internal successors, (726), 22 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:41,705 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 33.0) internal successors, (726), 22 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:41,705 INFO L175 Difference]: Start difference. First operand has 735 places, 2722 transitions, 98851 flow. Second operand 21 states and 453 transitions. [2023-11-29 06:44:41,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 754 places, 2868 transitions, 109593 flow [2023-11-29 06:44:58,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 736 places, 2868 transitions, 107090 flow, removed 1128 selfloop flow, removed 18 redundant places. [2023-11-29 06:44:58,466 INFO L231 Difference]: Finished difference. Result has 742 places, 2822 transitions, 102438 flow [2023-11-29 06:44:58,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=97031, PETRI_DIFFERENCE_MINUEND_PLACES=716, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=562, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=102438, PETRI_PLACES=742, PETRI_TRANSITIONS=2822} [2023-11-29 06:44:58,469 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 707 predicate places. [2023-11-29 06:44:58,469 INFO L495 AbstractCegarLoop]: Abstraction has has 742 places, 2822 transitions, 102438 flow [2023-11-29 06:44:58,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.8125) internal successors, (301), 16 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:58,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:44:58,470 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:44:58,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2023-11-29 06:44:58,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2023-11-29 06:44:58,670 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:44:58,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:44:58,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1879611044, now seen corresponding path program 71 times [2023-11-29 06:44:58,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:44:58,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789748369] [2023-11-29 06:44:58,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:58,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:44:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:58,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:44:58,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:44:58,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789748369] [2023-11-29 06:44:58,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789748369] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:44:58,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207295444] [2023-11-29 06:44:58,749 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:44:58,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:58,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:44:58,750 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:44:58,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-11-29 06:44:58,869 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:44:58,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:44:58,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:44:58,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:44:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:44:58,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:44:58,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:44:58,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207295444] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:44:58,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:44:58,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-11-29 06:44:58,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828904556] [2023-11-29 06:44:58,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:44:58,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:44:58,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:44:58,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:44:58,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:44:58,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:44:58,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 742 places, 2822 transitions, 102438 flow. Second operand has 15 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:58,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:44:58,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:44:58,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:45:11,244 INFO L124 PetriNetUnfolderBase]: 5667/9830 cut-off events. [2023-11-29 06:45:11,245 INFO L125 PetriNetUnfolderBase]: For 582051/582052 co-relation queries the response was YES. [2023-11-29 06:45:11,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146689 conditions, 9830 events. 5667/9830 cut-off events. For 582051/582052 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 73362 event pairs, 752 based on Foata normal form. 14/9843 useless extension candidates. Maximal degree in co-relation 146426. Up to 6009 conditions per place. [2023-11-29 06:45:11,518 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 2027 selfloop transitions, 980 changer transitions 9/3023 dead transitions. [2023-11-29 06:45:11,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 3023 transitions, 115780 flow [2023-11-29 06:45:11,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:45:11,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 06:45:11,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 367 transitions. [2023-11-29 06:45:11,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6541889483065954 [2023-11-29 06:45:11,519 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 367 transitions. [2023-11-29 06:45:11,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 367 transitions. [2023-11-29 06:45:11,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:45:11,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 367 transitions. [2023-11-29 06:45:11,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 21.58823529411765) internal successors, (367), 17 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:45:11,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:45:11,521 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 33.0) internal successors, (594), 18 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:45:11,521 INFO L175 Difference]: Start difference. First operand has 742 places, 2822 transitions, 102438 flow. Second operand 17 states and 367 transitions. [2023-11-29 06:45:11,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 3023 transitions, 115780 flow [2023-11-29 06:45:29,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 748 places, 3023 transitions, 114354 flow, removed 652 selfloop flow, removed 9 redundant places. [2023-11-29 06:45:29,270 INFO L231 Difference]: Finished difference. Result has 752 places, 2958 transitions, 109720 flow [2023-11-29 06:45:29,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=101398, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=840, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1855, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=109720, PETRI_PLACES=752, PETRI_TRANSITIONS=2958} [2023-11-29 06:45:29,272 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 717 predicate places. [2023-11-29 06:45:29,272 INFO L495 AbstractCegarLoop]: Abstraction has has 752 places, 2958 transitions, 109720 flow [2023-11-29 06:45:29,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:45:29,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:45:29,272 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:45:29,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2023-11-29 06:45:29,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:45:29,473 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:45:29,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:45:29,473 INFO L85 PathProgramCache]: Analyzing trace with hash 787353034, now seen corresponding path program 72 times [2023-11-29 06:45:29,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:45:29,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206135578] [2023-11-29 06:45:29,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:45:29,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:45:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:45:29,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:45:29,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206135578] [2023-11-29 06:45:29,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206135578] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:45:29,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151633888] [2023-11-29 06:45:29,555 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:45:29,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:45:29,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:45:29,556 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:45:29,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-11-29 06:45:29,675 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 06:45:29,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:45:29,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:45:29,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:45:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:45:29,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:45:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:45:29,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151633888] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:45:29,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:45:29,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-29 06:45:29,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147644124] [2023-11-29 06:45:29,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:45:29,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 06:45:29,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:45:29,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 06:45:29,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:45:29,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:45:29,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 752 places, 2958 transitions, 109720 flow. Second operand has 20 states, 20 states have (on average 18.55) internal successors, (371), 20 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:45:29,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:45:29,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:45:29,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:45:43,480 INFO L124 PetriNetUnfolderBase]: 5809/10023 cut-off events. [2023-11-29 06:45:43,480 INFO L125 PetriNetUnfolderBase]: For 633429/633432 co-relation queries the response was YES. [2023-11-29 06:45:43,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151946 conditions, 10023 events. 5809/10023 cut-off events. For 633429/633432 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 74754 event pairs, 1472 based on Foata normal form. 101/10123 useless extension candidates. Maximal degree in co-relation 151679. Up to 8670 conditions per place. [2023-11-29 06:45:43,749 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 2846 selfloop transitions, 228 changer transitions 2/3083 dead transitions. [2023-11-29 06:45:43,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 781 places, 3083 transitions, 119369 flow [2023-11-29 06:45:43,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 06:45:43,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 06:45:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 662 transitions. [2023-11-29 06:45:43,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6471163245356794 [2023-11-29 06:45:43,750 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 662 transitions. [2023-11-29 06:45:43,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 662 transitions. [2023-11-29 06:45:43,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:45:43,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 662 transitions. [2023-11-29 06:45:43,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 21.35483870967742) internal successors, (662), 31 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:45:43,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 33.0) internal successors, (1056), 32 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:45:43,752 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 33.0) internal successors, (1056), 32 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:45:43,752 INFO L175 Difference]: Start difference. First operand has 752 places, 2958 transitions, 109720 flow. Second operand 31 states and 662 transitions. [2023-11-29 06:45:43,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 781 places, 3083 transitions, 119369 flow [2023-11-29 06:46:01,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 765 places, 3083 transitions, 116466 flow, removed 549 selfloop flow, removed 16 redundant places. [2023-11-29 06:46:01,581 INFO L231 Difference]: Finished difference. Result has 778 places, 3037 transitions, 110734 flow [2023-11-29 06:46:01,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=106071, PETRI_DIFFERENCE_MINUEND_PLACES=735, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2936, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2775, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=110734, PETRI_PLACES=778, PETRI_TRANSITIONS=3037} [2023-11-29 06:46:01,584 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 743 predicate places. [2023-11-29 06:46:01,585 INFO L495 AbstractCegarLoop]: Abstraction has has 778 places, 3037 transitions, 110734 flow [2023-11-29 06:46:01,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.55) internal successors, (371), 20 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:01,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:46:01,585 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:01,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2023-11-29 06:46:01,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2023-11-29 06:46:01,785 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:46:01,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:01,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1940705641, now seen corresponding path program 73 times [2023-11-29 06:46:01,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:01,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302884420] [2023-11-29 06:46:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:01,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:01,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:01,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302884420] [2023-11-29 06:46:01,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302884420] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:46:01,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328658826] [2023-11-29 06:46:01,868 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:46:01,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:01,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:01,869 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:46:01,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2023-11-29 06:46:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:02,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:46:02,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:02,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:02,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:46:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:02,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328658826] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:46:02,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:46:02,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2023-11-29 06:46:02,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027450846] [2023-11-29 06:46:02,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:46:02,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 06:46:02,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:02,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 06:46:02,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:46:02,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:46:02,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 778 places, 3037 transitions, 110734 flow. Second operand has 17 states, 17 states have (on average 18.823529411764707) internal successors, (320), 17 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:02,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:46:02,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:46:02,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:46:15,433 INFO L124 PetriNetUnfolderBase]: 5914/10201 cut-off events. [2023-11-29 06:46:15,433 INFO L125 PetriNetUnfolderBase]: For 593313/593313 co-relation queries the response was YES. [2023-11-29 06:46:15,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153525 conditions, 10201 events. 5914/10201 cut-off events. For 593313/593313 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 76291 event pairs, 262 based on Foata normal form. 12/10212 useless extension candidates. Maximal degree in co-relation 153252. Up to 6707 conditions per place. [2023-11-29 06:46:15,707 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 2346 selfloop transitions, 779 changer transitions 6/3138 dead transitions. [2023-11-29 06:46:15,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 799 places, 3138 transitions, 119846 flow [2023-11-29 06:46:15,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 06:46:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 06:46:15,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 474 transitions. [2023-11-29 06:46:15,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6528925619834711 [2023-11-29 06:46:15,709 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 474 transitions. [2023-11-29 06:46:15,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 474 transitions. [2023-11-29 06:46:15,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:46:15,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 474 transitions. [2023-11-29 06:46:15,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 21.545454545454547) internal successors, (474), 22 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:15,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 33.0) internal successors, (759), 23 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:15,711 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 33.0) internal successors, (759), 23 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:15,711 INFO L175 Difference]: Start difference. First operand has 778 places, 3037 transitions, 110734 flow. Second operand 22 states and 474 transitions. [2023-11-29 06:46:15,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 799 places, 3138 transitions, 119846 flow [2023-11-29 06:46:32,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 795 places, 3138 transitions, 118433 flow, removed 699 selfloop flow, removed 4 redundant places. [2023-11-29 06:46:32,729 INFO L231 Difference]: Finished difference. Result has 803 places, 3087 transitions, 113616 flow [2023-11-29 06:46:32,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=109327, PETRI_DIFFERENCE_MINUEND_PLACES=774, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3037, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=727, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=113616, PETRI_PLACES=803, PETRI_TRANSITIONS=3087} [2023-11-29 06:46:32,732 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 768 predicate places. [2023-11-29 06:46:32,732 INFO L495 AbstractCegarLoop]: Abstraction has has 803 places, 3087 transitions, 113616 flow [2023-11-29 06:46:32,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.823529411764707) internal successors, (320), 17 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:32,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:46:32,733 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:32,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2023-11-29 06:46:32,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:32,933 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:46:32,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:32,933 INFO L85 PathProgramCache]: Analyzing trace with hash -785519456, now seen corresponding path program 74 times [2023-11-29 06:46:32,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:32,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055038650] [2023-11-29 06:46:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:32,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,018 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:33,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:33,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055038650] [2023-11-29 06:46:33,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055038650] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:46:33,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535876548] [2023-11-29 06:46:33,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:46:33,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:33,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:33,019 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:46:33,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2023-11-29 06:46:33,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:46:33,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:46:33,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:46:33,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:33,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:33,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:46:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:33,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535876548] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:46:33,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:46:33,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-29 06:46:33,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899998702] [2023-11-29 06:46:33,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:46:33,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:46:33,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:33,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:46:33,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:46:33,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:46:33,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 803 places, 3087 transitions, 113616 flow. Second operand has 16 states, 16 states have (on average 18.6875) internal successors, (299), 16 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:33,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:46:33,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:46:33,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:46:46,789 INFO L124 PetriNetUnfolderBase]: 5899/10191 cut-off events. [2023-11-29 06:46:46,789 INFO L125 PetriNetUnfolderBase]: For 596003/596003 co-relation queries the response was YES. [2023-11-29 06:46:46,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153843 conditions, 10191 events. 5899/10191 cut-off events. For 596003/596003 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 76295 event pairs, 883 based on Foata normal form. 2/10192 useless extension candidates. Maximal degree in co-relation 153561. Up to 6790 conditions per place. [2023-11-29 06:46:47,074 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 2391 selfloop transitions, 722 changer transitions 8/3128 dead transitions. [2023-11-29 06:46:47,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 817 places, 3128 transitions, 120601 flow [2023-11-29 06:46:47,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:46:47,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:46:47,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 321 transitions. [2023-11-29 06:46:47,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6484848484848484 [2023-11-29 06:46:47,075 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 321 transitions. [2023-11-29 06:46:47,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 321 transitions. [2023-11-29 06:46:47,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:46:47,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 321 transitions. [2023-11-29 06:46:47,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 21.4) internal successors, (321), 15 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) [2023-11-29 06:46:47,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 33.0) internal successors, (528), 16 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) [2023-11-29 06:46:47,076 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 33.0) internal successors, (528), 16 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) [2023-11-29 06:46:47,076 INFO L175 Difference]: Start difference. First operand has 803 places, 3087 transitions, 113616 flow. Second operand 15 states and 321 transitions. [2023-11-29 06:46:47,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 817 places, 3128 transitions, 120601 flow [2023-11-29 06:47:03,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 806 places, 3128 transitions, 119350 flow, removed 325 selfloop flow, removed 11 redundant places. [2023-11-29 06:47:03,991 INFO L231 Difference]: Finished difference. Result has 806 places, 3080 transitions, 113630 flow [2023-11-29 06:47:03,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=112351, PETRI_DIFFERENCE_MINUEND_PLACES=792, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3086, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=722, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=113630, PETRI_PLACES=806, PETRI_TRANSITIONS=3080} [2023-11-29 06:47:03,993 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 771 predicate places. [2023-11-29 06:47:03,993 INFO L495 AbstractCegarLoop]: Abstraction has has 806 places, 3080 transitions, 113630 flow [2023-11-29 06:47:03,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.6875) internal successors, (299), 16 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:47:03,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:47:03,993 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:03,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2023-11-29 06:47:04,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:47:04,194 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:47:04,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:47:04,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1694279419, now seen corresponding path program 75 times [2023-11-29 06:47:04,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:47:04,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509873215] [2023-11-29 06:47:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:47:04,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:47:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:47:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:04,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:47:04,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509873215] [2023-11-29 06:47:04,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509873215] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:47:04,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119365681] [2023-11-29 06:47:04,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:47:04,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:47:04,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:47:04,275 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:47:04,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2023-11-29 06:47:04,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 06:47:04,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:47:04,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:47:04,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:47:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:04,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:47:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:04,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119365681] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:47:04,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:47:04,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-11-29 06:47:04,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125406302] [2023-11-29 06:47:04,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:47:04,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:47:04,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:47:04,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:47:04,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:47:04,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:47:04,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 806 places, 3080 transitions, 113630 flow. Second operand has 15 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:47:04,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:47:04,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:47:04,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:47:18,822 INFO L124 PetriNetUnfolderBase]: 6113/10472 cut-off events. [2023-11-29 06:47:18,823 INFO L125 PetriNetUnfolderBase]: For 640517/640517 co-relation queries the response was YES. [2023-11-29 06:47:19,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159148 conditions, 10472 events. 6113/10472 cut-off events. For 640517/640517 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 78030 event pairs, 151 based on Foata normal form. 68/10539 useless extension candidates. Maximal degree in co-relation 158868. Up to 6687 conditions per place. [2023-11-29 06:47:19,112 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 2294 selfloop transitions, 956 changer transitions 0/3257 dead transitions. [2023-11-29 06:47:19,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 827 places, 3257 transitions, 125462 flow [2023-11-29 06:47:19,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 06:47:19,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 06:47:19,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 517 transitions. [2023-11-29 06:47:19,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2023-11-29 06:47:19,114 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 517 transitions. [2023-11-29 06:47:19,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 517 transitions. [2023-11-29 06:47:19,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:47:19,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 517 transitions. [2023-11-29 06:47:19,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 21.541666666666668) internal successors, (517), 24 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) [2023-11-29 06:47:19,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 33.0) internal successors, (825), 25 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:47:19,115 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 33.0) internal successors, (825), 25 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:47:19,115 INFO L175 Difference]: Start difference. First operand has 806 places, 3080 transitions, 113630 flow. Second operand 24 states and 517 transitions. [2023-11-29 06:47:19,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 827 places, 3257 transitions, 125462 flow [2023-11-29 06:47:36,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 3257 transitions, 124569 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-11-29 06:47:36,897 INFO L231 Difference]: Finished difference. Result has 824 places, 3214 transitions, 120385 flow [2023-11-29 06:47:36,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=112054, PETRI_DIFFERENCE_MINUEND_PLACES=793, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=823, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=120385, PETRI_PLACES=824, PETRI_TRANSITIONS=3214} [2023-11-29 06:47:36,899 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 789 predicate places. [2023-11-29 06:47:36,899 INFO L495 AbstractCegarLoop]: Abstraction has has 824 places, 3214 transitions, 120385 flow [2023-11-29 06:47:36,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:47:36,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:47:36,900 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:36,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2023-11-29 06:47:37,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2023-11-29 06:47:37,100 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:47:37,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:47:37,100 INFO L85 PathProgramCache]: Analyzing trace with hash -529522415, now seen corresponding path program 76 times [2023-11-29 06:47:37,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:47:37,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285826735] [2023-11-29 06:47:37,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:47:37,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:47:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:47:37,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:37,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:47:37,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285826735] [2023-11-29 06:47:37,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285826735] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:47:37,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48804901] [2023-11-29 06:47:37,182 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:47:37,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:47:37,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:47:37,183 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:47:37,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2023-11-29 06:47:37,291 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:47:37,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:47:37,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:47:37,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:47:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:37,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:47:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:47:37,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48804901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:47:37,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:47:37,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 16 [2023-11-29 06:47:37,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691984414] [2023-11-29 06:47:37,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:47:37,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:47:37,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:47:37,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:47:37,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:47:37,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:47:37,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 3214 transitions, 120385 flow. Second operand has 16 states, 16 states have (on average 18.8125) internal successors, (301), 16 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:47:37,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:47:37,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:47:37,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:47:53,874 INFO L124 PetriNetUnfolderBase]: 6185/10618 cut-off events. [2023-11-29 06:47:53,874 INFO L125 PetriNetUnfolderBase]: For 649932/649932 co-relation queries the response was YES. [2023-11-29 06:47:54,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163006 conditions, 10618 events. 6185/10618 cut-off events. For 649932/649932 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 79512 event pairs, 235 based on Foata normal form. 18/10635 useless extension candidates. Maximal degree in co-relation 162719. Up to 7861 conditions per place. [2023-11-29 06:47:54,196 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 2680 selfloop transitions, 602 changer transitions 0/3289 dead transitions. [2023-11-29 06:47:54,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 843 places, 3289 transitions, 128847 flow [2023-11-29 06:47:54,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 06:47:54,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 06:47:54,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 424 transitions. [2023-11-29 06:47:54,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6424242424242425 [2023-11-29 06:47:54,198 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 424 transitions. [2023-11-29 06:47:54,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 424 transitions. [2023-11-29 06:47:54,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:47:54,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 424 transitions. [2023-11-29 06:47:54,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 21.2) internal successors, (424), 20 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:47:54,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 33.0) internal successors, (693), 21 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:47:54,199 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 33.0) internal successors, (693), 21 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:47:54,199 INFO L175 Difference]: Start difference. First operand has 824 places, 3214 transitions, 120385 flow. Second operand 20 states and 424 transitions. [2023-11-29 06:47:54,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 843 places, 3289 transitions, 128847 flow [2023-11-29 06:48:13,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 830 places, 3289 transitions, 125754 flow, removed 1184 selfloop flow, removed 13 redundant places. [2023-11-29 06:48:13,326 INFO L231 Difference]: Finished difference. Result has 839 places, 3256 transitions, 120218 flow [2023-11-29 06:48:13,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=117430, PETRI_DIFFERENCE_MINUEND_PLACES=811, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=558, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=120218, PETRI_PLACES=839, PETRI_TRANSITIONS=3256} [2023-11-29 06:48:13,327 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 804 predicate places. [2023-11-29 06:48:13,327 INFO L495 AbstractCegarLoop]: Abstraction has has 839 places, 3256 transitions, 120218 flow [2023-11-29 06:48:13,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.8125) internal successors, (301), 16 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:48:13,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:48:13,328 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:48:13,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2023-11-29 06:48:13,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:48:13,528 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:48:13,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:48:13,529 INFO L85 PathProgramCache]: Analyzing trace with hash 572086533, now seen corresponding path program 77 times [2023-11-29 06:48:13,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:48:13,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477334668] [2023-11-29 06:48:13,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:48:13,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:48:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:48:13,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:48:13,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:48:13,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477334668] [2023-11-29 06:48:13,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477334668] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:48:13,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258657560] [2023-11-29 06:48:13,611 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:48:13,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:48:13,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:48:13,612 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:48:13,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2023-11-29 06:48:13,727 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 06:48:13,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:48:13,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:48:13,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:48:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:48:13,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:48:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:48:13,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258657560] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:48:13,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:48:13,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-29 06:48:13,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125081255] [2023-11-29 06:48:13,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:48:13,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 06:48:13,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:48:13,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 06:48:13,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:48:13,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:48:13,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 839 places, 3256 transitions, 120218 flow. Second operand has 20 states, 20 states have (on average 18.6) internal successors, (372), 20 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:48:13,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:48:13,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:48:13,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:48:32,412 INFO L124 PetriNetUnfolderBase]: 6651/11401 cut-off events. [2023-11-29 06:48:32,412 INFO L125 PetriNetUnfolderBase]: For 645958/645958 co-relation queries the response was YES. [2023-11-29 06:48:32,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172284 conditions, 11401 events. 6651/11401 cut-off events. For 645958/645958 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 86319 event pairs, 226 based on Foata normal form. 40/11440 useless extension candidates. Maximal degree in co-relation 171989. Up to 7579 conditions per place. [2023-11-29 06:48:32,748 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 2568 selfloop transitions, 998 changer transitions 0/3573 dead transitions. [2023-11-29 06:48:32,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 873 places, 3573 transitions, 136369 flow [2023-11-29 06:48:32,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 06:48:32,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-29 06:48:32,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 751 transitions. [2023-11-29 06:48:32,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6321548821548821 [2023-11-29 06:48:32,750 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 751 transitions. [2023-11-29 06:48:32,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 751 transitions. [2023-11-29 06:48:32,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:48:32,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 751 transitions. [2023-11-29 06:48:32,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 20.86111111111111) internal successors, (751), 36 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:48:32,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 33.0) internal successors, (1221), 37 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:48:32,753 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 33.0) internal successors, (1221), 37 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:48:32,753 INFO L175 Difference]: Start difference. First operand has 839 places, 3256 transitions, 120218 flow. Second operand 36 states and 751 transitions. [2023-11-29 06:48:32,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 873 places, 3573 transitions, 136369 flow [2023-11-29 06:48:51,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 864 places, 3573 transitions, 135189 flow, removed 267 selfloop flow, removed 9 redundant places. [2023-11-29 06:48:51,521 INFO L231 Difference]: Finished difference. Result has 874 places, 3528 transitions, 130518 flow [2023-11-29 06:48:51,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=118708, PETRI_DIFFERENCE_MINUEND_PLACES=829, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=730, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=130518, PETRI_PLACES=874, PETRI_TRANSITIONS=3528} [2023-11-29 06:48:51,523 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 839 predicate places. [2023-11-29 06:48:51,523 INFO L495 AbstractCegarLoop]: Abstraction has has 874 places, 3528 transitions, 130518 flow [2023-11-29 06:48:51,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.6) internal successors, (372), 20 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:48:51,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:48:51,523 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:48:51,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2023-11-29 06:48:51,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:48:51,724 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:48:51,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:48:51,724 INFO L85 PathProgramCache]: Analyzing trace with hash 566364366, now seen corresponding path program 78 times [2023-11-29 06:48:51,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:48:51,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099599017] [2023-11-29 06:48:51,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:48:51,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:48:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:48:51,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:48:51,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:48:51,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099599017] [2023-11-29 06:48:51,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099599017] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:48:51,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966119038] [2023-11-29 06:48:51,810 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:48:51,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:48:51,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:48:51,811 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:48:51,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2023-11-29 06:48:51,926 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 06:48:51,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:48:51,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:48:51,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:48:51,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:48:51,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:48:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:48:52,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966119038] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:48:52,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:48:52,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 16 [2023-11-29 06:48:52,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112903110] [2023-11-29 06:48:52,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:48:52,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:48:52,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:48:52,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:48:52,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:48:52,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:48:52,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 3528 transitions, 130518 flow. Second operand has 16 states, 16 states have (on average 18.75) internal successors, (300), 16 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:48:52,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:48:52,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:48:52,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:49:09,926 INFO L124 PetriNetUnfolderBase]: 6812/11706 cut-off events. [2023-11-29 06:49:09,926 INFO L125 PetriNetUnfolderBase]: For 692657/692660 co-relation queries the response was YES. [2023-11-29 06:49:10,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179362 conditions, 11706 events. 6812/11706 cut-off events. For 692657/692660 co-relation queries the response was YES. Maximal size of possible extension queue 929. Compared 89187 event pairs, 1424 based on Foata normal form. 24/11729 useless extension candidates. Maximal degree in co-relation 179058. Up to 9077 conditions per place. [2023-11-29 06:49:10,229 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 2844 selfloop transitions, 799 changer transitions 7/3657 dead transitions. [2023-11-29 06:49:10,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 889 places, 3657 transitions, 142726 flow [2023-11-29 06:49:10,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 06:49:10,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 06:49:10,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 384 transitions. [2023-11-29 06:49:10,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2023-11-29 06:49:10,231 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 384 transitions. [2023-11-29 06:49:10,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 384 transitions. [2023-11-29 06:49:10,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:49:10,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 384 transitions. [2023-11-29 06:49:10,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 21.333333333333332) internal successors, (384), 18 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:49:10,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 33.0) internal successors, (627), 19 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) [2023-11-29 06:49:10,232 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 33.0) internal successors, (627), 19 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) [2023-11-29 06:49:10,232 INFO L175 Difference]: Start difference. First operand has 874 places, 3528 transitions, 130518 flow. Second operand 18 states and 384 transitions. [2023-11-29 06:49:10,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 889 places, 3657 transitions, 142726 flow [2023-11-29 06:49:29,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 880 places, 3657 transitions, 141266 flow, removed 438 selfloop flow, removed 9 redundant places. [2023-11-29 06:49:30,018 INFO L231 Difference]: Finished difference. Result has 886 places, 3608 transitions, 135771 flow [2023-11-29 06:49:30,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=128905, PETRI_DIFFERENCE_MINUEND_PLACES=863, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=705, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2726, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=135771, PETRI_PLACES=886, PETRI_TRANSITIONS=3608} [2023-11-29 06:49:30,020 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 851 predicate places. [2023-11-29 06:49:30,020 INFO L495 AbstractCegarLoop]: Abstraction has has 886 places, 3608 transitions, 135771 flow [2023-11-29 06:49:30,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.75) internal successors, (300), 16 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:49:30,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:49:30,020 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:49:30,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2023-11-29 06:49:30,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:49:30,221 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:49:30,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:49:30,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2038557299, now seen corresponding path program 79 times [2023-11-29 06:49:30,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:49:30,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53115045] [2023-11-29 06:49:30,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:49:30,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:49:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:49:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:49:30,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:49:30,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53115045] [2023-11-29 06:49:30,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53115045] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:49:30,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23586505] [2023-11-29 06:49:30,301 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:49:30,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:49:30,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:49:30,302 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:49:30,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2023-11-29 06:49:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:49:30,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:49:30,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:49:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:49:30,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:49:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:49:30,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23586505] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:49:30,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:49:30,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2023-11-29 06:49:30,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795655484] [2023-11-29 06:49:30,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:49:30,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:49:30,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:49:30,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:49:30,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:49:30,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:49:30,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 886 places, 3608 transitions, 135771 flow. Second operand has 15 states, 15 states have (on average 18.8) internal successors, (282), 15 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:49:30,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:49:30,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:49:30,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:49:51,938 INFO L124 PetriNetUnfolderBase]: 6854/11681 cut-off events. [2023-11-29 06:49:51,938 INFO L125 PetriNetUnfolderBase]: For 700451/700451 co-relation queries the response was YES. [2023-11-29 06:49:52,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181759 conditions, 11681 events. 6854/11681 cut-off events. For 700451/700451 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 88129 event pairs, 195 based on Foata normal form. 24/11704 useless extension candidates. Maximal degree in co-relation 181448. Up to 7599 conditions per place. [2023-11-29 06:49:52,335 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 2542 selfloop transitions, 1151 changer transitions 1/3701 dead transitions. [2023-11-29 06:49:52,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 910 places, 3701 transitions, 145118 flow [2023-11-29 06:49:52,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 06:49:52,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 06:49:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 547 transitions. [2023-11-29 06:49:52,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6375291375291375 [2023-11-29 06:49:52,337 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 547 transitions. [2023-11-29 06:49:52,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 547 transitions. [2023-11-29 06:49:52,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:49:52,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 547 transitions. [2023-11-29 06:49:52,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 21.03846153846154) internal successors, (547), 26 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:49:52,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 33.0) internal successors, (891), 27 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:49:52,339 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 33.0) internal successors, (891), 27 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:49:52,340 INFO L175 Difference]: Start difference. First operand has 886 places, 3608 transitions, 135771 flow. Second operand 26 states and 547 transitions. [2023-11-29 06:49:52,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 910 places, 3701 transitions, 145118 flow [2023-11-29 06:50:13,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 901 places, 3701 transitions, 143268 flow, removed 757 selfloop flow, removed 9 redundant places. [2023-11-29 06:50:14,057 INFO L231 Difference]: Finished difference. Result has 904 places, 3662 transitions, 138120 flow [2023-11-29 06:50:14,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=133840, PETRI_DIFFERENCE_MINUEND_PLACES=876, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1097, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=138120, PETRI_PLACES=904, PETRI_TRANSITIONS=3662} [2023-11-29 06:50:14,059 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 869 predicate places. [2023-11-29 06:50:14,059 INFO L495 AbstractCegarLoop]: Abstraction has has 904 places, 3662 transitions, 138120 flow [2023-11-29 06:50:14,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.8) internal successors, (282), 15 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:50:14,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:50:14,059 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:14,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2023-11-29 06:50:14,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:50:14,260 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:50:14,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:14,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1262238075, now seen corresponding path program 80 times [2023-11-29 06:50:14,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:14,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636225991] [2023-11-29 06:50:14,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:14,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:14,346 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:14,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:14,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636225991] [2023-11-29 06:50:14,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636225991] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:50:14,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058662556] [2023-11-29 06:50:14,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:50:14,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:50:14,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:50:14,347 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:50:14,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2023-11-29 06:50:14,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:50:14,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:50:14,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:50:14,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:50:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:14,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:50:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:14,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058662556] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:50:14,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:50:14,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2023-11-29 06:50:14,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848749841] [2023-11-29 06:50:14,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:50:14,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 06:50:14,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:14,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 06:50:14,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:50:14,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:50:14,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 904 places, 3662 transitions, 138120 flow. Second operand has 17 states, 17 states have (on average 18.647058823529413) internal successors, (317), 17 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:50:14,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:50:14,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:50:14,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:50:36,644 INFO L124 PetriNetUnfolderBase]: 6992/11936 cut-off events. [2023-11-29 06:50:36,644 INFO L125 PetriNetUnfolderBase]: For 710982/710982 co-relation queries the response was YES. [2023-11-29 06:50:36,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185750 conditions, 11936 events. 6992/11936 cut-off events. For 710982/710982 co-relation queries the response was YES. Maximal size of possible extension queue 959. Compared 90767 event pairs, 208 based on Foata normal form. 70/12005 useless extension candidates. Maximal degree in co-relation 185436. Up to 6927 conditions per place. [2023-11-29 06:50:37,160 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 2302 selfloop transitions, 1483 changer transitions 0/3792 dead transitions. [2023-11-29 06:50:37,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 928 places, 3792 transitions, 148778 flow [2023-11-29 06:50:37,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 06:50:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-29 06:50:37,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 574 transitions. [2023-11-29 06:50:37,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6442199775533108 [2023-11-29 06:50:37,161 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 574 transitions. [2023-11-29 06:50:37,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 574 transitions. [2023-11-29 06:50:37,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:50:37,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 574 transitions. [2023-11-29 06:50:37,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 21.25925925925926) internal successors, (574), 27 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:50:37,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 33.0) internal successors, (924), 28 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:50:37,163 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 33.0) internal successors, (924), 28 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:50:37,163 INFO L175 Difference]: Start difference. First operand has 904 places, 3662 transitions, 138120 flow. Second operand 27 states and 574 transitions. [2023-11-29 06:50:37,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 928 places, 3792 transitions, 148778 flow [2023-11-29 06:50:59,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 917 places, 3792 transitions, 148010 flow, removed 253 selfloop flow, removed 11 redundant places. [2023-11-29 06:50:59,583 INFO L231 Difference]: Finished difference. Result has 922 places, 3755 transitions, 143647 flow [2023-11-29 06:50:59,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=136034, PETRI_DIFFERENCE_MINUEND_PLACES=891, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=143647, PETRI_PLACES=922, PETRI_TRANSITIONS=3755} [2023-11-29 06:50:59,584 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 887 predicate places. [2023-11-29 06:50:59,584 INFO L495 AbstractCegarLoop]: Abstraction has has 922 places, 3755 transitions, 143647 flow [2023-11-29 06:50:59,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.647058823529413) internal successors, (317), 17 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:50:59,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:50:59,584 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:59,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2023-11-29 06:50:59,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:50:59,785 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:50:59,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:59,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2047704111, now seen corresponding path program 81 times [2023-11-29 06:50:59,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:59,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193844468] [2023-11-29 06:50:59,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:59,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:59,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:59,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193844468] [2023-11-29 06:50:59,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193844468] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:50:59,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162124665] [2023-11-29 06:50:59,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:50:59,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:50:59,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:50:59,866 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:50:59,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2023-11-29 06:50:59,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 06:50:59,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:50:59,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:50:59,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:51:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:00,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:51:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:00,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162124665] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:51:00,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:51:00,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-29 06:51:00,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663386842] [2023-11-29 06:51:00,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:51:00,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:51:00,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:00,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:51:00,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:51:00,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:51:00,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 922 places, 3755 transitions, 143647 flow. Second operand has 18 states, 18 states have (on average 18.72222222222222) internal successors, (337), 18 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:00,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:51:00,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:51:00,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:51:20,993 INFO L124 PetriNetUnfolderBase]: 7084/12098 cut-off events. [2023-11-29 06:51:20,993 INFO L125 PetriNetUnfolderBase]: For 708235/708235 co-relation queries the response was YES. [2023-11-29 06:51:21,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191829 conditions, 12098 events. 7084/12098 cut-off events. For 708235/708235 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 92206 event pairs, 297 based on Foata normal form. 6/12103 useless extension candidates. Maximal degree in co-relation 191510. Up to 8283 conditions per place. [2023-11-29 06:51:21,400 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 2901 selfloop transitions, 953 changer transitions 0/3861 dead transitions. [2023-11-29 06:51:21,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 950 places, 3861 transitions, 154206 flow [2023-11-29 06:51:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 06:51:21,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-29 06:51:21,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 603 transitions. [2023-11-29 06:51:21,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6300940438871473 [2023-11-29 06:51:21,401 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 603 transitions. [2023-11-29 06:51:21,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 603 transitions. [2023-11-29 06:51:21,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:51:21,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 603 transitions. [2023-11-29 06:51:21,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 20.79310344827586) internal successors, (603), 29 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:21,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 33.0) internal successors, (990), 30 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:21,403 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 33.0) internal successors, (990), 30 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:21,403 INFO L175 Difference]: Start difference. First operand has 922 places, 3755 transitions, 143647 flow. Second operand 29 states and 603 transitions. [2023-11-29 06:51:21,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 950 places, 3861 transitions, 154206 flow [2023-11-29 06:51:43,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 938 places, 3861 transitions, 152457 flow, removed 483 selfloop flow, removed 12 redundant places. [2023-11-29 06:51:43,248 INFO L231 Difference]: Finished difference. Result has 943 places, 3811 transitions, 146175 flow [2023-11-29 06:51:43,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=141943, PETRI_DIFFERENCE_MINUEND_PLACES=910, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=898, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2842, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=146175, PETRI_PLACES=943, PETRI_TRANSITIONS=3811} [2023-11-29 06:51:43,250 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 908 predicate places. [2023-11-29 06:51:43,250 INFO L495 AbstractCegarLoop]: Abstraction has has 943 places, 3811 transitions, 146175 flow [2023-11-29 06:51:43,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.72222222222222) internal successors, (337), 18 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:43,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:51:43,251 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:51:43,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2023-11-29 06:51:43,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:51:43,451 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:51:43,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:43,451 INFO L85 PathProgramCache]: Analyzing trace with hash 961972497, now seen corresponding path program 82 times [2023-11-29 06:51:43,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:51:43,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831295569] [2023-11-29 06:51:43,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:43,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:51:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:43,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:51:43,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831295569] [2023-11-29 06:51:43,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831295569] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:51:43,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763408078] [2023-11-29 06:51:43,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:51:43,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:51:43,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:51:43,538 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:51:43,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2023-11-29 06:51:43,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:51:43,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:51:43,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:51:43,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:51:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:43,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:51:43,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:51:43,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763408078] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:51:43,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:51:43,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 16 [2023-11-29 06:51:43,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916929158] [2023-11-29 06:51:43,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:51:43,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:51:43,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:51:43,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:51:43,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:51:43,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:51:43,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 943 places, 3811 transitions, 146175 flow. Second operand has 16 states, 16 states have (on average 18.75) internal successors, (300), 16 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:51:43,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:51:43,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:51:43,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:52:05,679 INFO L124 PetriNetUnfolderBase]: 7100/12131 cut-off events. [2023-11-29 06:52:05,679 INFO L125 PetriNetUnfolderBase]: For 704697/704697 co-relation queries the response was YES. [2023-11-29 06:52:05,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192786 conditions, 12131 events. 7100/12131 cut-off events. For 704697/704697 co-relation queries the response was YES. Maximal size of possible extension queue 974. Compared 92587 event pairs, 444 based on Foata normal form. 9/12139 useless extension candidates. Maximal degree in co-relation 192463. Up to 7321 conditions per place. [2023-11-29 06:52:06,041 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 2757 selfloop transitions, 1084 changer transitions 7/3855 dead transitions. [2023-11-29 06:52:06,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 960 places, 3855 transitions, 154884 flow [2023-11-29 06:52:06,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 06:52:06,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 06:52:06,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 408 transitions. [2023-11-29 06:52:06,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6507177033492823 [2023-11-29 06:52:06,043 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 408 transitions. [2023-11-29 06:52:06,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 408 transitions. [2023-11-29 06:52:06,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:52:06,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 408 transitions. [2023-11-29 06:52:06,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 21.473684210526315) internal successors, (408), 19 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:52:06,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 33.0) internal successors, (660), 20 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:52:06,044 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 33.0) internal successors, (660), 20 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:52:06,044 INFO L175 Difference]: Start difference. First operand has 943 places, 3811 transitions, 146175 flow. Second operand 19 states and 408 transitions. [2023-11-29 06:52:06,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 960 places, 3855 transitions, 154884 flow [2023-11-29 06:52:28,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 952 places, 3855 transitions, 153416 flow, removed 141 selfloop flow, removed 8 redundant places. [2023-11-29 06:52:28,226 INFO L231 Difference]: Finished difference. Result has 953 places, 3814 transitions, 146999 flow [2023-11-29 06:52:28,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=144674, PETRI_DIFFERENCE_MINUEND_PLACES=934, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=146999, PETRI_PLACES=953, PETRI_TRANSITIONS=3814} [2023-11-29 06:52:28,228 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 918 predicate places. [2023-11-29 06:52:28,228 INFO L495 AbstractCegarLoop]: Abstraction has has 953 places, 3814 transitions, 146999 flow [2023-11-29 06:52:28,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.75) internal successors, (300), 16 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:52:28,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:52:28,228 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:52:28,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2023-11-29 06:52:28,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2023-11-29 06:52:28,429 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 06:52:28,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:52:28,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1639449746, now seen corresponding path program 83 times [2023-11-29 06:52:28,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:52:28,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773103946] [2023-11-29 06:52:28,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:52:28,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:52:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:52:28,509 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:52:28,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:52:28,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773103946] [2023-11-29 06:52:28,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773103946] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:52:28,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332875617] [2023-11-29 06:52:28,509 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:52:28,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:52:28,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:52:28,510 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:52:28,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c49ea97-4665-40eb-91aa-209522f6fd53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2023-11-29 06:52:28,627 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 06:52:28,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:52:28,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:52:28,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:52:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:52:28,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:52:28,713 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:52:28,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332875617] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:52:28,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:52:28,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 16 [2023-11-29 06:52:28,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764966970] [2023-11-29 06:52:28,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:52:28,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:52:28,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:52:28,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:52:28,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:52:28,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 33 [2023-11-29 06:52:28,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 953 places, 3814 transitions, 146999 flow. Second operand has 16 states, 16 states have (on average 18.75) internal successors, (300), 16 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:52:28,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:52:28,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 33 [2023-11-29 06:52:28,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:52:49,819 INFO L124 PetriNetUnfolderBase]: 7111/12238 cut-off events. [2023-11-29 06:52:49,819 INFO L125 PetriNetUnfolderBase]: For 726121/726125 co-relation queries the response was YES. [2023-11-29 06:52:50,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193982 conditions, 12238 events. 7111/12238 cut-off events. For 726121/726125 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 94227 event pairs, 1528 based on Foata normal form. 40/12277 useless extension candidates. Maximal degree in co-relation 193658. Up to 9496 conditions per place. [2023-11-29 06:52:50,193 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 3013 selfloop transitions, 859 changer transitions 0/3879 dead transitions. [2023-11-29 06:52:50,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 974 places, 3879 transitions, 155812 flow [2023-11-29 06:52:50,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 06:52:50,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-29 06:52:50,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 572 transitions. [2023-11-29 06:52:50,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2023-11-29 06:52:50,194 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 572 transitions. [2023-11-29 06:52:50,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 572 transitions. [2023-11-29 06:52:50,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:52:50,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 572 transitions. [2023-11-29 06:52:50,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 21.185185185185187) internal successors, (572), 27 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:52:50,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 33.0) internal successors, (924), 28 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:52:50,196 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 33.0) internal successors, (924), 28 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:52:50,197 INFO L175 Difference]: Start difference. First operand has 953 places, 3814 transitions, 146999 flow. Second operand 27 states and 572 transitions. [2023-11-29 06:52:50,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 974 places, 3879 transitions, 155812 flow