./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI --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 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:40:55,374 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:40:55,447 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:40:55,452 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:40:55,453 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:40:55,481 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:40:55,482 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:40:55,483 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:40:55,484 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:40:55,485 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:40:55,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:40:55,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:40:55,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:40:55,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:40:55,491 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:40:55,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:40:55,493 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:40:55,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:40:55,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:40:55,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:40:55,499 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:40:55,500 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:40:55,500 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:40:55,500 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:40:55,501 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:40:55,501 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:40:55,502 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:40:55,502 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:40:55,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:40:55,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:40:55,505 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:40:55,505 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:40:55,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:40:55,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:40:55,506 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:40:55,506 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:40:55,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:40:55,507 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:40:55,507 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:40:55,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:40:55,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:40:55,508 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_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc [2023-11-24 21:40:55,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:40:55,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:40:55,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:40:55,877 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:40:55,878 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:40:55,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2023-11-24 21:40:59,094 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:40:59,335 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:40:59,336 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2023-11-24 21:40:59,343 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/data/696a8ea72/e2613b15557c4967b619d129402e9222/FLAG2f6f3fe68 [2023-11-24 21:40:59,358 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/data/696a8ea72/e2613b15557c4967b619d129402e9222 [2023-11-24 21:40:59,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:40:59,363 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:40:59,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:40:59,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:40:59,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:40:59,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:40:59" (1/1) ... [2023-11-24 21:40:59,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd05095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:59, skipping insertion in model container [2023-11-24 21:40:59,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:40:59" (1/1) ... [2023-11-24 21:40:59,400 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:40:59,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:40:59,701 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:40:59,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:40:59,768 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:40:59,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:59 WrapperNode [2023-11-24 21:40:59,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:40:59,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:40:59,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:40:59,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:40:59,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:59" (1/1) ... [2023-11-24 21:40:59,790 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:59" (1/1) ... [2023-11-24 21:40:59,838 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-11-24 21:40:59,838 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:40:59,839 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:40:59,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:40:59,844 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:40:59,860 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:59" (1/1) ... [2023-11-24 21:40:59,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:59" (1/1) ... [2023-11-24 21:40:59,869 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:59" (1/1) ... [2023-11-24 21:40:59,887 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-24 21:40:59,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:59" (1/1) ... [2023-11-24 21:40:59,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:59" (1/1) ... [2023-11-24 21:40:59,894 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:59" (1/1) ... [2023-11-24 21:40:59,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:59" (1/1) ... [2023-11-24 21:40:59,900 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:59" (1/1) ... [2023-11-24 21:40:59,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:59" (1/1) ... [2023-11-24 21:40:59,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:40:59,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:40:59,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:40:59,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:40:59,907 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:59" (1/1) ... [2023-11-24 21:40:59,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:40:59,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:40:59,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:40:59,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:40:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:40:59,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 21:40:59,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 21:40:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 21:40:59,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 21:40:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 21:40:59,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 21:40:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:40:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:40:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:40:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:40:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:40:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:40:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:40:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:40:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:40:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:40:59,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:40:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:40:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:40:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:40:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 21:40:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:40:59,995 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:41:00,179 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:41:00,182 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:41:00,574 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:41:00,764 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:41:00,764 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-24 21:41:00,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:41:00 BoogieIcfgContainer [2023-11-24 21:41:00,765 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:41:00,768 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:41:00,769 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:41:00,772 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:41:00,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:40:59" (1/3) ... [2023-11-24 21:41:00,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cebbc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:41:00, skipping insertion in model container [2023-11-24 21:41:00,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:59" (2/3) ... [2023-11-24 21:41:00,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cebbc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:41:00, skipping insertion in model container [2023-11-24 21:41:00,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:41:00" (3/3) ... [2023-11-24 21:41:00,776 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2023-11-24 21:41:00,798 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:41:00,798 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-24 21:41:00,798 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:41:00,851 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 21:41:00,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 47 transitions, 115 flow [2023-11-24 21:41:00,925 INFO L124 PetriNetUnfolderBase]: 3/44 cut-off events. [2023-11-24 21:41:00,926 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-24 21:41:00,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 3/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-24 21:41:00,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 47 transitions, 115 flow [2023-11-24 21:41:00,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 43 transitions, 104 flow [2023-11-24 21:41:00,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:41:00,965 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;@b87aaa6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:41:00,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-24 21:41:00,971 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:41:00,972 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:41:00,972 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:41:00,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:00,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:41:00,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:00,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:00,980 INFO L85 PathProgramCache]: Analyzing trace with hash 9893, now seen corresponding path program 1 times [2023-11-24 21:41:00,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:00,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8199319] [2023-11-24 21:41:00,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:00,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:01,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:01,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8199319] [2023-11-24 21:41:01,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8199319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:01,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:01,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:41:01,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320607289] [2023-11-24 21:41:01,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:01,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:01,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:01,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:01,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:01,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2023-11-24 21:41:01,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:01,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:01,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2023-11-24 21:41:01,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:01,725 INFO L124 PetriNetUnfolderBase]: 280/493 cut-off events. [2023-11-24 21:41:01,725 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-24 21:41:01,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 493 events. 280/493 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1658 event pairs, 178 based on Foata normal form. 1/348 useless extension candidates. Maximal degree in co-relation 792. Up to 401 conditions per place. [2023-11-24 21:41:01,737 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 21 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-11-24 21:41:01,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 140 flow [2023-11-24 21:41:01,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:01,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:01,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2023-11-24 21:41:01,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624113475177305 [2023-11-24 21:41:01,752 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 88 transitions. [2023-11-24 21:41:01,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 88 transitions. [2023-11-24 21:41:01,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:01,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 88 transitions. [2023-11-24 21:41:01,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:01,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:01,769 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:01,771 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 104 flow. Second operand 3 states and 88 transitions. [2023-11-24 21:41:01,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 140 flow [2023-11-24 21:41:01,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 128 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-24 21:41:01,783 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 86 flow [2023-11-24 21:41:01,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-11-24 21:41:01,792 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -8 predicate places. [2023-11-24 21:41:01,792 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 86 flow [2023-11-24 21:41:01,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:01,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:01,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:41:01,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:41:01,794 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:01,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:01,795 INFO L85 PathProgramCache]: Analyzing trace with hash 9894, now seen corresponding path program 1 times [2023-11-24 21:41:01,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:01,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868267577] [2023-11-24 21:41:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:01,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:01,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:01,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868267577] [2023-11-24 21:41:01,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868267577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:01,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:01,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:41:01,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375892845] [2023-11-24 21:41:01,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:01,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:01,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:01,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:01,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:02,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2023-11-24 21:41:02,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:02,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2023-11-24 21:41:02,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:02,159 INFO L124 PetriNetUnfolderBase]: 199/368 cut-off events. [2023-11-24 21:41:02,160 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2023-11-24 21:41:02,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 368 events. 199/368 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1205 event pairs, 124 based on Foata normal form. 28/281 useless extension candidates. Maximal degree in co-relation 671. Up to 292 conditions per place. [2023-11-24 21:41:02,165 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 19 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-11-24 21:41:02,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 122 flow [2023-11-24 21:41:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:02,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2023-11-24 21:41:02,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2023-11-24 21:41:02,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 91 transitions. [2023-11-24 21:41:02,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 91 transitions. [2023-11-24 21:41:02,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:02,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 91 transitions. [2023-11-24 21:41:02,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,172 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,172 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 86 flow. Second operand 3 states and 91 transitions. [2023-11-24 21:41:02,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 122 flow [2023-11-24 21:41:02,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 121 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:02,175 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 83 flow [2023-11-24 21:41:02,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-24 21:41:02,176 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -9 predicate places. [2023-11-24 21:41:02,176 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 83 flow [2023-11-24 21:41:02,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:02,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:41:02,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:41:02,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:02,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:02,179 INFO L85 PathProgramCache]: Analyzing trace with hash 294989954, now seen corresponding path program 1 times [2023-11-24 21:41:02,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:02,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662047881] [2023-11-24 21:41:02,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:02,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:02,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:02,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662047881] [2023-11-24 21:41:02,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662047881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:02,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:02,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:41:02,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754577904] [2023-11-24 21:41:02,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:02,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:02,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:02,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:02,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:02,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2023-11-24 21:41:02,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:02,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2023-11-24 21:41:02,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:02,468 INFO L124 PetriNetUnfolderBase]: 220/389 cut-off events. [2023-11-24 21:41:02,468 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-24 21:41:02,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 389 events. 220/389 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1199 event pairs, 138 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 725. Up to 325 conditions per place. [2023-11-24 21:41:02,477 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 21 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-11-24 21:41:02,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 123 flow [2023-11-24 21:41:02,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:02,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-24 21:41:02,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2023-11-24 21:41:02,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-24 21:41:02,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-24 21:41:02,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:02,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-24 21:41:02,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,483 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 83 flow. Second operand 3 states and 87 transitions. [2023-11-24 21:41:02,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 123 flow [2023-11-24 21:41:02,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:02,486 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 80 flow [2023-11-24 21:41:02,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-11-24 21:41:02,487 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -10 predicate places. [2023-11-24 21:41:02,488 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 80 flow [2023-11-24 21:41:02,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:02,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:41:02,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:41:02,489 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:02,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:02,490 INFO L85 PathProgramCache]: Analyzing trace with hash 294989955, now seen corresponding path program 1 times [2023-11-24 21:41:02,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:02,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057692118] [2023-11-24 21:41:02,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:02,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:02,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:02,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:02,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057692118] [2023-11-24 21:41:02,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057692118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:02,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:02,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:41:02,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145047751] [2023-11-24 21:41:02,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:02,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:02,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:02,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:02,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:02,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2023-11-24 21:41:02,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:02,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2023-11-24 21:41:02,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:02,733 INFO L124 PetriNetUnfolderBase]: 199/352 cut-off events. [2023-11-24 21:41:02,733 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2023-11-24 21:41:02,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 352 events. 199/352 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1078 event pairs, 124 based on Foata normal form. 9/262 useless extension candidates. Maximal degree in co-relation 655. Up to 292 conditions per place. [2023-11-24 21:41:02,737 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 19 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-11-24 21:41:02,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 33 transitions, 116 flow [2023-11-24 21:41:02,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:02,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2023-11-24 21:41:02,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2023-11-24 21:41:02,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 91 transitions. [2023-11-24 21:41:02,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 91 transitions. [2023-11-24 21:41:02,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:02,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 91 transitions. [2023-11-24 21:41:02,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,745 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 80 flow. Second operand 3 states and 91 transitions. [2023-11-24 21:41:02,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 33 transitions, 116 flow [2023-11-24 21:41:02,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:02,749 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 77 flow [2023-11-24 21:41:02,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-11-24 21:41:02,751 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -11 predicate places. [2023-11-24 21:41:02,752 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 77 flow [2023-11-24 21:41:02,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:02,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:02,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:41:02,755 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:02,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:02,756 INFO L85 PathProgramCache]: Analyzing trace with hash 542902329, now seen corresponding path program 1 times [2023-11-24 21:41:02,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:02,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544354587] [2023-11-24 21:41:02,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:02,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:02,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:02,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544354587] [2023-11-24 21:41:02,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544354587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:02,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:02,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:41:02,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439476668] [2023-11-24 21:41:02,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:02,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:02,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:02,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:02,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:02,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2023-11-24 21:41:02,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:02,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2023-11-24 21:41:02,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:02,975 INFO L124 PetriNetUnfolderBase]: 220/369 cut-off events. [2023-11-24 21:41:02,975 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-24 21:41:02,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 369 events. 220/369 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1062 event pairs, 138 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 705. Up to 325 conditions per place. [2023-11-24 21:41:02,979 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 21 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-11-24 21:41:02,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 31 transitions, 117 flow [2023-11-24 21:41:02,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:02,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-24 21:41:02,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2023-11-24 21:41:02,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-24 21:41:02,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-24 21:41:02,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:02,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-24 21:41:02,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,984 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,984 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 77 flow. Second operand 3 states and 87 transitions. [2023-11-24 21:41:02,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 31 transitions, 117 flow [2023-11-24 21:41:02,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:02,986 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 74 flow [2023-11-24 21:41:02,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-11-24 21:41:02,987 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -12 predicate places. [2023-11-24 21:41:02,987 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 74 flow [2023-11-24 21:41:02,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:02,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:02,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:41:02,988 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:02,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:02,989 INFO L85 PathProgramCache]: Analyzing trace with hash 542902330, now seen corresponding path program 1 times [2023-11-24 21:41:02,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:02,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781182825] [2023-11-24 21:41:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:02,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:03,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:03,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781182825] [2023-11-24 21:41:03,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781182825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:03,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:03,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:41:03,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841065743] [2023-11-24 21:41:03,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:03,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:03,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:03,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:03,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:03,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2023-11-24 21:41:03,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:03,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:03,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2023-11-24 21:41:03,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:03,191 INFO L124 PetriNetUnfolderBase]: 199/336 cut-off events. [2023-11-24 21:41:03,191 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2023-11-24 21:41:03,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 336 events. 199/336 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 956 event pairs, 124 based on Foata normal form. 11/264 useless extension candidates. Maximal degree in co-relation 639. Up to 292 conditions per place. [2023-11-24 21:41:03,195 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 19 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-24 21:41:03,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 110 flow [2023-11-24 21:41:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2023-11-24 21:41:03,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2023-11-24 21:41:03,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 91 transitions. [2023-11-24 21:41:03,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 91 transitions. [2023-11-24 21:41:03,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:03,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 91 transitions. [2023-11-24 21:41:03,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:03,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:03,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:03,202 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 74 flow. Second operand 3 states and 91 transitions. [2023-11-24 21:41:03,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 110 flow [2023-11-24 21:41:03,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 109 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:03,203 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 71 flow [2023-11-24 21:41:03,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-11-24 21:41:03,208 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -13 predicate places. [2023-11-24 21:41:03,208 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 71 flow [2023-11-24 21:41:03,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:03,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:03,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:03,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:41:03,209 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:03,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:03,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1724716316, now seen corresponding path program 1 times [2023-11-24 21:41:03,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:03,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969137836] [2023-11-24 21:41:03,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:03,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:03,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:03,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969137836] [2023-11-24 21:41:03,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969137836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:03,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:03,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:41:03,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599437575] [2023-11-24 21:41:03,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:03,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:03,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:03,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:03,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:03,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:03,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:03,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:03,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:03,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:03,731 INFO L124 PetriNetUnfolderBase]: 386/615 cut-off events. [2023-11-24 21:41:03,731 INFO L125 PetriNetUnfolderBase]: For 17/19 co-relation queries the response was YES. [2023-11-24 21:41:03,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 615 events. 386/615 cut-off events. For 17/19 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2185 event pairs, 124 based on Foata normal form. 1/457 useless extension candidates. Maximal degree in co-relation 1200. Up to 349 conditions per place. [2023-11-24 21:41:03,736 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 32 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2023-11-24 21:41:03,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 184 flow [2023-11-24 21:41:03,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:03,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:03,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2023-11-24 21:41:03,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8014184397163121 [2023-11-24 21:41:03,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2023-11-24 21:41:03,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2023-11-24 21:41:03,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:03,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2023-11-24 21:41:03,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:03,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:03,740 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:03,740 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 71 flow. Second operand 3 states and 113 transitions. [2023-11-24 21:41:03,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 184 flow [2023-11-24 21:41:03,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:03,742 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 96 flow [2023-11-24 21:41:03,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-11-24 21:41:03,743 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -11 predicate places. [2023-11-24 21:41:03,743 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 96 flow [2023-11-24 21:41:03,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:03,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:03,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:03,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:41:03,744 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:03,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:03,744 INFO L85 PathProgramCache]: Analyzing trace with hash 205496359, now seen corresponding path program 1 times [2023-11-24 21:41:03,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:03,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102745966] [2023-11-24 21:41:03,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:03,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:03,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:03,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102745966] [2023-11-24 21:41:03,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102745966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:03,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:03,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:41:03,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716792986] [2023-11-24 21:41:03,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:03,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:41:03,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:03,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:41:03,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:41:03,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:03,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:03,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:03,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:03,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:04,094 INFO L124 PetriNetUnfolderBase]: 520/789 cut-off events. [2023-11-24 21:41:04,110 INFO L125 PetriNetUnfolderBase]: For 163/167 co-relation queries the response was YES. [2023-11-24 21:41:04,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 789 events. 520/789 cut-off events. For 163/167 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2814 event pairs, 156 based on Foata normal form. 16/791 useless extension candidates. Maximal degree in co-relation 1862. Up to 536 conditions per place. [2023-11-24 21:41:04,118 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 45 selfloop transitions, 12 changer transitions 0/66 dead transitions. [2023-11-24 21:41:04,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 309 flow [2023-11-24 21:41:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:41:04,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:41:04,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2023-11-24 21:41:04,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7489361702127659 [2023-11-24 21:41:04,119 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 176 transitions. [2023-11-24 21:41:04,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 176 transitions. [2023-11-24 21:41:04,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:04,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 176 transitions. [2023-11-24 21:41:04,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:04,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 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) [2023-11-24 21:41:04,122 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 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) [2023-11-24 21:41:04,122 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 96 flow. Second operand 5 states and 176 transitions. [2023-11-24 21:41:04,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 309 flow [2023-11-24 21:41:04,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 66 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:04,125 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 178 flow [2023-11-24 21:41:04,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2023-11-24 21:41:04,126 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-11-24 21:41:04,126 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 178 flow [2023-11-24 21:41:04,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:04,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:04,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:04,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:41:04,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:04,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:04,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1634945746, now seen corresponding path program 1 times [2023-11-24 21:41:04,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:04,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106273322] [2023-11-24 21:41:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:04,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:04,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:04,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106273322] [2023-11-24 21:41:04,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106273322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:04,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:04,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:41:04,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804946359] [2023-11-24 21:41:04,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:04,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:41:04,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:04,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:41:04,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:41:04,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:04,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:04,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:04,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:04,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:04,517 INFO L124 PetriNetUnfolderBase]: 546/884 cut-off events. [2023-11-24 21:41:04,517 INFO L125 PetriNetUnfolderBase]: For 912/919 co-relation queries the response was YES. [2023-11-24 21:41:04,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2598 conditions, 884 events. 546/884 cut-off events. For 912/919 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3627 event pairs, 195 based on Foata normal form. 66/938 useless extension candidates. Maximal degree in co-relation 2582. Up to 373 conditions per place. [2023-11-24 21:41:04,526 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 50 selfloop transitions, 10 changer transitions 5/74 dead transitions. [2023-11-24 21:41:04,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 74 transitions, 407 flow [2023-11-24 21:41:04,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:41:04,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:41:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2023-11-24 21:41:04,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.774468085106383 [2023-11-24 21:41:04,528 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 182 transitions. [2023-11-24 21:41:04,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 182 transitions. [2023-11-24 21:41:04,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:04,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 182 transitions. [2023-11-24 21:41:04,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:04,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 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) [2023-11-24 21:41:04,531 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 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) [2023-11-24 21:41:04,531 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 178 flow. Second operand 5 states and 182 transitions. [2023-11-24 21:41:04,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 74 transitions, 407 flow [2023-11-24 21:41:04,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 74 transitions, 395 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-24 21:41:04,542 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 221 flow [2023-11-24 21:41:04,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-11-24 21:41:04,544 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-11-24 21:41:04,544 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 221 flow [2023-11-24 21:41:04,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:04,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:04,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:04,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:41:04,546 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:04,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:04,546 INFO L85 PathProgramCache]: Analyzing trace with hash 227331509, now seen corresponding path program 2 times [2023-11-24 21:41:04,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:04,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989354403] [2023-11-24 21:41:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:04,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:04,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:04,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989354403] [2023-11-24 21:41:04,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989354403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:04,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:04,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:41:04,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902050402] [2023-11-24 21:41:04,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:04,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:41:04,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:04,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:41:04,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:41:04,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:04,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 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) [2023-11-24 21:41:04,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:04,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:04,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:05,005 INFO L124 PetriNetUnfolderBase]: 623/1011 cut-off events. [2023-11-24 21:41:05,005 INFO L125 PetriNetUnfolderBase]: For 2030/2032 co-relation queries the response was YES. [2023-11-24 21:41:05,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3532 conditions, 1011 events. 623/1011 cut-off events. For 2030/2032 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4324 event pairs, 153 based on Foata normal form. 43/1045 useless extension candidates. Maximal degree in co-relation 3513. Up to 520 conditions per place. [2023-11-24 21:41:05,015 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 49 selfloop transitions, 9 changer transitions 12/79 dead transitions. [2023-11-24 21:41:05,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 79 transitions, 536 flow [2023-11-24 21:41:05,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:41:05,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:41:05,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2023-11-24 21:41:05,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7925531914893617 [2023-11-24 21:41:05,017 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 149 transitions. [2023-11-24 21:41:05,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 149 transitions. [2023-11-24 21:41:05,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:05,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 149 transitions. [2023-11-24 21:41:05,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:05,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:05,020 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:05,020 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 221 flow. Second operand 4 states and 149 transitions. [2023-11-24 21:41:05,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 79 transitions, 536 flow [2023-11-24 21:41:05,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 504 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:05,031 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 263 flow [2023-11-24 21:41:05,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-11-24 21:41:05,033 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2023-11-24 21:41:05,033 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 263 flow [2023-11-24 21:41:05,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 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) [2023-11-24 21:41:05,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:05,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:05,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:41:05,034 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:05,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:05,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1724221859, now seen corresponding path program 3 times [2023-11-24 21:41:05,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:05,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307831343] [2023-11-24 21:41:05,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:05,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:05,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:05,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:05,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307831343] [2023-11-24 21:41:05,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307831343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:05,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:05,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:41:05,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006375689] [2023-11-24 21:41:05,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:05,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:41:05,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:05,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:41:05,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:41:05,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:05,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:05,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:05,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:05,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:05,485 INFO L124 PetriNetUnfolderBase]: 706/1125 cut-off events. [2023-11-24 21:41:05,485 INFO L125 PetriNetUnfolderBase]: For 3798/3804 co-relation queries the response was YES. [2023-11-24 21:41:05,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4243 conditions, 1125 events. 706/1125 cut-off events. For 3798/3804 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4773 event pairs, 241 based on Foata normal form. 16/1124 useless extension candidates. Maximal degree in co-relation 4222. Up to 711 conditions per place. [2023-11-24 21:41:05,496 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 46 selfloop transitions, 21 changer transitions 3/79 dead transitions. [2023-11-24 21:41:05,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 79 transitions, 594 flow [2023-11-24 21:41:05,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:41:05,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:41:05,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2023-11-24 21:41:05,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7446808510638298 [2023-11-24 21:41:05,498 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 175 transitions. [2023-11-24 21:41:05,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 175 transitions. [2023-11-24 21:41:05,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:05,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 175 transitions. [2023-11-24 21:41:05,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:05,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 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) [2023-11-24 21:41:05,500 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 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) [2023-11-24 21:41:05,501 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 263 flow. Second operand 5 states and 175 transitions. [2023-11-24 21:41:05,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 79 transitions, 594 flow [2023-11-24 21:41:05,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 79 transitions, 581 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:05,508 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 439 flow [2023-11-24 21:41:05,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=439, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-11-24 21:41:05,509 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-11-24 21:41:05,509 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 439 flow [2023-11-24 21:41:05,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:05,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:05,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:05,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:41:05,510 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:05,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:05,511 INFO L85 PathProgramCache]: Analyzing trace with hash 810954214, now seen corresponding path program 2 times [2023-11-24 21:41:05,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:05,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176498928] [2023-11-24 21:41:05,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:05,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:05,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:05,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176498928] [2023-11-24 21:41:05,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176498928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:05,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:05,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:41:05,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366972813] [2023-11-24 21:41:05,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:05,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:41:05,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:05,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:41:05,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:41:05,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:05,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 439 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 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) [2023-11-24 21:41:05,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:05,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:05,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:05,907 INFO L124 PetriNetUnfolderBase]: 774/1236 cut-off events. [2023-11-24 21:41:05,908 INFO L125 PetriNetUnfolderBase]: For 4764/4766 co-relation queries the response was YES. [2023-11-24 21:41:05,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5514 conditions, 1236 events. 774/1236 cut-off events. For 4764/4766 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5394 event pairs, 161 based on Foata normal form. 36/1264 useless extension candidates. Maximal degree in co-relation 5490. Up to 765 conditions per place. [2023-11-24 21:41:05,922 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 60 selfloop transitions, 12 changer transitions 11/92 dead transitions. [2023-11-24 21:41:05,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 92 transitions, 847 flow [2023-11-24 21:41:05,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:41:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:41:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2023-11-24 21:41:05,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7872340425531915 [2023-11-24 21:41:05,924 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 148 transitions. [2023-11-24 21:41:05,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 148 transitions. [2023-11-24 21:41:05,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:05,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 148 transitions. [2023-11-24 21:41:05,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:05,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:05,926 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:05,926 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 439 flow. Second operand 4 states and 148 transitions. [2023-11-24 21:41:05,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 92 transitions, 847 flow [2023-11-24 21:41:05,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 92 transitions, 807 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-11-24 21:41:05,947 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 513 flow [2023-11-24 21:41:05,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=513, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-11-24 21:41:05,950 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 14 predicate places. [2023-11-24 21:41:05,951 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 513 flow [2023-11-24 21:41:05,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 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) [2023-11-24 21:41:05,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:05,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:05,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:41:05,952 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:05,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:05,953 INFO L85 PathProgramCache]: Analyzing trace with hash -994937081, now seen corresponding path program 4 times [2023-11-24 21:41:05,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:05,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974483834] [2023-11-24 21:41:05,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:05,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:06,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:06,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:06,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974483834] [2023-11-24 21:41:06,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974483834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:06,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:06,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:41:06,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846914348] [2023-11-24 21:41:06,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:06,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:41:06,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:06,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:41:06,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:41:06,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:06,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 513 flow. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:06,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:06,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:06,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:06,402 INFO L124 PetriNetUnfolderBase]: 782/1279 cut-off events. [2023-11-24 21:41:06,402 INFO L125 PetriNetUnfolderBase]: For 6562/6584 co-relation queries the response was YES. [2023-11-24 21:41:06,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5613 conditions, 1279 events. 782/1279 cut-off events. For 6562/6584 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5819 event pairs, 250 based on Foata normal form. 38/1301 useless extension candidates. Maximal degree in co-relation 5586. Up to 620 conditions per place. [2023-11-24 21:41:06,416 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 57 selfloop transitions, 16 changer transitions 8/90 dead transitions. [2023-11-24 21:41:06,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 90 transitions, 798 flow [2023-11-24 21:41:06,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:41:06,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:41:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2023-11-24 21:41:06,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7574468085106383 [2023-11-24 21:41:06,419 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 178 transitions. [2023-11-24 21:41:06,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 178 transitions. [2023-11-24 21:41:06,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:06,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 178 transitions. [2023-11-24 21:41:06,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:06,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 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) [2023-11-24 21:41:06,422 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 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) [2023-11-24 21:41:06,422 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 513 flow. Second operand 5 states and 178 transitions. [2023-11-24 21:41:06,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 90 transitions, 798 flow [2023-11-24 21:41:06,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 90 transitions, 790 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:06,437 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 561 flow [2023-11-24 21:41:06,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=561, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-11-24 21:41:06,439 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 19 predicate places. [2023-11-24 21:41:06,439 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 561 flow [2023-11-24 21:41:06,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:06,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:06,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:06,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:41:06,440 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:06,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:06,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2022040664, now seen corresponding path program 3 times [2023-11-24 21:41:06,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:06,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573230149] [2023-11-24 21:41:06,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:06,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:06,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:06,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573230149] [2023-11-24 21:41:06,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573230149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:06,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:06,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:41:06,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325552432] [2023-11-24 21:41:06,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:06,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:41:06,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:06,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:41:06,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:41:06,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:06,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 561 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 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) [2023-11-24 21:41:06,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:06,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:06,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:06,853 INFO L124 PetriNetUnfolderBase]: 773/1214 cut-off events. [2023-11-24 21:41:06,854 INFO L125 PetriNetUnfolderBase]: For 8519/8525 co-relation queries the response was YES. [2023-11-24 21:41:06,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6106 conditions, 1214 events. 773/1214 cut-off events. For 8519/8525 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5188 event pairs, 261 based on Foata normal form. 40/1237 useless extension candidates. Maximal degree in co-relation 6077. Up to 749 conditions per place. [2023-11-24 21:41:06,868 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 48 selfloop transitions, 24 changer transitions 9/90 dead transitions. [2023-11-24 21:41:06,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 90 transitions, 956 flow [2023-11-24 21:41:06,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:41:06,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:41:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2023-11-24 21:41:06,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7659574468085106 [2023-11-24 21:41:06,870 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 144 transitions. [2023-11-24 21:41:06,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 144 transitions. [2023-11-24 21:41:06,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:06,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 144 transitions. [2023-11-24 21:41:06,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:06,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:06,872 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:06,872 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 561 flow. Second operand 4 states and 144 transitions. [2023-11-24 21:41:06,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 90 transitions, 956 flow [2023-11-24 21:41:06,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 90 transitions, 894 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-24 21:41:06,892 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 635 flow [2023-11-24 21:41:06,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=635, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2023-11-24 21:41:06,893 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 19 predicate places. [2023-11-24 21:41:06,893 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 635 flow [2023-11-24 21:41:06,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 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) [2023-11-24 21:41:06,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:06,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:06,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:41:06,894 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:06,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:06,894 INFO L85 PathProgramCache]: Analyzing trace with hash 590030059, now seen corresponding path program 5 times [2023-11-24 21:41:06,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:06,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916517933] [2023-11-24 21:41:06,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:06,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:06,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:06,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916517933] [2023-11-24 21:41:06,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916517933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:06,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:06,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:41:06,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516987288] [2023-11-24 21:41:06,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:06,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:41:06,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:06,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:41:06,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:41:06,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:06,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 635 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 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) [2023-11-24 21:41:06,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:06,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:06,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:07,239 INFO L124 PetriNetUnfolderBase]: 722/1077 cut-off events. [2023-11-24 21:41:07,239 INFO L125 PetriNetUnfolderBase]: For 7304/7306 co-relation queries the response was YES. [2023-11-24 21:41:07,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5814 conditions, 1077 events. 722/1077 cut-off events. For 7304/7306 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4101 event pairs, 204 based on Foata normal form. 23/1094 useless extension candidates. Maximal degree in co-relation 5785. Up to 649 conditions per place. [2023-11-24 21:41:07,256 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 53 selfloop transitions, 30 changer transitions 1/93 dead transitions. [2023-11-24 21:41:07,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 93 transitions, 1052 flow [2023-11-24 21:41:07,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:41:07,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:41:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2023-11-24 21:41:07,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7659574468085106 [2023-11-24 21:41:07,257 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 144 transitions. [2023-11-24 21:41:07,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 144 transitions. [2023-11-24 21:41:07,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:07,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 144 transitions. [2023-11-24 21:41:07,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:07,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:07,259 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:07,260 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 635 flow. Second operand 4 states and 144 transitions. [2023-11-24 21:41:07,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 93 transitions, 1052 flow [2023-11-24 21:41:07,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 962 flow, removed 35 selfloop flow, removed 3 redundant places. [2023-11-24 21:41:07,281 INFO L231 Difference]: Finished difference. Result has 67 places, 74 transitions, 799 flow [2023-11-24 21:41:07,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=799, PETRI_PLACES=67, PETRI_TRANSITIONS=74} [2023-11-24 21:41:07,282 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2023-11-24 21:41:07,282 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 74 transitions, 799 flow [2023-11-24 21:41:07,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 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) [2023-11-24 21:41:07,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:07,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:07,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 21:41:07,283 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:07,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:07,283 INFO L85 PathProgramCache]: Analyzing trace with hash -2095211059, now seen corresponding path program 1 times [2023-11-24 21:41:07,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:07,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130265569] [2023-11-24 21:41:07,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:07,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:07,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:07,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130265569] [2023-11-24 21:41:07,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130265569] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:41:07,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427577591] [2023-11-24 21:41:07,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:07,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:07,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:41:07,440 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:41:07,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:41:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:07,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:41:07,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:41:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:07,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:41:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:07,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427577591] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-24 21:41:07,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:41:07,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2023-11-24 21:41:07,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392318857] [2023-11-24 21:41:07,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:07,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:41:07,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:07,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:41:07,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:41:07,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:07,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 74 transitions, 799 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 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) [2023-11-24 21:41:07,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:07,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:07,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:08,057 INFO L124 PetriNetUnfolderBase]: 826/1236 cut-off events. [2023-11-24 21:41:08,058 INFO L125 PetriNetUnfolderBase]: For 8802/8802 co-relation queries the response was YES. [2023-11-24 21:41:08,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6861 conditions, 1236 events. 826/1236 cut-off events. For 8802/8802 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4862 event pairs, 97 based on Foata normal form. 47/1281 useless extension candidates. Maximal degree in co-relation 6833. Up to 936 conditions per place. [2023-11-24 21:41:08,076 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 78 selfloop transitions, 14 changer transitions 0/101 dead transitions. [2023-11-24 21:41:08,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 1217 flow [2023-11-24 21:41:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:41:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:41:08,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2023-11-24 21:41:08,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7606382978723404 [2023-11-24 21:41:08,079 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 143 transitions. [2023-11-24 21:41:08,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 143 transitions. [2023-11-24 21:41:08,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:08,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 143 transitions. [2023-11-24 21:41:08,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:08,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:08,081 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:08,081 INFO L175 Difference]: Start difference. First operand has 67 places, 74 transitions, 799 flow. Second operand 4 states and 143 transitions. [2023-11-24 21:41:08,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 1217 flow [2023-11-24 21:41:08,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 1148 flow, removed 23 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:08,098 INFO L231 Difference]: Finished difference. Result has 70 places, 78 transitions, 838 flow [2023-11-24 21:41:08,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=838, PETRI_PLACES=70, PETRI_TRANSITIONS=78} [2023-11-24 21:41:08,099 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2023-11-24 21:41:08,099 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 78 transitions, 838 flow [2023-11-24 21:41:08,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 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) [2023-11-24 21:41:08,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:08,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:08,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:41:08,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:08,305 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:08,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:08,306 INFO L85 PathProgramCache]: Analyzing trace with hash 214442799, now seen corresponding path program 2 times [2023-11-24 21:41:08,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:08,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361792706] [2023-11-24 21:41:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:08,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:08,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:08,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361792706] [2023-11-24 21:41:08,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361792706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:08,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:08,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:41:08,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321459151] [2023-11-24 21:41:08,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:08,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:41:08,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:08,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:41:08,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:41:08,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:08,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 78 transitions, 838 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:08,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:08,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:08,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:08,744 INFO L124 PetriNetUnfolderBase]: 880/1331 cut-off events. [2023-11-24 21:41:08,744 INFO L125 PetriNetUnfolderBase]: For 10100/10100 co-relation queries the response was YES. [2023-11-24 21:41:08,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7514 conditions, 1331 events. 880/1331 cut-off events. For 10100/10100 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5433 event pairs, 226 based on Foata normal form. 16/1344 useless extension candidates. Maximal degree in co-relation 7484. Up to 793 conditions per place. [2023-11-24 21:41:08,761 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 68 selfloop transitions, 32 changer transitions 4/113 dead transitions. [2023-11-24 21:41:08,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 113 transitions, 1413 flow [2023-11-24 21:41:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:41:08,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:41:08,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2023-11-24 21:41:08,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7191489361702128 [2023-11-24 21:41:08,763 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 169 transitions. [2023-11-24 21:41:08,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 169 transitions. [2023-11-24 21:41:08,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:08,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 169 transitions. [2023-11-24 21:41:08,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:08,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 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) [2023-11-24 21:41:08,766 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 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) [2023-11-24 21:41:08,766 INFO L175 Difference]: Start difference. First operand has 70 places, 78 transitions, 838 flow. Second operand 5 states and 169 transitions. [2023-11-24 21:41:08,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 113 transitions, 1413 flow [2023-11-24 21:41:08,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 113 transitions, 1384 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:08,786 INFO L231 Difference]: Finished difference. Result has 76 places, 91 transitions, 1119 flow [2023-11-24 21:41:08,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1119, PETRI_PLACES=76, PETRI_TRANSITIONS=91} [2023-11-24 21:41:08,787 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 26 predicate places. [2023-11-24 21:41:08,787 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 91 transitions, 1119 flow [2023-11-24 21:41:08,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:08,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:08,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:08,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 21:41:08,788 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:08,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:08,788 INFO L85 PathProgramCache]: Analyzing trace with hash 244903383, now seen corresponding path program 3 times [2023-11-24 21:41:08,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:08,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363028812] [2023-11-24 21:41:08,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:08,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:08,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:08,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:08,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363028812] [2023-11-24 21:41:08,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363028812] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:41:08,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890549941] [2023-11-24 21:41:08,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 21:41:08,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:08,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:41:08,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:41:08,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 21:41:09,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 21:41:09,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:41:09,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:41:09,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:41:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:09,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:41:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:09,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890549941] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:41:09,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:41:09,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-24 21:41:09,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211186399] [2023-11-24 21:41:09,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:41:09,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:41:09,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:09,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:41:09,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:41:09,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:09,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 91 transitions, 1119 flow. Second operand has 8 states, 8 states have (on average 28.375) internal successors, (227), 8 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) [2023-11-24 21:41:09,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:09,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:09,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:09,562 INFO L124 PetriNetUnfolderBase]: 1097/1674 cut-off events. [2023-11-24 21:41:09,562 INFO L125 PetriNetUnfolderBase]: For 14716/14716 co-relation queries the response was YES. [2023-11-24 21:41:09,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10376 conditions, 1674 events. 1097/1674 cut-off events. For 14716/14716 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7249 event pairs, 258 based on Foata normal form. 47/1717 useless extension candidates. Maximal degree in co-relation 10343. Up to 1099 conditions per place. [2023-11-24 21:41:09,589 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 89 selfloop transitions, 57 changer transitions 0/155 dead transitions. [2023-11-24 21:41:09,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 155 transitions, 2196 flow [2023-11-24 21:41:09,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:41:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:41:09,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 205 transitions. [2023-11-24 21:41:09,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7269503546099291 [2023-11-24 21:41:09,591 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 205 transitions. [2023-11-24 21:41:09,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 205 transitions. [2023-11-24 21:41:09,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:09,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 205 transitions. [2023-11-24 21:41:09,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:09,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 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) [2023-11-24 21:41:09,594 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 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) [2023-11-24 21:41:09,594 INFO L175 Difference]: Start difference. First operand has 76 places, 91 transitions, 1119 flow. Second operand 6 states and 205 transitions. [2023-11-24 21:41:09,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 155 transitions, 2196 flow [2023-11-24 21:41:09,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 155 transitions, 2126 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:09,627 INFO L231 Difference]: Finished difference. Result has 82 places, 128 transitions, 1869 flow [2023-11-24 21:41:09,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1869, PETRI_PLACES=82, PETRI_TRANSITIONS=128} [2023-11-24 21:41:09,628 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 32 predicate places. [2023-11-24 21:41:09,628 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 128 transitions, 1869 flow [2023-11-24 21:41:09,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 28.375) internal successors, (227), 8 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) [2023-11-24 21:41:09,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:09,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:09,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:41:09,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-24 21:41:09,834 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:09,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:09,835 INFO L85 PathProgramCache]: Analyzing trace with hash 821705107, now seen corresponding path program 4 times [2023-11-24 21:41:09,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:09,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109927053] [2023-11-24 21:41:09,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:09,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:09,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:09,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109927053] [2023-11-24 21:41:09,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109927053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:09,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:09,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:41:09,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358438504] [2023-11-24 21:41:09,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:09,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:41:09,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:09,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:41:09,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:41:09,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:09,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 128 transitions, 1869 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:09,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:09,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:09,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:10,341 INFO L124 PetriNetUnfolderBase]: 1084/1628 cut-off events. [2023-11-24 21:41:10,342 INFO L125 PetriNetUnfolderBase]: For 17234/17236 co-relation queries the response was YES. [2023-11-24 21:41:10,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11123 conditions, 1628 events. 1084/1628 cut-off events. For 17234/17236 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6810 event pairs, 288 based on Foata normal form. 23/1647 useless extension candidates. Maximal degree in co-relation 11087. Up to 1064 conditions per place. [2023-11-24 21:41:10,365 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 107 selfloop transitions, 25 changer transitions 9/150 dead transitions. [2023-11-24 21:41:10,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 150 transitions, 2388 flow [2023-11-24 21:41:10,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:41:10,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:41:10,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2023-11-24 21:41:10,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7021276595744681 [2023-11-24 21:41:10,367 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 165 transitions. [2023-11-24 21:41:10,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 165 transitions. [2023-11-24 21:41:10,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:10,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 165 transitions. [2023-11-24 21:41:10,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 33.0) internal successors, (165), 5 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) [2023-11-24 21:41:10,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 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) [2023-11-24 21:41:10,370 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 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) [2023-11-24 21:41:10,370 INFO L175 Difference]: Start difference. First operand has 82 places, 128 transitions, 1869 flow. Second operand 5 states and 165 transitions. [2023-11-24 21:41:10,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 150 transitions, 2388 flow [2023-11-24 21:41:10,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 150 transitions, 2326 flow, removed 31 selfloop flow, removed 0 redundant places. [2023-11-24 21:41:10,419 INFO L231 Difference]: Finished difference. Result has 88 places, 126 transitions, 1867 flow [2023-11-24 21:41:10,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1867, PETRI_PLACES=88, PETRI_TRANSITIONS=126} [2023-11-24 21:41:10,420 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2023-11-24 21:41:10,420 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 126 transitions, 1867 flow [2023-11-24 21:41:10,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:10,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:10,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:10,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-24 21:41:10,421 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:10,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:10,422 INFO L85 PathProgramCache]: Analyzing trace with hash 2024019300, now seen corresponding path program 1 times [2023-11-24 21:41:10,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:10,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606957181] [2023-11-24 21:41:10,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:10,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:10,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:10,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606957181] [2023-11-24 21:41:10,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606957181] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:41:10,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128485342] [2023-11-24 21:41:10,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:10,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:10,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:41:10,772 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:41:10,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 21:41:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:10,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 21:41:10,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:41:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:11,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:41:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:12,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128485342] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:41:12,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:41:12,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-11-24 21:41:12,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493276723] [2023-11-24 21:41:12,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:41:12,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 21:41:12,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:12,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 21:41:12,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:41:12,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:12,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 126 transitions, 1867 flow. Second operand has 11 states, 11 states have (on average 29.545454545454547) internal successors, (325), 11 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:12,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:12,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:12,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:12,627 INFO L124 PetriNetUnfolderBase]: 1524/2303 cut-off events. [2023-11-24 21:41:12,627 INFO L125 PetriNetUnfolderBase]: For 22342/22356 co-relation queries the response was YES. [2023-11-24 21:41:12,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14865 conditions, 2303 events. 1524/2303 cut-off events. For 22342/22356 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10274 event pairs, 183 based on Foata normal form. 8/2309 useless extension candidates. Maximal degree in co-relation 14826. Up to 1616 conditions per place. [2023-11-24 21:41:12,702 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 143 selfloop transitions, 55 changer transitions 2/209 dead transitions. [2023-11-24 21:41:12,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 209 transitions, 2955 flow [2023-11-24 21:41:12,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:41:12,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:41:12,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 323 transitions. [2023-11-24 21:41:12,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7635933806146572 [2023-11-24 21:41:12,705 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 323 transitions. [2023-11-24 21:41:12,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 323 transitions. [2023-11-24 21:41:12,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:12,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 323 transitions. [2023-11-24 21:41:12,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.888888888888886) internal successors, (323), 9 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:12,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:12,711 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:12,711 INFO L175 Difference]: Start difference. First operand has 88 places, 126 transitions, 1867 flow. Second operand 9 states and 323 transitions. [2023-11-24 21:41:12,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 209 transitions, 2955 flow [2023-11-24 21:41:12,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 209 transitions, 2861 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-24 21:41:12,773 INFO L231 Difference]: Finished difference. Result has 94 places, 157 transitions, 2446 flow [2023-11-24 21:41:12,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2446, PETRI_PLACES=94, PETRI_TRANSITIONS=157} [2023-11-24 21:41:12,775 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 44 predicate places. [2023-11-24 21:41:12,775 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 157 transitions, 2446 flow [2023-11-24 21:41:12,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 29.545454545454547) internal successors, (325), 11 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:12,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:12,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:12,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:41:12,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:12,982 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:12,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:12,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2904790, now seen corresponding path program 2 times [2023-11-24 21:41:12,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:12,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249841019] [2023-11-24 21:41:12,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:12,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:13,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:13,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249841019] [2023-11-24 21:41:13,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249841019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:41:13,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896061031] [2023-11-24 21:41:13,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:41:13,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:13,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:41:13,369 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:41:13,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 21:41:13,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:41:13,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:41:13,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 21:41:13,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:41:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:13,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:41:14,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:14,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896061031] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:41:14,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:41:14,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2023-11-24 21:41:14,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875523751] [2023-11-24 21:41:14,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:41:14,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 21:41:14,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:14,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 21:41:14,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-24 21:41:14,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:14,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 157 transitions, 2446 flow. Second operand has 13 states, 13 states have (on average 29.615384615384617) internal successors, (385), 13 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:14,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:14,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:14,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:15,403 INFO L124 PetriNetUnfolderBase]: 1770/2710 cut-off events. [2023-11-24 21:41:15,403 INFO L125 PetriNetUnfolderBase]: For 27547/27563 co-relation queries the response was YES. [2023-11-24 21:41:15,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17669 conditions, 2710 events. 1770/2710 cut-off events. For 27547/27563 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12657 event pairs, 302 based on Foata normal form. 7/2715 useless extension candidates. Maximal degree in co-relation 17627. Up to 2057 conditions per place. [2023-11-24 21:41:15,442 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 153 selfloop transitions, 52 changer transitions 1/215 dead transitions. [2023-11-24 21:41:15,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 215 transitions, 3301 flow [2023-11-24 21:41:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:41:15,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:41:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 284 transitions. [2023-11-24 21:41:15,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7553191489361702 [2023-11-24 21:41:15,445 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 284 transitions. [2023-11-24 21:41:15,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 284 transitions. [2023-11-24 21:41:15,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:15,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 284 transitions. [2023-11-24 21:41:15,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.5) internal successors, (284), 8 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) [2023-11-24 21:41:15,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:15,448 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:15,448 INFO L175 Difference]: Start difference. First operand has 94 places, 157 transitions, 2446 flow. Second operand 8 states and 284 transitions. [2023-11-24 21:41:15,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 215 transitions, 3301 flow [2023-11-24 21:41:15,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 215 transitions, 3061 flow, removed 108 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:15,534 INFO L231 Difference]: Finished difference. Result has 102 places, 173 transitions, 2609 flow [2023-11-24 21:41:15,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2206, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2609, PETRI_PLACES=102, PETRI_TRANSITIONS=173} [2023-11-24 21:41:15,535 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 52 predicate places. [2023-11-24 21:41:15,535 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 173 transitions, 2609 flow [2023-11-24 21:41:15,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 29.615384615384617) internal successors, (385), 13 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:15,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:15,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:15,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:41:15,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:15,742 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:15,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:15,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1042812950, now seen corresponding path program 3 times [2023-11-24 21:41:15,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:15,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681421487] [2023-11-24 21:41:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:15,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:16,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:16,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681421487] [2023-11-24 21:41:16,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681421487] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:41:16,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041306753] [2023-11-24 21:41:16,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 21:41:16,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:16,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:41:16,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:41:16,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 21:41:16,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 21:41:16,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:41:16,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 21:41:16,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:41:16,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:16,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:41:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:17,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041306753] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:41:17,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:41:17,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2023-11-24 21:41:17,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759250471] [2023-11-24 21:41:17,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:41:17,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 21:41:17,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:17,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 21:41:17,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-24 21:41:17,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:17,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 173 transitions, 2609 flow. Second operand has 13 states, 13 states have (on average 29.615384615384617) internal successors, (385), 13 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:17,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:17,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:17,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:18,099 INFO L124 PetriNetUnfolderBase]: 2220/3422 cut-off events. [2023-11-24 21:41:18,099 INFO L125 PetriNetUnfolderBase]: For 34139/34160 co-relation queries the response was YES. [2023-11-24 21:41:18,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21699 conditions, 3422 events. 2220/3422 cut-off events. For 34139/34160 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 16793 event pairs, 430 based on Foata normal form. 3/3418 useless extension candidates. Maximal degree in co-relation 21654. Up to 2638 conditions per place. [2023-11-24 21:41:18,154 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 190 selfloop transitions, 64 changer transitions 2/265 dead transitions. [2023-11-24 21:41:18,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 265 transitions, 4096 flow [2023-11-24 21:41:18,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:41:18,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:41:18,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 320 transitions. [2023-11-24 21:41:18,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7565011820330969 [2023-11-24 21:41:18,157 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 320 transitions. [2023-11-24 21:41:18,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 320 transitions. [2023-11-24 21:41:18,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:18,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 320 transitions. [2023-11-24 21:41:18,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.55555555555556) internal successors, (320), 9 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) [2023-11-24 21:41:18,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:18,161 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:18,161 INFO L175 Difference]: Start difference. First operand has 102 places, 173 transitions, 2609 flow. Second operand 9 states and 320 transitions. [2023-11-24 21:41:18,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 265 transitions, 4096 flow [2023-11-24 21:41:18,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 265 transitions, 3923 flow, removed 76 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:18,283 INFO L231 Difference]: Finished difference. Result has 113 places, 213 transitions, 3381 flow [2023-11-24 21:41:18,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2436, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3381, PETRI_PLACES=113, PETRI_TRANSITIONS=213} [2023-11-24 21:41:18,284 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 63 predicate places. [2023-11-24 21:41:18,284 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 213 transitions, 3381 flow [2023-11-24 21:41:18,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 29.615384615384617) internal successors, (385), 13 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:18,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:18,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:18,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 21:41:18,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-24 21:41:18,497 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:18,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:18,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1581304648, now seen corresponding path program 4 times [2023-11-24 21:41:18,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:18,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972247243] [2023-11-24 21:41:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:18,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:18,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972247243] [2023-11-24 21:41:18,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972247243] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:41:18,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507823667] [2023-11-24 21:41:18,828 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 21:41:18,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:18,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:41:18,829 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:41:18,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 21:41:19,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 21:41:19,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:41:19,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 21:41:19,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:41:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:19,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:41:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:19,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507823667] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:41:19,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:41:19,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2023-11-24 21:41:19,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424835324] [2023-11-24 21:41:19,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:41:19,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:41:19,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:19,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:41:19,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:41:19,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:19,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 213 transitions, 3381 flow. Second operand has 10 states, 10 states have (on average 29.7) internal successors, (297), 10 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) [2023-11-24 21:41:19,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:19,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:19,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:20,688 INFO L124 PetriNetUnfolderBase]: 2500/3856 cut-off events. [2023-11-24 21:41:20,688 INFO L125 PetriNetUnfolderBase]: For 40402/40426 co-relation queries the response was YES. [2023-11-24 21:41:20,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24721 conditions, 3856 events. 2500/3856 cut-off events. For 40402/40426 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19375 event pairs, 543 based on Foata normal form. 3/3849 useless extension candidates. Maximal degree in co-relation 24670. Up to 3096 conditions per place. [2023-11-24 21:41:20,738 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 205 selfloop transitions, 64 changer transitions 2/280 dead transitions. [2023-11-24 21:41:20,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 280 transitions, 4571 flow [2023-11-24 21:41:20,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:41:20,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:41:20,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 316 transitions. [2023-11-24 21:41:20,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7470449172576832 [2023-11-24 21:41:20,741 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 316 transitions. [2023-11-24 21:41:20,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 316 transitions. [2023-11-24 21:41:20,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:20,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 316 transitions. [2023-11-24 21:41:20,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:20,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:20,744 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:20,744 INFO L175 Difference]: Start difference. First operand has 113 places, 213 transitions, 3381 flow. Second operand 9 states and 316 transitions. [2023-11-24 21:41:20,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 280 transitions, 4571 flow [2023-11-24 21:41:20,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 280 transitions, 4231 flow, removed 158 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:20,872 INFO L231 Difference]: Finished difference. Result has 123 places, 232 transitions, 3589 flow [2023-11-24 21:41:20,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3041, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3589, PETRI_PLACES=123, PETRI_TRANSITIONS=232} [2023-11-24 21:41:20,873 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 73 predicate places. [2023-11-24 21:41:20,874 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 232 transitions, 3589 flow [2023-11-24 21:41:20,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.7) internal successors, (297), 10 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) [2023-11-24 21:41:20,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:20,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:20,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 21:41:21,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:21,084 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:21,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:21,084 INFO L85 PathProgramCache]: Analyzing trace with hash 960437266, now seen corresponding path program 5 times [2023-11-24 21:41:21,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:21,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084422647] [2023-11-24 21:41:21,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:21,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:21,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:21,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084422647] [2023-11-24 21:41:21,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084422647] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:41:21,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184095819] [2023-11-24 21:41:21,369 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-24 21:41:21,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:21,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:41:21,372 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:41:21,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 21:41:21,573 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:41:21,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:41:21,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 21:41:21,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:41:21,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:21,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:41:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:23,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184095819] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:41:23,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:41:23,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2023-11-24 21:41:23,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765317578] [2023-11-24 21:41:23,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:41:23,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 21:41:23,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:23,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 21:41:23,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-24 21:41:23,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:23,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 232 transitions, 3589 flow. Second operand has 13 states, 13 states have (on average 29.615384615384617) internal successors, (385), 13 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:23,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:23,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:23,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:24,765 INFO L124 PetriNetUnfolderBase]: 2906/4478 cut-off events. [2023-11-24 21:41:24,766 INFO L125 PetriNetUnfolderBase]: For 46242/46277 co-relation queries the response was YES. [2023-11-24 21:41:24,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28326 conditions, 4478 events. 2906/4478 cut-off events. For 46242/46277 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23231 event pairs, 674 based on Foata normal form. 6/4474 useless extension candidates. Maximal degree in co-relation 28271. Up to 3687 conditions per place. [2023-11-24 21:41:24,835 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 243 selfloop transitions, 63 changer transitions 2/317 dead transitions. [2023-11-24 21:41:24,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 317 transitions, 5196 flow [2023-11-24 21:41:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:41:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:41:24,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 315 transitions. [2023-11-24 21:41:24,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7446808510638298 [2023-11-24 21:41:24,839 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 315 transitions. [2023-11-24 21:41:24,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 315 transitions. [2023-11-24 21:41:24,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:24,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 315 transitions. [2023-11-24 21:41:24,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:24,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:24,842 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:24,842 INFO L175 Difference]: Start difference. First operand has 123 places, 232 transitions, 3589 flow. Second operand 9 states and 315 transitions. [2023-11-24 21:41:24,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 317 transitions, 5196 flow [2023-11-24 21:41:25,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 317 transitions, 4909 flow, removed 117 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:25,136 INFO L231 Difference]: Finished difference. Result has 133 places, 271 transitions, 4266 flow [2023-11-24 21:41:25,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3302, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4266, PETRI_PLACES=133, PETRI_TRANSITIONS=271} [2023-11-24 21:41:25,137 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 83 predicate places. [2023-11-24 21:41:25,137 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 271 transitions, 4266 flow [2023-11-24 21:41:25,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 29.615384615384617) internal successors, (385), 13 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:25,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:25,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:25,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-24 21:41:25,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:25,349 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:25,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:25,349 INFO L85 PathProgramCache]: Analyzing trace with hash 97779404, now seen corresponding path program 6 times [2023-11-24 21:41:25,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:25,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782163311] [2023-11-24 21:41:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:25,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:25,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:25,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782163311] [2023-11-24 21:41:25,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782163311] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:41:25,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111020551] [2023-11-24 21:41:25,712 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-24 21:41:25,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:25,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:41:25,716 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:41:25,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 21:41:25,892 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-24 21:41:25,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:41:25,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 21:41:25,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:41:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:26,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:41:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:27,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111020551] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:41:27,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:41:27,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2023-11-24 21:41:27,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489899377] [2023-11-24 21:41:27,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:41:27,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 21:41:27,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:27,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 21:41:27,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:41:27,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:27,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 271 transitions, 4266 flow. Second operand has 12 states, 12 states have (on average 29.916666666666668) internal successors, (359), 12 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) [2023-11-24 21:41:27,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:27,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:27,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:29,025 INFO L124 PetriNetUnfolderBase]: 3186/4920 cut-off events. [2023-11-24 21:41:29,025 INFO L125 PetriNetUnfolderBase]: For 51618/51656 co-relation queries the response was YES. [2023-11-24 21:41:29,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31306 conditions, 4920 events. 3186/4920 cut-off events. For 51618/51656 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 26046 event pairs, 799 based on Foata normal form. 2/4912 useless extension candidates. Maximal degree in co-relation 31246. Up to 4113 conditions per place. [2023-11-24 21:41:29,185 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 261 selfloop transitions, 63 changer transitions 2/335 dead transitions. [2023-11-24 21:41:29,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 335 transitions, 5632 flow [2023-11-24 21:41:29,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:41:29,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:41:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 314 transitions. [2023-11-24 21:41:29,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7423167848699763 [2023-11-24 21:41:29,188 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 314 transitions. [2023-11-24 21:41:29,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 314 transitions. [2023-11-24 21:41:29,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:29,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 314 transitions. [2023-11-24 21:41:29,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 34.888888888888886) internal successors, (314), 9 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:29,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:29,195 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:29,195 INFO L175 Difference]: Start difference. First operand has 133 places, 271 transitions, 4266 flow. Second operand 9 states and 314 transitions. [2023-11-24 21:41:29,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 335 transitions, 5632 flow [2023-11-24 21:41:29,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 335 transitions, 5242 flow, removed 183 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:29,414 INFO L231 Difference]: Finished difference. Result has 143 places, 290 transitions, 4494 flow [2023-11-24 21:41:29,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3876, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4494, PETRI_PLACES=143, PETRI_TRANSITIONS=290} [2023-11-24 21:41:29,415 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 93 predicate places. [2023-11-24 21:41:29,415 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 290 transitions, 4494 flow [2023-11-24 21:41:29,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 29.916666666666668) internal successors, (359), 12 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) [2023-11-24 21:41:29,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:29,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:29,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 21:41:29,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-24 21:41:29,622 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:29,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:29,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2077280205, now seen corresponding path program 7 times [2023-11-24 21:41:29,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:29,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537499992] [2023-11-24 21:41:29,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:29,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:29,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:29,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537499992] [2023-11-24 21:41:29,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537499992] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:41:29,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991515861] [2023-11-24 21:41:29,848 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-24 21:41:29,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:29,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:41:29,852 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:41:29,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 21:41:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:30,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:41:30,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:41:30,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:30,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:41:30,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:30,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991515861] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:41:30,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:41:30,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-11-24 21:41:30,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132062217] [2023-11-24 21:41:30,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:41:30,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 21:41:30,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:30,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 21:41:30,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:41:30,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:30,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 290 transitions, 4494 flow. Second operand has 12 states, 12 states have (on average 28.416666666666668) internal successors, (341), 12 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) [2023-11-24 21:41:30,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:30,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:30,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:32,526 INFO L124 PetriNetUnfolderBase]: 4816/7323 cut-off events. [2023-11-24 21:41:32,526 INFO L125 PetriNetUnfolderBase]: For 78495/78503 co-relation queries the response was YES. [2023-11-24 21:41:32,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45094 conditions, 7323 events. 4816/7323 cut-off events. For 78495/78503 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 39821 event pairs, 513 based on Foata normal form. 48/7355 useless extension candidates. Maximal degree in co-relation 45030. Up to 2368 conditions per place. [2023-11-24 21:41:32,609 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 500 selfloop transitions, 139 changer transitions 0/648 dead transitions. [2023-11-24 21:41:32,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 648 transitions, 10692 flow [2023-11-24 21:41:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 21:41:32,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-24 21:41:32,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 464 transitions. [2023-11-24 21:41:32,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7594108019639935 [2023-11-24 21:41:32,611 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 464 transitions. [2023-11-24 21:41:32,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 464 transitions. [2023-11-24 21:41:32,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:32,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 464 transitions. [2023-11-24 21:41:32,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 35.69230769230769) internal successors, (464), 13 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:32,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 47.0) internal successors, (658), 14 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:32,615 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 47.0) internal successors, (658), 14 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:32,615 INFO L175 Difference]: Start difference. First operand has 143 places, 290 transitions, 4494 flow. Second operand 13 states and 464 transitions. [2023-11-24 21:41:32,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 648 transitions, 10692 flow [2023-11-24 21:41:32,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 648 transitions, 9794 flow, removed 423 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:32,935 INFO L231 Difference]: Finished difference. Result has 161 places, 354 transitions, 5536 flow [2023-11-24 21:41:32,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4138, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5536, PETRI_PLACES=161, PETRI_TRANSITIONS=354} [2023-11-24 21:41:32,936 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 111 predicate places. [2023-11-24 21:41:32,936 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 354 transitions, 5536 flow [2023-11-24 21:41:32,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.416666666666668) internal successors, (341), 12 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) [2023-11-24 21:41:32,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:32,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:32,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 21:41:33,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-24 21:41:33,143 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:33,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:33,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1212977260, now seen corresponding path program 8 times [2023-11-24 21:41:33,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:33,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842762211] [2023-11-24 21:41:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:33,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:33,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:33,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:33,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842762211] [2023-11-24 21:41:33,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842762211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:41:33,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737017615] [2023-11-24 21:41:33,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:41:33,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:33,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:41:33,418 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:41:33,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 21:41:33,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:41:33,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:41:33,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:41:33,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:41:33,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:33,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:41:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:33,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737017615] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:41:33,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:41:33,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-24 21:41:33,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738866743] [2023-11-24 21:41:33,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:41:33,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-24 21:41:33,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:33,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-24 21:41:33,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:41:33,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:33,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 354 transitions, 5536 flow. Second operand has 16 states, 16 states have (on average 27.0625) internal successors, (433), 16 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:33,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:33,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:33,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:36,527 INFO L124 PetriNetUnfolderBase]: 5579/8186 cut-off events. [2023-11-24 21:41:36,527 INFO L125 PetriNetUnfolderBase]: For 106846/106906 co-relation queries the response was YES. [2023-11-24 21:41:36,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56394 conditions, 8186 events. 5579/8186 cut-off events. For 106846/106906 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 42788 event pairs, 1307 based on Foata normal form. 70/8212 useless extension candidates. Maximal degree in co-relation 56322. Up to 5459 conditions per place. [2023-11-24 21:41:36,655 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 402 selfloop transitions, 260 changer transitions 0/671 dead transitions. [2023-11-24 21:41:36,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 671 transitions, 11155 flow [2023-11-24 21:41:36,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-24 21:41:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-24 21:41:36,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 588 transitions. [2023-11-24 21:41:36,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7359198998748435 [2023-11-24 21:41:36,657 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 588 transitions. [2023-11-24 21:41:36,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 588 transitions. [2023-11-24 21:41:36,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:36,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 588 transitions. [2023-11-24 21:41:36,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 34.588235294117645) internal successors, (588), 17 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:36,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 47.0) internal successors, (846), 18 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:36,663 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 47.0) internal successors, (846), 18 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:36,663 INFO L175 Difference]: Start difference. First operand has 161 places, 354 transitions, 5536 flow. Second operand 17 states and 588 transitions. [2023-11-24 21:41:36,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 671 transitions, 11155 flow [2023-11-24 21:41:37,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 671 transitions, 10617 flow, removed 239 selfloop flow, removed 1 redundant places. [2023-11-24 21:41:37,217 INFO L231 Difference]: Finished difference. Result has 181 places, 488 transitions, 7942 flow [2023-11-24 21:41:37,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5196, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7942, PETRI_PLACES=181, PETRI_TRANSITIONS=488} [2023-11-24 21:41:37,218 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 131 predicate places. [2023-11-24 21:41:37,218 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 488 transitions, 7942 flow [2023-11-24 21:41:37,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 27.0625) internal successors, (433), 16 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:37,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:37,218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:37,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-24 21:41:37,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-24 21:41:37,419 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:37,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:37,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1513972735, now seen corresponding path program 9 times [2023-11-24 21:41:37,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:37,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850998490] [2023-11-24 21:41:37,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:37,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:37,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:37,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:37,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850998490] [2023-11-24 21:41:37,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850998490] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:41:37,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875542393] [2023-11-24 21:41:37,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 21:41:37,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:37,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:41:37,720 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:41:37,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 21:41:37,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 21:41:37,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:41:37,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:41:37,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:41:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:37,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:41:38,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:38,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875542393] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:41:38,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:41:38,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2023-11-24 21:41:38,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936612712] [2023-11-24 21:41:38,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:41:38,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-24 21:41:38,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:38,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-24 21:41:38,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-24 21:41:38,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2023-11-24 21:41:38,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 488 transitions, 7942 flow. Second operand has 15 states, 15 states have (on average 27.666666666666668) internal successors, (415), 15 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:38,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:38,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2023-11-24 21:41:38,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:42,861 INFO L124 PetriNetUnfolderBase]: 6962/10417 cut-off events. [2023-11-24 21:41:42,861 INFO L125 PetriNetUnfolderBase]: For 153976/154032 co-relation queries the response was YES. [2023-11-24 21:41:42,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73745 conditions, 10417 events. 6962/10417 cut-off events. For 153976/154032 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 59455 event pairs, 940 based on Foata normal form. 309/10700 useless extension candidates. Maximal degree in co-relation 73667. Up to 3556 conditions per place. [2023-11-24 21:41:42,985 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 477 selfloop transitions, 521 changer transitions 65/1072 dead transitions. [2023-11-24 21:41:42,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 1072 transitions, 18087 flow [2023-11-24 21:41:42,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-24 21:41:42,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-24 21:41:42,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1427 transitions. [2023-11-24 21:41:42,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6900386847195358 [2023-11-24 21:41:42,989 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 1427 transitions. [2023-11-24 21:41:42,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 1427 transitions. [2023-11-24 21:41:42,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:42,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 1427 transitions. [2023-11-24 21:41:42,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 32.43181818181818) internal successors, (1427), 44 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:42,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 47.0) internal successors, (2115), 45 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:42,998 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 47.0) internal successors, (2115), 45 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:42,999 INFO L175 Difference]: Start difference. First operand has 181 places, 488 transitions, 7942 flow. Second operand 44 states and 1427 transitions. [2023-11-24 21:41:42,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 1072 transitions, 18087 flow [2023-11-24 21:41:44,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 1072 transitions, 16860 flow, removed 350 selfloop flow, removed 5 redundant places. [2023-11-24 21:41:44,530 INFO L231 Difference]: Finished difference. Result has 248 places, 790 transitions, 13560 flow [2023-11-24 21:41:44,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7142, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=13560, PETRI_PLACES=248, PETRI_TRANSITIONS=790} [2023-11-24 21:41:44,531 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 198 predicate places. [2023-11-24 21:41:44,531 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 790 transitions, 13560 flow [2023-11-24 21:41:44,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 27.666666666666668) internal successors, (415), 15 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:44,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:44,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:44,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-24 21:41:44,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-24 21:41:44,737 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-24 21:41:44,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:44,738 INFO L85 PathProgramCache]: Analyzing trace with hash -291633888, now seen corresponding path program 10 times [2023-11-24 21:41:44,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:44,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922012724] [2023-11-24 21:41:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:44,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:44,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:41:44,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:44,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922012724] [2023-11-24 21:41:44,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922012724] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:41:44,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172639975] [2023-11-24 21:41:44,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 21:41:44,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:41:44,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4031ead-404f-4b23-a5d0-0f1c18203178/bin/uautomizer-verify-NlZe1sFDwI/z3