./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 9bd2c7ff
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54545fba-2611-4697-8402-e755dd9d15c0/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54545fba-2611-4697-8402-e755dd9d15c0/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54545fba-2611-4697-8402-e755dd9d15c0/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54545fba-2611-4697-8402-e755dd9d15c0/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/queue.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54545fba-2611-4697-8402-e755dd9d15c0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54545fba-2611-4697-8402-e755dd9d15c0/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:59:04,456 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:59:04,523 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54545fba-2611-4697-8402-e755dd9d15c0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2023-11-19 07:59:04,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:59:04,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:59:04,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:59:04,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:59:04,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:59:04,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:59:04,557 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:59:04,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:59:04,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:59:04,559 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:59:04,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:59:04,561 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 07:59:04,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:59:04,562 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 07:59:04,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:59:04,563 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2023-11-19 07:59:04,563 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2023-11-19 07:59:04,564 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2023-11-19 07:59:04,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:59:04,565 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-11-19 07:59:04,565 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2023-11-19 07:59:04,566 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 07:59:04,566 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:59:04,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:59:04,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:59:04,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:59:04,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:59:04,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:59:04,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:59:04,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:59:04,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:59:04,571 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:59:04,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:59:04,572 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:59:04,573 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:59:04,573 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_54545fba-2611-4697-8402-e755dd9d15c0/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54545fba-2611-4697-8402-e755dd9d15c0/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60
[2023-11-19 07:59:04,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:59:04,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:59:04,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:59:04,905 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:59:04,907 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:59:04,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54545fba-2611-4697-8402-e755dd9d15c0/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/queue.i
[2023-11-19 07:59:08,043 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:59:08,340 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:59:08,341 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54545fba-2611-4697-8402-e755dd9d15c0/sv-benchmarks/c/pthread/queue.i
[2023-11-19 07:59:08,367 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54545fba-2611-4697-8402-e755dd9d15c0/bin/uautomizer-verify-uCwYo4JHxu/data/e55dc5bf6/e4a71128e38d4ac7a1a98349612ef09c/FLAGf5c138ae0
[2023-11-19 07:59:08,384 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54545fba-2611-4697-8402-e755dd9d15c0/bin/uautomizer-verify-uCwYo4JHxu/data/e55dc5bf6/e4a71128e38d4ac7a1a98349612ef09c
[2023-11-19 07:59:08,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:59:08,389 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:59:08,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:59:08,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:59:08,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:59:08,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:08" (1/1) ...
[2023-11-19 07:59:08,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a667ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:08, skipping insertion in model container
[2023-11-19 07:59:08,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:08" (1/1) ...
[2023-11-19 07:59:08,473 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:59:09,038 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:59:09,053 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 07:59:09,116 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:59:09,226 INFO L206 MainTranslator]: Completed translation
[2023-11-19 07:59:09,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:09 WrapperNode
[2023-11-19 07:59:09,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:59:09,229 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:59:09,229 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:59:09,229 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:59:09,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:09" (1/1) ...
[2023-11-19 07:59:09,264 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:09" (1/1) ...
[2023-11-19 07:59:09,311 INFO L138 Inliner]: procedures = 274, calls = 71, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 260
[2023-11-19 07:59:09,312 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:59:09,313 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:59:09,313 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:59:09,313 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:59:09,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:09" (1/1) ...
[2023-11-19 07:59:09,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:09" (1/1) ...
[2023-11-19 07:59:09,330 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:09" (1/1) ...
[2023-11-19 07:59:09,330 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:09" (1/1) ...
[2023-11-19 07:59:09,349 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:09" (1/1) ...
[2023-11-19 07:59:09,353 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:09" (1/1) ...
[2023-11-19 07:59:09,357 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:09" (1/1) ...
[2023-11-19 07:59:09,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:09" (1/1) ...
[2023-11-19 07:59:09,374 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:59:09,375 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:59:09,376 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:59:09,376 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:59:09,377 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:09" (1/1) ...
[2023-11-19 07:59:09,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:59:09,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54545fba-2611-4697-8402-e755dd9d15c0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:59:09,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54545fba-2611-4697-8402-e755dd9d15c0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:59:09,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54545fba-2611-4697-8402-e755dd9d15c0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:59:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure t1
[2023-11-19 07:59:09,483 INFO L138 BoogieDeclarations]: Found implementation of procedure t1
[2023-11-19 07:59:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure t2
[2023-11-19 07:59:09,484 INFO L138 BoogieDeclarations]: Found implementation of procedure t2
[2023-11-19 07:59:09,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:59:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:59:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-11-19 07:59:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-11-19 07:59:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2023-11-19 07:59:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:59:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:59:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:59:09,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:59:09,488 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-11-19 07:59:09,750 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 07:59:09,752 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:59:10,559 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 07:59:10,574 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:59:10,574 INFO L302 CfgBuilder]: Removed 2 assume(true) statements.
[2023-11-19 07:59:10,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:10 BoogieIcfgContainer
[2023-11-19 07:59:10,582 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:59:10,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:59:10,585 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:59:10,589 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:59:10,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:08" (1/3) ...
[2023-11-19 07:59:10,591 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248d409b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:10, skipping insertion in model container
[2023-11-19 07:59:10,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:09" (2/3) ...
[2023-11-19 07:59:10,594 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248d409b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:10, skipping insertion in model container
[2023-11-19 07:59:10,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:10" (3/3) ...
[2023-11-19 07:59:10,596 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i
[2023-11-19 07:59:10,620 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:59:10,620 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations.
[2023-11-19 07:59:10,620 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-11-19 07:59:10,885 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2023-11-19 07:59:10,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 373 transitions, 760 flow
[2023-11-19 07:59:11,142 INFO L124 PetriNetUnfolderBase]: 18/371 cut-off events.
[2023-11-19 07:59:11,142 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-11-19 07:59:11,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 371 events. 18/371 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 825 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 267. Up to 2 conditions per place.
[2023-11-19 07:59:11,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 362 places, 373 transitions, 760 flow
[2023-11-19 07:59:11,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 355 places, 366 transitions, 744 flow
[2023-11-19 07:59:11,188 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:59:11,204 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 355 places, 366 transitions, 744 flow
[2023-11-19 07:59:11,207 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 355 places, 366 transitions, 744 flow
[2023-11-19 07:59:11,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 366 transitions, 744 flow
[2023-11-19 07:59:11,328 INFO L124 PetriNetUnfolderBase]: 18/366 cut-off events.
[2023-11-19 07:59:11,328 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-11-19 07:59:11,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 366 events. 18/366 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 803 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 267. Up to 2 conditions per place.
[2023-11-19 07:59:11,355 INFO L119 LiptonReduction]: Number of co-enabled transitions 33180
[2023-11-19 07:59:30,355 INFO L134 LiptonReduction]: Checked pairs total: 113829
[2023-11-19 07:59:30,356 INFO L136 LiptonReduction]: Total number of compositions: 493
[2023-11-19 07:59:30,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:59:30,380 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;@6c8580e9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:59:30,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 142 error locations.
[2023-11-19 07:59:30,382 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 07:59:30,382 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events.
[2023-11-19 07:59:30,383 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:59:30,383 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:59:30,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1]
[2023-11-19 07:59:30,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] ===
[2023-11-19 07:59:30,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:59:30,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1588, now seen corresponding path program 1 times
[2023-11-19 07:59:30,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:59:30,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605795222]
[2023-11-19 07:59:30,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:59:30,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:59:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:59:30,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:59:30,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:59:30,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605795222]
[2023-11-19 07:59:30,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605795222] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:59:30,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:59:30,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0
[2023-11-19 07:59:30,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434444968]
[2023-11-19 07:59:30,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:59:30,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-19 07:59:30,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:59:30,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-19 07:59:30,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 07:59:30,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 357 out of 866
[2023-11-19 07:59:30,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 144 transitions, 300 flow. Second operand has 2 states, 2 states have (on average 357.5) internal successors, (715), 2 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:30,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:59:30,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 357 of 866
[2023-11-19 07:59:30,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:59:32,533 INFO L124 PetriNetUnfolderBase]: 7872/12479 cut-off events.
[2023-11-19 07:59:32,533 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES.
[2023-11-19 07:59:32,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24470 conditions, 12479 events. 7872/12479 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 73134 event pairs, 6916 based on Foata normal form. 0/6380 useless extension candidates. Maximal degree in co-relation 24056. Up to 11876 conditions per place.
[2023-11-19 07:59:32,647 INFO L140 encePairwiseOnDemand]: 817/866 looper letters, 85 selfloop transitions, 0 changer transitions 0/93 dead transitions.
[2023-11-19 07:59:32,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 93 transitions, 368 flow
[2023-11-19 07:59:32,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-11-19 07:59:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2023-11-19 07:59:32,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 848 transitions.
[2023-11-19 07:59:32,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4896073903002309
[2023-11-19 07:59:32,677 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 848 transitions.
[2023-11-19 07:59:32,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 848 transitions.
[2023-11-19 07:59:32,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:59:32,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 848 transitions.
[2023-11-19 07:59:32,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 424.0) internal successors, (848), 2 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:32,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 866.0) internal successors, (2598), 3 states have internal predecessors, (2598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:32,704 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 866.0) internal successors, (2598), 3 states have internal predecessors, (2598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:32,707 INFO L175 Difference]: Start difference. First operand has 140 places, 144 transitions, 300 flow. Second operand 2 states and 848 transitions.
[2023-11-19 07:59:32,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 93 transitions, 368 flow
[2023-11-19 07:59:32,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 93 transitions, 360 flow, removed 0 selfloop flow, removed 4 redundant places.
[2023-11-19 07:59:32,718 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 190 flow
[2023-11-19 07:59:32,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=866, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=190, PETRI_PLACES=89, PETRI_TRANSITIONS=93}
[2023-11-19 07:59:32,726 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, -51 predicate places.
[2023-11-19 07:59:32,726 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 190 flow
[2023-11-19 07:59:32,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 357.5) internal successors, (715), 2 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:32,727 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:59:32,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-11-19 07:59:32,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 07:59:32,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] ===
[2023-11-19 07:59:32,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:59:32,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1567565, now seen corresponding path program 1 times
[2023-11-19 07:59:32,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:59:32,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907690313]
[2023-11-19 07:59:32,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:59:32,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:59:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:59:33,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:59:33,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:59:33,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907690313]
[2023-11-19 07:59:33,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907690313] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:59:33,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:59:33,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:59:33,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177587587]
[2023-11-19 07:59:33,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:59:33,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:59:33,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:59:33,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:59:33,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:59:33,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 866
[2023-11-19 07:59:33,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:33,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:59:33,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 866
[2023-11-19 07:59:33,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:59:34,810 INFO L124 PetriNetUnfolderBase]: 7053/11188 cut-off events.
[2023-11-19 07:59:34,810 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES.
[2023-11-19 07:59:34,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21852 conditions, 11188 events. 7053/11188 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 64466 event pairs, 6153 based on Foata normal form. 0/5975 useless extension candidates. Maximal degree in co-relation 21849. Up to 10620 conditions per place.
[2023-11-19 07:59:34,890 INFO L140 encePairwiseOnDemand]: 861/866 looper letters, 80 selfloop transitions, 1 changer transitions 0/89 dead transitions.
[2023-11-19 07:59:34,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 89 transitions, 344 flow
[2023-11-19 07:59:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:59:34,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:59:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1147 transitions.
[2023-11-19 07:59:34,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4414934565050038
[2023-11-19 07:59:34,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1147 transitions.
[2023-11-19 07:59:34,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1147 transitions.
[2023-11-19 07:59:34,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:59:34,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1147 transitions.
[2023-11-19 07:59:34,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 382.3333333333333) internal successors, (1147), 3 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:34,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 866.0) internal successors, (3464), 4 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:34,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 866.0) internal successors, (3464), 4 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:34,915 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 190 flow. Second operand 3 states and 1147 transitions.
[2023-11-19 07:59:34,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 89 transitions, 344 flow
[2023-11-19 07:59:34,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 344 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-11-19 07:59:34,921 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 184 flow
[2023-11-19 07:59:34,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=866, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=87, PETRI_TRANSITIONS=89}
[2023-11-19 07:59:34,925 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, -53 predicate places.
[2023-11-19 07:59:34,926 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 184 flow
[2023-11-19 07:59:34,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:34,928 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:59:34,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-11-19 07:59:34,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 07:59:34,930 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] ===
[2023-11-19 07:59:34,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:59:34,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1567563, now seen corresponding path program 1 times
[2023-11-19 07:59:34,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:59:34,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769622951]
[2023-11-19 07:59:34,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:59:34,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:59:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:59:35,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:59:35,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:59:35,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769622951]
[2023-11-19 07:59:35,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769622951] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:59:35,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:59:35,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:59:35,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989820659]
[2023-11-19 07:59:35,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:59:35,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:59:35,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:59:35,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:59:35,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:59:35,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 866
[2023-11-19 07:59:35,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:35,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:59:35,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 866
[2023-11-19 07:59:35,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:59:36,671 INFO L124 PetriNetUnfolderBase]: 6276/9963 cut-off events.
[2023-11-19 07:59:36,672 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES.
[2023-11-19 07:59:36,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19437 conditions, 9963 events. 6276/9963 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 56354 event pairs, 5432 based on Foata normal form. 0/5576 useless extension candidates. Maximal degree in co-relation 19433. Up to 9430 conditions per place.
[2023-11-19 07:59:36,876 INFO L140 encePairwiseOnDemand]: 860/866 looper letters, 75 selfloop transitions, 2 changer transitions 0/85 dead transitions.
[2023-11-19 07:59:36,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 85 transitions, 330 flow
[2023-11-19 07:59:36,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:59:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:59:36,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1143 transitions.
[2023-11-19 07:59:36,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4399538106235566
[2023-11-19 07:59:36,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1143 transitions.
[2023-11-19 07:59:36,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1143 transitions.
[2023-11-19 07:59:36,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:59:36,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1143 transitions.
[2023-11-19 07:59:36,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 381.0) internal successors, (1143), 3 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:36,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 866.0) internal successors, (3464), 4 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:36,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 866.0) internal successors, (3464), 4 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:36,902 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 184 flow. Second operand 3 states and 1143 transitions.
[2023-11-19 07:59:36,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 85 transitions, 330 flow
[2023-11-19 07:59:36,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 329 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:59:36,908 INFO L231 Difference]: Finished difference. Result has 84 places, 85 transitions, 179 flow
[2023-11-19 07:59:36,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=866, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=84, PETRI_TRANSITIONS=85}
[2023-11-19 07:59:36,911 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, -56 predicate places.
[2023-11-19 07:59:36,911 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 85 transitions, 179 flow
[2023-11-19 07:59:36,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:36,913 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:59:36,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-11-19 07:59:36,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-19 07:59:36,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] ===
[2023-11-19 07:59:36,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:59:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1567476, now seen corresponding path program 1 times
[2023-11-19 07:59:36,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:59:36,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395826864]
[2023-11-19 07:59:36,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:59:36,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:59:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:59:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:59:37,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:59:37,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395826864]
[2023-11-19 07:59:37,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395826864] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:59:37,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:59:37,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:59:37,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824500943]
[2023-11-19 07:59:37,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:59:37,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:59:37,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:59:37,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:59:37,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:59:37,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 866
[2023-11-19 07:59:37,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 85 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:37,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:59:37,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 866
[2023-11-19 07:59:37,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:59:38,426 INFO L124 PetriNetUnfolderBase]: 6213/9838 cut-off events.
[2023-11-19 07:59:38,426 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES.
[2023-11-19 07:59:38,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19194 conditions, 9838 events. 6213/9838 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 55404 event pairs, 5376 based on Foata normal form. 0/5533 useless extension candidates. Maximal degree in co-relation 19190. Up to 9310 conditions per place.
[2023-11-19 07:59:38,500 INFO L140 encePairwiseOnDemand]: 862/866 looper letters, 73 selfloop transitions, 2 changer transitions 0/83 dead transitions.
[2023-11-19 07:59:38,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 325 flow
[2023-11-19 07:59:38,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:59:38,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:59:38,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1118 transitions.
[2023-11-19 07:59:38,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43033102386451116
[2023-11-19 07:59:38,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1118 transitions.
[2023-11-19 07:59:38,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1118 transitions.
[2023-11-19 07:59:38,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:59:38,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1118 transitions.
[2023-11-19 07:59:38,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:38,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 866.0) internal successors, (3464), 4 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:38,525 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 866.0) internal successors, (3464), 4 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:38,525 INFO L175 Difference]: Start difference. First operand has 84 places, 85 transitions, 179 flow. Second operand 3 states and 1118 transitions.
[2023-11-19 07:59:38,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 325 flow
[2023-11-19 07:59:38,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 321 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:59:38,531 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 175 flow
[2023-11-19 07:59:38,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=866, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=82, PETRI_TRANSITIONS=83}
[2023-11-19 07:59:38,534 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, -58 predicate places.
[2023-11-19 07:59:38,534 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 175 flow
[2023-11-19 07:59:38,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:38,535 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:59:38,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-11-19 07:59:38,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-19 07:59:38,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] ===
[2023-11-19 07:59:38,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:59:38,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1567477, now seen corresponding path program 1 times
[2023-11-19 07:59:38,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:59:38,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698377642]
[2023-11-19 07:59:38,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:59:38,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:59:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:59:38,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:59:38,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:59:38,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698377642]
[2023-11-19 07:59:38,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698377642] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:59:38,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:59:38,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:59:38,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399411747]
[2023-11-19 07:59:38,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:59:38,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:59:38,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:59:38,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:59:38,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:59:38,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 866
[2023-11-19 07:59:38,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:38,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:59:38,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 866
[2023-11-19 07:59:38,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:59:40,249 INFO L124 PetriNetUnfolderBase]: 6150/9713 cut-off events.
[2023-11-19 07:59:40,249 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES.
[2023-11-19 07:59:40,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18949 conditions, 9713 events. 6150/9713 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 54373 event pairs, 5320 based on Foata normal form. 0/5490 useless extension candidates. Maximal degree in co-relation 18945. Up to 9190 conditions per place.
[2023-11-19 07:59:40,310 INFO L140 encePairwiseOnDemand]: 862/866 looper letters, 71 selfloop transitions, 2 changer transitions 0/81 dead transitions.
[2023-11-19 07:59:40,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 317 flow
[2023-11-19 07:59:40,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:59:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:59:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1128 transitions.
[2023-11-19 07:59:40,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4341801385681293
[2023-11-19 07:59:40,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1128 transitions.
[2023-11-19 07:59:40,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1128 transitions.
[2023-11-19 07:59:40,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:59:40,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1128 transitions.
[2023-11-19 07:59:40,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:40,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 866.0) internal successors, (3464), 4 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:40,331 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 866.0) internal successors, (3464), 4 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:40,332 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 175 flow. Second operand 3 states and 1128 transitions.
[2023-11-19 07:59:40,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 317 flow
[2023-11-19 07:59:40,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 81 transitions, 313 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:59:40,338 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 171 flow
[2023-11-19 07:59:40,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=866, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=80, PETRI_TRANSITIONS=81}
[2023-11-19 07:59:40,342 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, -60 predicate places.
[2023-11-19 07:59:40,343 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 171 flow
[2023-11-19 07:59:40,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:40,344 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:59:40,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1]
[2023-11-19 07:59:40,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-19 07:59:40,345 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] ===
[2023-11-19 07:59:40,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:59:40,345 INFO L85 PathProgramCache]: Analyzing trace with hash 48594419, now seen corresponding path program 1 times
[2023-11-19 07:59:40,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:59:40,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205135842]
[2023-11-19 07:59:40,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:59:40,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:59:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:59:40,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:59:40,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:59:40,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205135842]
[2023-11-19 07:59:40,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205135842] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:59:40,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:59:40,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:59:40,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800486360]
[2023-11-19 07:59:40,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:59:40,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:59:40,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:59:40,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:59:40,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:59:41,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 866
[2023-11-19 07:59:41,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:41,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:59:41,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 866
[2023-11-19 07:59:41,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:59:42,292 INFO L124 PetriNetUnfolderBase]: 6459/10113 cut-off events.
[2023-11-19 07:59:42,293 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES.
[2023-11-19 07:59:42,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19827 conditions, 10113 events. 6459/10113 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 55768 event pairs, 5404 based on Foata normal form. 0/5564 useless extension candidates. Maximal degree in co-relation 19823. Up to 9664 conditions per place.
[2023-11-19 07:59:42,353 INFO L140 encePairwiseOnDemand]: 860/866 looper letters, 75 selfloop transitions, 6 changer transitions 0/87 dead transitions.
[2023-11-19 07:59:42,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 87 transitions, 345 flow
[2023-11-19 07:59:42,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 07:59:42,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 07:59:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1422 transitions.
[2023-11-19 07:59:42,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105080831408776
[2023-11-19 07:59:42,361 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1422 transitions.
[2023-11-19 07:59:42,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1422 transitions.
[2023-11-19 07:59:42,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:59:42,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1422 transitions.
[2023-11-19 07:59:42,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 355.5) internal successors, (1422), 4 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:42,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 866.0) internal successors, (4330), 5 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:42,380 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 866.0) internal successors, (4330), 5 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:42,380 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 171 flow. Second operand 4 states and 1422 transitions.
[2023-11-19 07:59:42,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 87 transitions, 345 flow
[2023-11-19 07:59:42,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 341 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:59:42,384 INFO L231 Difference]: Finished difference. Result has 83 places, 86 transitions, 206 flow
[2023-11-19 07:59:42,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=866, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=83, PETRI_TRANSITIONS=86}
[2023-11-19 07:59:42,389 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, -57 predicate places.
[2023-11-19 07:59:42,389 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 86 transitions, 206 flow
[2023-11-19 07:59:42,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:42,392 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:59:42,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-11-19 07:59:42,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-19 07:59:42,393 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] ===
[2023-11-19 07:59:42,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:59:42,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1506429187, now seen corresponding path program 1 times
[2023-11-19 07:59:42,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:59:42,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851210200]
[2023-11-19 07:59:42,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:59:42,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:59:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:59:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:59:43,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:59:43,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851210200]
[2023-11-19 07:59:43,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851210200] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:59:43,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:59:43,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 07:59:43,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710906739]
[2023-11-19 07:59:43,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:59:43,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-19 07:59:43,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:59:43,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-19 07:59:43,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-19 07:59:45,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 866
[2023-11-19 07:59:45,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 86 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:45,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:59:45,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 866
[2023-11-19 07:59:45,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:59:47,385 INFO L124 PetriNetUnfolderBase]: 6660/10373 cut-off events.
[2023-11-19 07:59:47,385 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES.
[2023-11-19 07:59:47,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20873 conditions, 10373 events. 6660/10373 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 57863 event pairs, 1569 based on Foata normal form. 41/5842 useless extension candidates. Maximal degree in co-relation 20867. Up to 9678 conditions per place.
[2023-11-19 07:59:47,444 INFO L140 encePairwiseOnDemand]: 859/866 looper letters, 105 selfloop transitions, 11 changer transitions 0/122 dead transitions.
[2023-11-19 07:59:47,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 122 transitions, 518 flow
[2023-11-19 07:59:47,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 07:59:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 07:59:47,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1442 transitions.
[2023-11-19 07:59:47,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41628175519630484
[2023-11-19 07:59:47,452 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1442 transitions.
[2023-11-19 07:59:47,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1442 transitions.
[2023-11-19 07:59:47,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:59:47,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1442 transitions.
[2023-11-19 07:59:47,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 360.5) internal successors, (1442), 4 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:47,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 866.0) internal successors, (4330), 5 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:47,467 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 866.0) internal successors, (4330), 5 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:47,468 INFO L175 Difference]: Start difference. First operand has 83 places, 86 transitions, 206 flow. Second operand 4 states and 1442 transitions.
[2023-11-19 07:59:47,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 122 transitions, 518 flow
[2023-11-19 07:59:47,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 122 transitions, 518 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-11-19 07:59:47,473 INFO L231 Difference]: Finished difference. Result has 88 places, 93 transitions, 273 flow
[2023-11-19 07:59:47,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=866, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=88, PETRI_TRANSITIONS=93}
[2023-11-19 07:59:47,474 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, -52 predicate places.
[2023-11-19 07:59:47,474 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 93 transitions, 273 flow
[2023-11-19 07:59:47,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:47,476 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:59:47,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-11-19 07:59:47,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-19 07:59:47,476 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] ===
[2023-11-19 07:59:47,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:59:47,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1506377999, now seen corresponding path program 1 times
[2023-11-19 07:59:47,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:59:47,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331989117]
[2023-11-19 07:59:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:59:47,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:59:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:59:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:59:47,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:59:47,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331989117]
[2023-11-19 07:59:47,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331989117] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:59:47,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:59:47,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:59:47,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109816986]
[2023-11-19 07:59:47,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:59:47,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:59:47,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:59:47,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:59:47,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:59:47,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 866
[2023-11-19 07:59:47,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 93 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 344.25) internal successors, (1377), 4 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:47,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:59:47,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 866
[2023-11-19 07:59:47,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:59:48,520 INFO L124 PetriNetUnfolderBase]: 4651/7507 cut-off events.
[2023-11-19 07:59:48,520 INFO L125 PetriNetUnfolderBase]: For 954/1032 co-relation queries the response was YES.
[2023-11-19 07:59:48,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15522 conditions, 7507 events. 4651/7507 cut-off events. For 954/1032 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 41596 event pairs, 3818 based on Foata normal form. 26/4698 useless extension candidates. Maximal degree in co-relation 15513. Up to 7093 conditions per place.
[2023-11-19 07:59:48,574 INFO L140 encePairwiseOnDemand]: 863/866 looper letters, 80 selfloop transitions, 2 changer transitions 0/92 dead transitions.
[2023-11-19 07:59:48,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 92 transitions, 435 flow
[2023-11-19 07:59:48,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:59:48,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:59:48,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1102 transitions.
[2023-11-19 07:59:48,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4241724403387221
[2023-11-19 07:59:48,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1102 transitions.
[2023-11-19 07:59:48,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1102 transitions.
[2023-11-19 07:59:48,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:59:48,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1102 transitions.
[2023-11-19 07:59:48,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 367.3333333333333) internal successors, (1102), 3 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:48,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 866.0) internal successors, (3464), 4 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:48,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 866.0) internal successors, (3464), 4 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:48,592 INFO L175 Difference]: Start difference. First operand has 88 places, 93 transitions, 273 flow. Second operand 3 states and 1102 transitions.
[2023-11-19 07:59:48,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 92 transitions, 435 flow
[2023-11-19 07:59:48,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 427 flow, removed 4 selfloop flow, removed 0 redundant places.
[2023-11-19 07:59:48,598 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 267 flow
[2023-11-19 07:59:48,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=866, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=89, PETRI_TRANSITIONS=92}
[2023-11-19 07:59:48,601 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, -51 predicate places.
[2023-11-19 07:59:48,601 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 267 flow
[2023-11-19 07:59:48,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 344.25) internal successors, (1377), 4 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:48,603 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:59:48,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-11-19 07:59:48,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-11-19 07:59:48,611 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] ===
[2023-11-19 07:59:48,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:59:48,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1506378000, now seen corresponding path program 1 times
[2023-11-19 07:59:48,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:59:48,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231492730]
[2023-11-19 07:59:48,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:59:48,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:59:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:59:48,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:59:48,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:59:48,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231492730]
[2023-11-19 07:59:48,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231492730] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:59:48,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:59:48,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:59:48,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561355991]
[2023-11-19 07:59:48,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:59:48,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:59:48,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:59:48,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:59:48,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:59:48,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 866
[2023-11-19 07:59:48,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 350.25) internal successors, (1401), 4 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:48,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:59:48,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 866
[2023-11-19 07:59:48,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:59:49,563 INFO L124 PetriNetUnfolderBase]: 2870/4816 cut-off events.
[2023-11-19 07:59:49,564 INFO L125 PetriNetUnfolderBase]: For 415/449 co-relation queries the response was YES.
[2023-11-19 07:59:49,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9891 conditions, 4816 events. 2870/4816 cut-off events. For 415/449 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 25877 event pairs, 2298 based on Foata normal form. 17/3473 useless extension candidates. Maximal degree in co-relation 9881. Up to 4536 conditions per place.
[2023-11-19 07:59:49,585 INFO L140 encePairwiseOnDemand]: 863/866 looper letters, 79 selfloop transitions, 2 changer transitions 0/91 dead transitions.
[2023-11-19 07:59:49,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 427 flow
[2023-11-19 07:59:49,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:59:49,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:59:49,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1119 transitions.
[2023-11-19 07:59:49,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43071593533487296
[2023-11-19 07:59:49,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1119 transitions.
[2023-11-19 07:59:49,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1119 transitions.
[2023-11-19 07:59:49,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:59:49,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1119 transitions.
[2023-11-19 07:59:49,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:49,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 866.0) internal successors, (3464), 4 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:49,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 866.0) internal successors, (3464), 4 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:49,604 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 267 flow. Second operand 3 states and 1119 transitions.
[2023-11-19 07:59:49,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 427 flow
[2023-11-19 07:59:49,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 91 transitions, 423 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:59:49,609 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 265 flow
[2023-11-19 07:59:49,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=866, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=88, PETRI_TRANSITIONS=91}
[2023-11-19 07:59:49,611 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, -52 predicate places.
[2023-11-19 07:59:49,611 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 265 flow
[2023-11-19 07:59:49,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 350.25) internal successors, (1401), 4 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:49,612 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:59:49,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-11-19 07:59:49,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2023-11-19 07:59:49,613 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] ===
[2023-11-19 07:59:49,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:59:49,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1506428258, now seen corresponding path program 1 times
[2023-11-19 07:59:49,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:59:49,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776083676]
[2023-11-19 07:59:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:59:49,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:59:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:59:49,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:59:49,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:59:49,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776083676]
[2023-11-19 07:59:49,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776083676] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:59:49,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:59:49,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 07:59:49,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625522268]
[2023-11-19 07:59:49,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:59:49,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-19 07:59:49,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:59:49,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-19 07:59:49,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-19 07:59:50,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 866
[2023-11-19 07:59:50,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:50,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:59:50,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 866
[2023-11-19 07:59:50,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:59:51,074 INFO L124 PetriNetUnfolderBase]: 2578/4311 cut-off events.
[2023-11-19 07:59:51,074 INFO L125 PetriNetUnfolderBase]: For 351/355 co-relation queries the response was YES.
[2023-11-19 07:59:51,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8844 conditions, 4311 events. 2578/4311 cut-off events. For 351/355 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 23096 event pairs, 1018 based on Foata normal form. 110/3239 useless extension candidates. Maximal degree in co-relation 8834. Up to 1940 conditions per place.
[2023-11-19 07:59:51,101 INFO L140 encePairwiseOnDemand]: 846/866 looper letters, 110 selfloop transitions, 18 changer transitions 0/138 dead transitions.
[2023-11-19 07:59:51,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 138 transitions, 625 flow
[2023-11-19 07:59:51,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-19 07:59:51,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-11-19 07:59:51,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1771 transitions.
[2023-11-19 07:59:51,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090069284064665
[2023-11-19 07:59:51,110 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1771 transitions.
[2023-11-19 07:59:51,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1771 transitions.
[2023-11-19 07:59:51,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:59:51,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1771 transitions.
[2023-11-19 07:59:51,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 354.2) internal successors, (1771), 5 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:51,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 866.0) internal successors, (5196), 6 states have internal predecessors, (5196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:51,130 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 866.0) internal successors, (5196), 6 states have internal predecessors, (5196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:51,130 INFO L175 Difference]: Start difference. First operand has 88 places, 91 transitions, 265 flow. Second operand 5 states and 1771 transitions.
[2023-11-19 07:59:51,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 138 transitions, 625 flow
[2023-11-19 07:59:51,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 138 transitions, 621 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:59:51,138 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 272 flow
[2023-11-19 07:59:51,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=866, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=86, PETRI_TRANSITIONS=85}
[2023-11-19 07:59:51,140 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, -54 predicate places.
[2023-11-19 07:59:51,140 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 272 flow
[2023-11-19 07:59:51,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:51,141 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:59:51,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:59:51,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2023-11-19 07:59:51,142 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] ===
[2023-11-19 07:59:51,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:59:51,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1606118042, now seen corresponding path program 1 times
[2023-11-19 07:59:51,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:59:51,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434519306]
[2023-11-19 07:59:51,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:59:51,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:59:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:59:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:59:51,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:59:51,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434519306]
[2023-11-19 07:59:51,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434519306] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:59:51,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:59:51,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:59:51,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195894319]
[2023-11-19 07:59:51,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:59:51,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:59:51,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:59:51,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:59:51,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:59:51,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 866
[2023-11-19 07:59:51,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 354.6666666666667) internal successors, (1064), 3 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:51,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:59:51,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 866
[2023-11-19 07:59:51,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:59:51,776 INFO L124 PetriNetUnfolderBase]: 1762/3029 cut-off events.
[2023-11-19 07:59:51,776 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES.
[2023-11-19 07:59:51,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6682 conditions, 3029 events. 1762/3029 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13362 event pairs, 911 based on Foata normal form. 0/2366 useless extension candidates. Maximal degree in co-relation 6672. Up to 1824 conditions per place.
[2023-11-19 07:59:51,791 INFO L140 encePairwiseOnDemand]: 862/866 looper letters, 96 selfloop transitions, 3 changer transitions 0/107 dead transitions.
[2023-11-19 07:59:51,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 107 transitions, 513 flow
[2023-11-19 07:59:51,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:59:51,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:59:51,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1153 transitions.
[2023-11-19 07:59:51,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44380292532717475
[2023-11-19 07:59:51,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1153 transitions.
[2023-11-19 07:59:51,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1153 transitions.
[2023-11-19 07:59:51,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:59:51,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1153 transitions.
[2023-11-19 07:59:51,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 384.3333333333333) internal successors, (1153), 3 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:51,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 866.0) internal successors, (3464), 4 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:51,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 866.0) internal successors, (3464), 4 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:51,810 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 272 flow. Second operand 3 states and 1153 transitions.
[2023-11-19 07:59:51,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 107 transitions, 513 flow
[2023-11-19 07:59:51,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 107 transitions, 444 flow, removed 2 selfloop flow, removed 9 redundant places.
[2023-11-19 07:59:51,816 INFO L231 Difference]: Finished difference. Result has 79 places, 79 transitions, 198 flow
[2023-11-19 07:59:51,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=866, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=79, PETRI_TRANSITIONS=79}
[2023-11-19 07:59:51,817 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, -61 predicate places.
[2023-11-19 07:59:51,817 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 79 transitions, 198 flow
[2023-11-19 07:59:51,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 354.6666666666667) internal successors, (1064), 3 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:59:51,818 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:59:51,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:59:51,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2023-11-19 07:59:51,818 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 139 more)] ===
[2023-11-19 07:59:51,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:59:51,819 INFO L85 PathProgramCache]: Analyzing trace with hash -817268332, now seen corresponding path program 1 times
[2023-11-19 07:59:51,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:59:51,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395918480]
[2023-11-19 07:59:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:59:51,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:59:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:59:52,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:59:52,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:59:52,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395918480]
[2023-11-19 07:59:52,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395918480] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:59:52,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:59:52,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-19 07:59:52,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332165441]
[2023-11-19 07:59:52,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:59:52,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-19 07:59:52,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:59:52,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-19 07:59:52,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30