./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 9bd2c7ff
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/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_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/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_81826c0f-bd03-49e4-b595-0b6642be4681/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 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:55:19,105 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:55:19,213 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2023-11-19 07:55:19,227 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:55:19,228 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:55:19,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:55:19,266 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:55:19,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:55:19,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:55:19,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:55:19,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:55:19,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:55:19,275 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:55:19,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:55:19,278 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 07:55:19,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:55:19,279 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 07:55:19,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:55:19,280 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2023-11-19 07:55:19,280 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2023-11-19 07:55:19,281 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2023-11-19 07:55:19,281 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:55:19,282 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-11-19 07:55:19,282 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2023-11-19 07:55:19,283 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 07:55:19,285 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:55:19,286 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:55:19,286 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:55:19,287 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:55:19,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:55:19,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:55:19,289 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:55:19,289 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:55:19,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:55:19,290 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:55:19,290 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:55:19,291 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:55:19,291 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:55:19,292 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_81826c0f-bd03-49e4-b595-0b6642be4681/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f
[2023-11-19 07:55:19,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:55:19,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:55:19,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:55:19,617 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:55:19,618 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:55:19,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i
[2023-11-19 07:55:22,675 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:55:23,065 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:55:23,066 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i
[2023-11-19 07:55:23,088 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/data/392bca81c/8a740fe6a12c4dd98cf926db1f32faeb/FLAG12aec6c89
[2023-11-19 07:55:23,103 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/data/392bca81c/8a740fe6a12c4dd98cf926db1f32faeb
[2023-11-19 07:55:23,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:55:23,108 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:55:23,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:55:23,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:55:23,123 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:55:23,124 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:23" (1/1) ...
[2023-11-19 07:55:23,125 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19523aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23, skipping insertion in model container
[2023-11-19 07:55:23,125 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:23" (1/1) ...
[2023-11-19 07:55:23,179 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:55:23,631 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:55:23,652 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 07:55:23,720 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:55:23,759 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:55:23,768 INFO L206 MainTranslator]: Completed translation
[2023-11-19 07:55:23,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23 WrapperNode
[2023-11-19 07:55:23,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:55:23,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:55:23,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:55:23,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:55:23,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ...
[2023-11-19 07:55:23,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ...
[2023-11-19 07:55:23,860 INFO L138 Inliner]: procedures = 173, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 140
[2023-11-19 07:55:23,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:55:23,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:55:23,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:55:23,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:55:23,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ...
[2023-11-19 07:55:23,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ...
[2023-11-19 07:55:23,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ...
[2023-11-19 07:55:23,888 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ...
[2023-11-19 07:55:23,908 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ...
[2023-11-19 07:55:23,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ...
[2023-11-19 07:55:23,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ...
[2023-11-19 07:55:23,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ...
[2023-11-19 07:55:23,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:55:23,924 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:55:23,925 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:55:23,926 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:55:23,927 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (1/1) ...
[2023-11-19 07:55:23,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:55:23,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:55:23,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:55:24,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:55:24,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-11-19 07:55:24,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-11-19 07:55:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2023-11-19 07:55:24,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:55:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:55:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun
[2023-11-19 07:55:24,029 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun
[2023-11-19 07:55:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:55:24,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:55:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:55:24,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:55:24,032 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 07:55:24,274 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 07:55:24,277 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:55:24,619 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 07:55:24,630 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:55:24,635 INFO L302 CfgBuilder]: Removed 11 assume(true) statements.
[2023-11-19 07:55:24,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:24 BoogieIcfgContainer
[2023-11-19 07:55:24,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:55:24,643 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:55:24,644 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:55:24,647 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:55:24,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:55:23" (1/3) ...
[2023-11-19 07:55:24,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33151821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:24, skipping insertion in model container
[2023-11-19 07:55:24,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:23" (2/3) ...
[2023-11-19 07:55:24,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33151821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:24, skipping insertion in model container
[2023-11-19 07:55:24,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:24" (3/3) ...
[2023-11-19 07:55:24,651 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i
[2023-11-19 07:55:24,669 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:55:24,669 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations.
[2023-11-19 07:55:24,670 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-11-19 07:55:24,736 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions.
[2023-11-19 07:55:24,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 161 transitions, 329 flow
[2023-11-19 07:55:24,873 INFO L124 PetriNetUnfolderBase]: 27/247 cut-off events.
[2023-11-19 07:55:24,873 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2023-11-19 07:55:24,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 247 events. 27/247 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 751 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 122. Up to 6 conditions per place.
[2023-11-19 07:55:24,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 161 transitions, 329 flow
[2023-11-19 07:55:24,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 161 transitions, 329 flow
[2023-11-19 07:55:24,892 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:55:24,903 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 161 transitions, 329 flow
[2023-11-19 07:55:24,906 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 161 transitions, 329 flow
[2023-11-19 07:55:24,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 161 transitions, 329 flow
[2023-11-19 07:55:24,964 INFO L124 PetriNetUnfolderBase]: 27/247 cut-off events.
[2023-11-19 07:55:24,964 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2023-11-19 07:55:24,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 247 events. 27/247 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 751 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 122. Up to 6 conditions per place.
[2023-11-19 07:55:24,971 INFO L119 LiptonReduction]: Number of co-enabled transitions 4968
[2023-11-19 07:55:29,559 INFO L134 LiptonReduction]: Checked pairs total: 6907
[2023-11-19 07:55:29,559 INFO L136 LiptonReduction]: Total number of compositions: 155
[2023-11-19 07:55:29,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:55:29,584 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;@7b7d571e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:55:29,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations.
[2023-11-19 07:55:29,587 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 07:55:29,587 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events.
[2023-11-19 07:55:29,587 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:55:29,588 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:55:29,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1]
[2023-11-19 07:55:29,589 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] ===
[2023-11-19 07:55:29,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:55:29,594 INFO L85 PathProgramCache]: Analyzing trace with hash 19398, now seen corresponding path program 1 times
[2023-11-19 07:55:29,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:55:29,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535524610]
[2023-11-19 07:55:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:29,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:55:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:55:29,918 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 07:55:29,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:55:29,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535524610]
[2023-11-19 07:55:29,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535524610] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:55:29,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:55:29,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:55:29,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308684505]
[2023-11-19 07:55:29,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:55:29,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:55:29,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:55:29,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:55:29,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:55:30,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 316
[2023-11-19 07:55:30,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 41 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:55:30,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:55:30,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 316
[2023-11-19 07:55:30,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:55:30,182 INFO L124 PetriNetUnfolderBase]: 95/227 cut-off events.
[2023-11-19 07:55:30,182 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2023-11-19 07:55:30,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 227 events. 95/227 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 939 event pairs, 70 based on Foata normal form. 24/184 useless extension candidates. Maximal degree in co-relation 397. Up to 190 conditions per place.
[2023-11-19 07:55:30,190 INFO L140 encePairwiseOnDemand]: 302/316 looper letters, 29 selfloop transitions, 3 changer transitions 0/35 dead transitions.
[2023-11-19 07:55:30,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 35 transitions, 141 flow
[2023-11-19 07:55:30,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:55:30,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:55:30,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions.
[2023-11-19 07:55:30,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47890295358649787
[2023-11-19 07:55:30,217 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions.
[2023-11-19 07:55:30,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions.
[2023-11-19 07:55:30,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:55:30,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions.
[2023-11-19 07:55:30,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 07:55:30,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states 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 07:55:30,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states 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 07:55:30,237 INFO L175 Difference]: Start difference. First operand has 32 places, 41 transitions, 89 flow. Second operand 3 states and 454 transitions.
[2023-11-19 07:55:30,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 35 transitions, 141 flow
[2023-11-19 07:55:30,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 141 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-11-19 07:55:30,243 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 73 flow
[2023-11-19 07:55:30,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=30}
[2023-11-19 07:55:30,249 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places.
[2023-11-19 07:55:30,249 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 73 flow
[2023-11-19 07:55:30,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:55:30,250 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:55:30,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1]
[2023-11-19 07:55:30,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 07:55:30,251 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] ===
[2023-11-19 07:55:30,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:55:30,252 INFO L85 PathProgramCache]: Analyzing trace with hash 19399, now seen corresponding path program 1 times
[2023-11-19 07:55:30,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:55:30,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599186483]
[2023-11-19 07:55:30,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:30,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:55:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:55:30,440 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 07:55:30,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:55:30,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599186483]
[2023-11-19 07:55:30,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599186483] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:55:30,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:55:30,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:55:30,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720687071]
[2023-11-19 07:55:30,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:55:30,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:55:30,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:55:30,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:55:30,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:55:30,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 316
[2023-11-19 07:55:30,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states 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 07:55:30,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:55:30,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 316
[2023-11-19 07:55:30,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:55:30,597 INFO L124 PetriNetUnfolderBase]: 92/215 cut-off events.
[2023-11-19 07:55:30,598 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2023-11-19 07:55:30,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 215 events. 92/215 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 977 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 405. Up to 195 conditions per place.
[2023-11-19 07:55:30,600 INFO L140 encePairwiseOnDemand]: 312/316 looper letters, 31 selfloop transitions, 2 changer transitions 0/36 dead transitions.
[2023-11-19 07:55:30,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 151 flow
[2023-11-19 07:55:30,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:55:30,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:55:30,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions.
[2023-11-19 07:55:30,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47362869198312235
[2023-11-19 07:55:30,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions.
[2023-11-19 07:55:30,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions.
[2023-11-19 07:55:30,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:55:30,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions.
[2023-11-19 07:55:30,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:55:30,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states 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 07:55:30,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 316.0) internal successors, (1264), 4 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states 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 07:55:30,630 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 73 flow. Second operand 3 states and 449 transitions.
[2023-11-19 07:55:30,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 151 flow
[2023-11-19 07:55:30,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 145 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:55:30,633 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 77 flow
[2023-11-19 07:55:30,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=33, PETRI_TRANSITIONS=30}
[2023-11-19 07:55:30,634 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places.
[2023-11-19 07:55:30,634 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 77 flow
[2023-11-19 07:55:30,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states 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 07:55:30,635 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:55:30,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-11-19 07:55:30,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 07:55:30,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] ===
[2023-11-19 07:55:30,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:55:30,636 INFO L85 PathProgramCache]: Analyzing trace with hash 578278302, now seen corresponding path program 1 times
[2023-11-19 07:55:30,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:55:30,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138427492]
[2023-11-19 07:55:30,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:30,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:55:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:55:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:55:30,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:55:30,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138427492]
[2023-11-19 07:55:30,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138427492] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:55:30,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563907312]
[2023-11-19 07:55:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:30,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:55:30,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:55:30,764 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:55:30,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-19 07:55:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:55:30,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-19 07:55:30,881 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:55:30,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-11-19 07:55:31,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:55:31,079 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:55:31,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:55:31,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563907312] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:55:31,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:55:31,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6
[2023-11-19 07:55:31,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312976133]
[2023-11-19 07:55:31,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:55:31,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-19 07:55:31,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:55:31,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-19 07:55:31,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2023-11-19 07:55:31,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 316
[2023-11-19 07:55:31,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 77 flow. Second operand has 8 states, 8 states have (on average 135.875) internal successors, (1087), 8 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states 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 07:55:31,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:55:31,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 316
[2023-11-19 07:55:31,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:55:31,377 INFO L124 PetriNetUnfolderBase]: 10/37 cut-off events.
[2023-11-19 07:55:31,378 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES.
[2023-11-19 07:55:31,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 37 events. 10/37 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 90 event pairs, 0 based on Foata normal form. 6/40 useless extension candidates. Maximal degree in co-relation 67. Up to 22 conditions per place.
[2023-11-19 07:55:31,379 INFO L140 encePairwiseOnDemand]: 312/316 looper letters, 13 selfloop transitions, 2 changer transitions 0/17 dead transitions.
[2023-11-19 07:55:31,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 17 transitions, 74 flow
[2023-11-19 07:55:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 07:55:31,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 07:55:31,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 553 transitions.
[2023-11-19 07:55:31,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375
[2023-11-19 07:55:31,383 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 553 transitions.
[2023-11-19 07:55:31,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 553 transitions.
[2023-11-19 07:55:31,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:55:31,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 553 transitions.
[2023-11-19 07:55:31,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 0 states have call successors, (0), 0 states 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 07:55:31,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states 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 07:55:31,392 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states 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 07:55:31,392 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 77 flow. Second operand 4 states and 553 transitions.
[2023-11-19 07:55:31,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 17 transitions, 74 flow
[2023-11-19 07:55:31,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 17 transitions, 68 flow, removed 0 selfloop flow, removed 3 redundant places.
[2023-11-19 07:55:31,394 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 30 flow
[2023-11-19 07:55:31,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=30, PETRI_PLACES=17, PETRI_TRANSITIONS=11}
[2023-11-19 07:55:31,395 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -15 predicate places.
[2023-11-19 07:55:31,396 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 30 flow
[2023-11-19 07:55:31,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.875) internal successors, (1087), 8 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states 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 07:55:31,397 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:55:31,398 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1]
[2023-11-19 07:55:31,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-19 07:55:31,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:55:31,617 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] ===
[2023-11-19 07:55:31,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:55:31,618 INFO L85 PathProgramCache]: Analyzing trace with hash 746758536, now seen corresponding path program 1 times
[2023-11-19 07:55:31,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:55:31,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126491110]
[2023-11-19 07:55:31,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:31,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:55:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:55:31,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-19 07:55:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:55:31,690 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-11-19 07:55:31,690 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-11-19 07:55:31,691 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining)
[2023-11-19 07:55:31,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining)
[2023-11-19 07:55:31,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining)
[2023-11-19 07:55:31,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining)
[2023-11-19 07:55:31,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining)
[2023-11-19 07:55:31,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining)
[2023-11-19 07:55:31,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining)
[2023-11-19 07:55:31,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining)
[2023-11-19 07:55:31,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-19 07:55:31,698 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2023-11-19 07:55:31,700 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis
[2023-11-19 07:55:31,701 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances.
[2023-11-19 07:55:31,735 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2023-11-19 07:55:31,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 190 transitions, 396 flow
[2023-11-19 07:55:31,806 INFO L124 PetriNetUnfolderBase]: 45/393 cut-off events.
[2023-11-19 07:55:31,807 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES.
[2023-11-19 07:55:31,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 393 events. 45/393 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1499 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 249. Up to 9 conditions per place.
[2023-11-19 07:55:31,810 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 190 transitions, 396 flow
[2023-11-19 07:55:31,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 190 transitions, 396 flow
[2023-11-19 07:55:31,814 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:55:31,814 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 190 transitions, 396 flow
[2023-11-19 07:55:31,814 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 190 transitions, 396 flow
[2023-11-19 07:55:31,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 190 transitions, 396 flow
[2023-11-19 07:55:31,864 INFO L124 PetriNetUnfolderBase]: 45/393 cut-off events.
[2023-11-19 07:55:31,864 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES.
[2023-11-19 07:55:31,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 393 events. 45/393 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1499 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 249. Up to 9 conditions per place.
[2023-11-19 07:55:31,879 INFO L119 LiptonReduction]: Number of co-enabled transitions 11988
[2023-11-19 07:55:36,420 INFO L134 LiptonReduction]: Checked pairs total: 18568
[2023-11-19 07:55:36,420 INFO L136 LiptonReduction]: Total number of compositions: 184
[2023-11-19 07:55:36,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:55:36,432 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;@7b7d571e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:55:36,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations.
[2023-11-19 07:55:36,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 07:55:36,434 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events.
[2023-11-19 07:55:36,434 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:55:36,434 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:55:36,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1]
[2023-11-19 07:55:36,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] ===
[2023-11-19 07:55:36,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:55:36,435 INFO L85 PathProgramCache]: Analyzing trace with hash 32289, now seen corresponding path program 1 times
[2023-11-19 07:55:36,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:55:36,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090868908]
[2023-11-19 07:55:36,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:36,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:55:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:55:36,481 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 07:55:36,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:55:36,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090868908]
[2023-11-19 07:55:36,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090868908] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:55:36,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:55:36,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:55:36,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726396061]
[2023-11-19 07:55:36,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:55:36,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:55:36,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:55:36,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:55:36,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:55:36,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 374
[2023-11-19 07:55:36,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 57 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 07:55:36,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:55:36,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 374
[2023-11-19 07:55:36,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:55:36,958 INFO L124 PetriNetUnfolderBase]: 1647/2698 cut-off events.
[2023-11-19 07:55:36,958 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES.
[2023-11-19 07:55:36,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5406 conditions, 2698 events. 1647/2698 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 13867 event pairs, 1332 based on Foata normal form. 57/2072 useless extension candidates. Maximal degree in co-relation 2016. Up to 2345 conditions per place.
[2023-11-19 07:55:36,978 INFO L140 encePairwiseOnDemand]: 356/374 looper letters, 45 selfloop transitions, 3 changer transitions 0/52 dead transitions.
[2023-11-19 07:55:36,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 216 flow
[2023-11-19 07:55:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:55:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:55:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions.
[2023-11-19 07:55:36,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486
[2023-11-19 07:55:36,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions.
[2023-11-19 07:55:36,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions.
[2023-11-19 07:55:36,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:55:36,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions.
[2023-11-19 07:55:36,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 07:55:36,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:55:36,989 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:55:36,990 INFO L175 Difference]: Start difference. First operand has 45 places, 57 transitions, 130 flow. Second operand 3 states and 544 transitions.
[2023-11-19 07:55:36,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 216 flow
[2023-11-19 07:55:36,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-11-19 07:55:36,994 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 102 flow
[2023-11-19 07:55:36,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=40}
[2023-11-19 07:55:36,997 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places.
[2023-11-19 07:55:36,997 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 102 flow
[2023-11-19 07:55:36,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 07:55:36,998 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:55:36,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1]
[2023-11-19 07:55:36,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-19 07:55:36,998 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] ===
[2023-11-19 07:55:36,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:55:36,999 INFO L85 PathProgramCache]: Analyzing trace with hash 32290, now seen corresponding path program 1 times
[2023-11-19 07:55:36,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:55:36,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486590493]
[2023-11-19 07:55:37,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:37,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:55:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:55:37,100 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 07:55:37,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:55:37,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486590493]
[2023-11-19 07:55:37,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486590493] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:55:37,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:55:37,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:55:37,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999435910]
[2023-11-19 07:55:37,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:55:37,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:55:37,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:55:37,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:55:37,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:55:37,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 374
[2023-11-19 07:55:37,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:55:37,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:55:37,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 374
[2023-11-19 07:55:37,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:55:37,542 INFO L124 PetriNetUnfolderBase]: 1647/2709 cut-off events.
[2023-11-19 07:55:37,542 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES.
[2023-11-19 07:55:37,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5546 conditions, 2709 events. 1647/2709 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13942 event pairs, 708 based on Foata normal form. 0/2092 useless extension candidates. Maximal degree in co-relation 4770. Up to 2656 conditions per place.
[2023-11-19 07:55:37,563 INFO L140 encePairwiseOnDemand]: 370/374 looper letters, 42 selfloop transitions, 3 changer transitions 0/49 dead transitions.
[2023-11-19 07:55:37,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 210 flow
[2023-11-19 07:55:37,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:55:37,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:55:37,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions.
[2023-11-19 07:55:37,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46880570409982175
[2023-11-19 07:55:37,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions.
[2023-11-19 07:55:37,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions.
[2023-11-19 07:55:37,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:55:37,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions.
[2023-11-19 07:55:37,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:55:37,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:55:37,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:55:37,574 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 102 flow. Second operand 3 states and 526 transitions.
[2023-11-19 07:55:37,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 210 flow
[2023-11-19 07:55:37,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:55:37,580 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 115 flow
[2023-11-19 07:55:37,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=44, PETRI_TRANSITIONS=42}
[2023-11-19 07:55:37,586 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places.
[2023-11-19 07:55:37,586 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 115 flow
[2023-11-19 07:55:37,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:55:37,587 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:55:37,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1]
[2023-11-19 07:55:37,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-19 07:55:37,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] ===
[2023-11-19 07:55:37,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:55:37,588 INFO L85 PathProgramCache]: Analyzing trace with hash 31079126, now seen corresponding path program 1 times
[2023-11-19 07:55:37,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:55:37,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342436063]
[2023-11-19 07:55:37,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:37,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:55:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:55:37,623 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 07:55:37,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:55:37,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342436063]
[2023-11-19 07:55:37,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342436063] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:55:37,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:55:37,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:55:37,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364910172]
[2023-11-19 07:55:37,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:55:37,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:55:37,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:55:37,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:55:37,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:55:37,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 374
[2023-11-19 07:55:37,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 07:55:37,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:55:37,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 374
[2023-11-19 07:55:37,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:55:37,975 INFO L124 PetriNetUnfolderBase]: 1644/2697 cut-off events.
[2023-11-19 07:55:37,976 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES.
[2023-11-19 07:55:37,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5571 conditions, 2697 events. 1644/2697 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13742 event pairs, 708 based on Foata normal form. 1/2076 useless extension candidates. Maximal degree in co-relation 1072. Up to 2645 conditions per place.
[2023-11-19 07:55:37,998 INFO L140 encePairwiseOnDemand]: 371/374 looper letters, 42 selfloop transitions, 2 changer transitions 0/48 dead transitions.
[2023-11-19 07:55:37,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 212 flow
[2023-11-19 07:55:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:55:38,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:55:38,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 528 transitions.
[2023-11-19 07:55:38,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764
[2023-11-19 07:55:38,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 528 transitions.
[2023-11-19 07:55:38,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 528 transitions.
[2023-11-19 07:55:38,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:55:38,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 528 transitions.
[2023-11-19 07:55:38,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:55:38,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:55:38,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:55:38,019 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 115 flow. Second operand 3 states and 528 transitions.
[2023-11-19 07:55:38,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 212 flow
[2023-11-19 07:55:38,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:55:38,024 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 112 flow
[2023-11-19 07:55:38,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=45, PETRI_TRANSITIONS=41}
[2023-11-19 07:55:38,026 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places.
[2023-11-19 07:55:38,027 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 112 flow
[2023-11-19 07:55:38,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 07:55:38,027 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:55:38,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2023-11-19 07:55:38,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-19 07:55:38,028 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] ===
[2023-11-19 07:55:38,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:55:38,029 INFO L85 PathProgramCache]: Analyzing trace with hash -221878975, now seen corresponding path program 1 times
[2023-11-19 07:55:38,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:55:38,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711673232]
[2023-11-19 07:55:38,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:38,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:55:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:55:38,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:55:38,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:55:38,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711673232]
[2023-11-19 07:55:38,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711673232] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:55:38,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780794657]
[2023-11-19 07:55:38,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:38,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:55:38,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:55:38,144 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:55:38,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-19 07:55:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:55:38,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-19 07:55:38,236 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:55:38,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-11-19 07:55:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:55:38,299 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:55:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:55:38,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780794657] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:55:38,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:55:38,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6
[2023-11-19 07:55:38,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074544958]
[2023-11-19 07:55:38,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:55:38,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-19 07:55:38,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:55:38,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-19 07:55:38,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2023-11-19 07:55:38,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 374
[2023-11-19 07:55:38,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 112 flow. Second operand has 8 states, 8 states have (on average 158.875) internal successors, (1271), 8 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states 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 07:55:38,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:55:38,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 374
[2023-11-19 07:55:38,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:55:38,892 INFO L124 PetriNetUnfolderBase]: 1485/2503 cut-off events.
[2023-11-19 07:55:38,892 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES.
[2023-11-19 07:55:38,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 2503 events. 1485/2503 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12981 event pairs, 1 based on Foata normal form. 7/1981 useless extension candidates. Maximal degree in co-relation 960. Up to 1991 conditions per place.
[2023-11-19 07:55:38,912 INFO L140 encePairwiseOnDemand]: 370/374 looper letters, 64 selfloop transitions, 4 changer transitions 0/72 dead transitions.
[2023-11-19 07:55:38,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 72 transitions, 308 flow
[2023-11-19 07:55:38,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-19 07:55:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-11-19 07:55:38,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 856 transitions.
[2023-11-19 07:55:38,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577540106951872
[2023-11-19 07:55:38,917 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 856 transitions.
[2023-11-19 07:55:38,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 856 transitions.
[2023-11-19 07:55:38,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:55:38,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 856 transitions.
[2023-11-19 07:55:38,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 07:55:38,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states 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 07:55:38,926 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states 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 07:55:38,926 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 112 flow. Second operand 5 states and 856 transitions.
[2023-11-19 07:55:38,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 72 transitions, 308 flow
[2023-11-19 07:55:38,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:55:38,929 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 112 flow
[2023-11-19 07:55:38,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=46, PETRI_TRANSITIONS=40}
[2023-11-19 07:55:38,930 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places.
[2023-11-19 07:55:38,930 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 112 flow
[2023-11-19 07:55:38,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 158.875) internal successors, (1271), 8 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states 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 07:55:38,932 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:55:38,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2023-11-19 07:55:38,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-19 07:55:39,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2023-11-19 07:55:39,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] ===
[2023-11-19 07:55:39,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:55:39,154 INFO L85 PathProgramCache]: Analyzing trace with hash -221622444, now seen corresponding path program 1 times
[2023-11-19 07:55:39,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:55:39,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440467249]
[2023-11-19 07:55:39,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:39,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:55:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:55:39,215 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 07:55:39,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:55:39,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440467249]
[2023-11-19 07:55:39,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440467249] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:55:39,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:55:39,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:55:39,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735846441]
[2023-11-19 07:55:39,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:55:39,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:55:39,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:55:39,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:55:39,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:55:39,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 374
[2023-11-19 07:55:39,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states 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 07:55:39,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:55:39,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 374
[2023-11-19 07:55:39,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:55:39,689 INFO L124 PetriNetUnfolderBase]: 2255/3817 cut-off events.
[2023-11-19 07:55:39,689 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES.
[2023-11-19 07:55:39,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7734 conditions, 3817 events. 2255/3817 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 20238 event pairs, 1016 based on Foata normal form. 0/3071 useless extension candidates. Maximal degree in co-relation 3076. Up to 1879 conditions per place.
[2023-11-19 07:55:39,716 INFO L140 encePairwiseOnDemand]: 367/374 looper letters, 58 selfloop transitions, 5 changer transitions 0/67 dead transitions.
[2023-11-19 07:55:39,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 67 transitions, 298 flow
[2023-11-19 07:55:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:55:39,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:55:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 556 transitions.
[2023-11-19 07:55:39,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49554367201426025
[2023-11-19 07:55:39,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 556 transitions.
[2023-11-19 07:55:39,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 556 transitions.
[2023-11-19 07:55:39,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:55:39,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 556 transitions.
[2023-11-19 07:55:39,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states 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 07:55:39,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:55:39,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states 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 07:55:39,726 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 112 flow. Second operand 3 states and 556 transitions.
[2023-11-19 07:55:39,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 67 transitions, 298 flow
[2023-11-19 07:55:39,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 288 flow, removed 2 selfloop flow, removed 3 redundant places.
[2023-11-19 07:55:39,729 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 142 flow
[2023-11-19 07:55:39,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=44}
[2023-11-19 07:55:39,730 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places.
[2023-11-19 07:55:39,731 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 142 flow
[2023-11-19 07:55:39,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states 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 07:55:39,731 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:55:39,731 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1]
[2023-11-19 07:55:39,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2023-11-19 07:55:39,732 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] ===
[2023-11-19 07:55:39,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:55:39,732 INFO L85 PathProgramCache]: Analyzing trace with hash -892530309, now seen corresponding path program 1 times
[2023-11-19 07:55:39,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:55:39,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956155060]
[2023-11-19 07:55:39,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:39,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:55:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:55:39,748 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-19 07:55:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:55:39,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-11-19 07:55:39,765 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-11-19 07:55:39,766 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining)
[2023-11-19 07:55:39,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining)
[2023-11-19 07:55:39,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining)
[2023-11-19 07:55:39,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining)
[2023-11-19 07:55:39,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining)
[2023-11-19 07:55:39,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (3 of 9 remaining)
[2023-11-19 07:55:39,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 9 remaining)
[2023-11-19 07:55:39,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining)
[2023-11-19 07:55:39,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining)
[2023-11-19 07:55:39,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2023-11-19 07:55:39,768 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1]
[2023-11-19 07:55:39,769 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis
[2023-11-19 07:55:39,769 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances.
[2023-11-19 07:55:39,792 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2023-11-19 07:55:39,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 219 transitions, 465 flow
[2023-11-19 07:55:39,892 INFO L124 PetriNetUnfolderBase]: 68/584 cut-off events.
[2023-11-19 07:55:39,892 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES.
[2023-11-19 07:55:39,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 584 events. 68/584 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2531 event pairs, 1 based on Foata normal form. 0/477 useless extension candidates. Maximal degree in co-relation 401. Up to 16 conditions per place.
[2023-11-19 07:55:39,897 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 219 transitions, 465 flow
[2023-11-19 07:55:39,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 219 transitions, 465 flow
[2023-11-19 07:55:39,903 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:55:39,903 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 219 transitions, 465 flow
[2023-11-19 07:55:39,904 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 219 transitions, 465 flow
[2023-11-19 07:55:39,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 219 transitions, 465 flow
[2023-11-19 07:55:40,012 INFO L124 PetriNetUnfolderBase]: 68/584 cut-off events.
[2023-11-19 07:55:40,012 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES.
[2023-11-19 07:55:40,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 584 events. 68/584 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2531 event pairs, 1 based on Foata normal form. 0/477 useless extension candidates. Maximal degree in co-relation 401. Up to 16 conditions per place.
[2023-11-19 07:55:40,043 INFO L119 LiptonReduction]: Number of co-enabled transitions 20412
[2023-11-19 07:55:44,621 INFO L134 LiptonReduction]: Checked pairs total: 31287
[2023-11-19 07:55:44,622 INFO L136 LiptonReduction]: Total number of compositions: 206
[2023-11-19 07:55:44,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:55:44,633 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;@7b7d571e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:55:44,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations.
[2023-11-19 07:55:44,636 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 07:55:44,636 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events.
[2023-11-19 07:55:44,636 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:55:44,636 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:55:44,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1]
[2023-11-19 07:55:44,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 07:55:44,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:55:44,638 INFO L85 PathProgramCache]: Analyzing trace with hash 46821, now seen corresponding path program 1 times
[2023-11-19 07:55:44,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:55:44,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758665438]
[2023-11-19 07:55:44,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:44,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:55:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:55:44,669 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 07:55:44,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:55:44,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758665438]
[2023-11-19 07:55:44,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758665438] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:55:44,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:55:44,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:55:44,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450661281]
[2023-11-19 07:55:44,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:55:44,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:55:44,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:55:44,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:55:44,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:55:44,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 425
[2023-11-19 07:55:44,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 68 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states 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 07:55:44,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:55:44,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 425
[2023-11-19 07:55:44,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:55:47,301 INFO L124 PetriNetUnfolderBase]: 13453/19999 cut-off events.
[2023-11-19 07:55:47,302 INFO L125 PetriNetUnfolderBase]: For 613/613 co-relation queries the response was YES.
[2023-11-19 07:55:47,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39517 conditions, 19999 events. 13453/19999 cut-off events. For 613/613 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 136920 event pairs, 11079 based on Foata normal form. 3517/17760 useless extension candidates. Maximal degree in co-relation 4793. Up to 16672 conditions per place.
[2023-11-19 07:55:47,441 INFO L140 encePairwiseOnDemand]: 405/425 looper letters, 55 selfloop transitions, 3 changer transitions 0/65 dead transitions.
[2023-11-19 07:55:47,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 65 transitions, 273 flow
[2023-11-19 07:55:47,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:55:47,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:55:47,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions.
[2023-11-19 07:55:47,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894117647058824
[2023-11-19 07:55:47,445 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions.
[2023-11-19 07:55:47,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions.
[2023-11-19 07:55:47,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:55:47,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions.
[2023-11-19 07:55:47,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 07:55:47,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states 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 07:55:47,453 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states 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 07:55:47,453 INFO L175 Difference]: Start difference. First operand has 55 places, 68 transitions, 163 flow. Second operand 3 states and 624 transitions.
[2023-11-19 07:55:47,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 65 transitions, 273 flow
[2023-11-19 07:55:47,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 65 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-11-19 07:55:47,456 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 131 flow
[2023-11-19 07:55:47,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=53, PETRI_TRANSITIONS=49}
[2023-11-19 07:55:47,458 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places.
[2023-11-19 07:55:47,458 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 131 flow
[2023-11-19 07:55:47,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states 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 07:55:47,458 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:55:47,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1]
[2023-11-19 07:55:47,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2023-11-19 07:55:47,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 07:55:47,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:55:47,460 INFO L85 PathProgramCache]: Analyzing trace with hash 46822, now seen corresponding path program 1 times
[2023-11-19 07:55:47,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:55:47,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307967482]
[2023-11-19 07:55:47,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:47,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:55:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:55:47,508 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 07:55:47,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:55:47,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307967482]
[2023-11-19 07:55:47,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307967482] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:55:47,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:55:47,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:55:47,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111981802]
[2023-11-19 07:55:47,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:55:47,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:55:47,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:55:47,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:55:47,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:55:47,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 425
[2023-11-19 07:55:47,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 07:55:47,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:55:47,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 425
[2023-11-19 07:55:47,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:55:50,068 INFO L124 PetriNetUnfolderBase]: 13450/19940 cut-off events.
[2023-11-19 07:55:50,068 INFO L125 PetriNetUnfolderBase]: For 869/869 co-relation queries the response was YES.
[2023-11-19 07:55:50,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40232 conditions, 19940 events. 13450/19940 cut-off events. For 869/869 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 134012 event pairs, 8322 based on Foata normal form. 0/14589 useless extension candidates. Maximal degree in co-relation 34383. Up to 19145 conditions per place.
[2023-11-19 07:55:50,310 INFO L140 encePairwiseOnDemand]: 421/425 looper letters, 47 selfloop transitions, 2 changer transitions 0/56 dead transitions.
[2023-11-19 07:55:50,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 56 transitions, 243 flow
[2023-11-19 07:55:50,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:55:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:55:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions.
[2023-11-19 07:55:50,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682352941176471
[2023-11-19 07:55:50,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions.
[2023-11-19 07:55:50,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions.
[2023-11-19 07:55:50,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:55:50,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions.
[2023-11-19 07:55:50,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states 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 07:55:50,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states 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 07:55:50,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states 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 07:55:50,323 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 131 flow. Second operand 3 states and 597 transitions.
[2023-11-19 07:55:50,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 56 transitions, 243 flow
[2023-11-19 07:55:50,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 237 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:55:50,374 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 139 flow
[2023-11-19 07:55:50,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=54, PETRI_TRANSITIONS=50}
[2023-11-19 07:55:50,376 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places.
[2023-11-19 07:55:50,377 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 139 flow
[2023-11-19 07:55:50,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 07:55:50,378 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:55:50,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2023-11-19 07:55:50,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2023-11-19 07:55:50,379 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 07:55:50,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:55:50,380 INFO L85 PathProgramCache]: Analyzing trace with hash 327362108, now seen corresponding path program 1 times
[2023-11-19 07:55:50,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:55:50,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096413889]
[2023-11-19 07:55:50,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:50,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:55:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:55:50,462 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 07:55:50,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:55:50,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096413889]
[2023-11-19 07:55:50,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096413889] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:55:50,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:55:50,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:55:50,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462520025]
[2023-11-19 07:55:50,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:55:50,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:55:50,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:55:50,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:55:50,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:55:50,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 425
[2023-11-19 07:55:50,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states 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 07:55:50,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:55:50,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 425
[2023-11-19 07:55:50,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:55:53,294 INFO L124 PetriNetUnfolderBase]: 17173/25862 cut-off events.
[2023-11-19 07:55:53,295 INFO L125 PetriNetUnfolderBase]: For 886/886 co-relation queries the response was YES.
[2023-11-19 07:55:53,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51695 conditions, 25862 events. 17173/25862 cut-off events. For 886/886 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 173663 event pairs, 8157 based on Foata normal form. 0/20099 useless extension candidates. Maximal degree in co-relation 51649. Up to 14777 conditions per place.
[2023-11-19 07:55:53,432 INFO L140 encePairwiseOnDemand]: 417/425 looper letters, 69 selfloop transitions, 4 changer transitions 0/80 dead transitions.
[2023-11-19 07:55:53,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 80 transitions, 354 flow
[2023-11-19 07:55:53,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:55:53,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:55:53,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions.
[2023-11-19 07:55:53,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972549019607843
[2023-11-19 07:55:53,436 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions.
[2023-11-19 07:55:53,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions.
[2023-11-19 07:55:53,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:55:53,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions.
[2023-11-19 07:55:53,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 07:55:53,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states 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 07:55:53,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states 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 07:55:53,442 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 139 flow. Second operand 3 states and 634 transitions.
[2023-11-19 07:55:53,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 80 transitions, 354 flow
[2023-11-19 07:55:53,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 80 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:55:53,447 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 173 flow
[2023-11-19 07:55:53,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=57, PETRI_TRANSITIONS=53}
[2023-11-19 07:55:53,448 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places.
[2023-11-19 07:55:53,448 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 173 flow
[2023-11-19 07:55:53,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states 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 07:55:53,448 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:55:53,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2023-11-19 07:55:53,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2023-11-19 07:55:53,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 07:55:53,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:55:53,450 INFO L85 PathProgramCache]: Analyzing trace with hash 327038626, now seen corresponding path program 1 times
[2023-11-19 07:55:53,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:55:53,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887383067]
[2023-11-19 07:55:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:53,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:55:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:55:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:55:53,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:55:53,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887383067]
[2023-11-19 07:55:53,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887383067] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:55:53,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819905368]
[2023-11-19 07:55:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:53,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:55:53,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:55:53,525 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:55:53,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-19 07:55:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:55:53,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-19 07:55:53,615 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:55:53,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-11-19 07:55:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:55:53,658 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:55:53,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:55:53,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819905368] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:55:53,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:55:53,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5
[2023-11-19 07:55:53,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255239616]
[2023-11-19 07:55:53,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:55:53,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-19 07:55:53,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:55:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-19 07:55:53,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2023-11-19 07:55:53,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 425
[2023-11-19 07:55:53,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 173 flow. Second operand has 7 states, 7 states have (on average 180.71428571428572) internal successors, (1265), 7 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states 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 07:55:53,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:55:53,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 425
[2023-11-19 07:55:53,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:55:56,531 INFO L124 PetriNetUnfolderBase]: 16750/25147 cut-off events.
[2023-11-19 07:55:56,531 INFO L125 PetriNetUnfolderBase]: For 4537/4537 co-relation queries the response was YES.
[2023-11-19 07:55:56,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55452 conditions, 25147 events. 16750/25147 cut-off events. For 4537/4537 co-relation queries the response was YES. Maximal size of possible extension queue 846. Compared 171790 event pairs, 3061 based on Foata normal form. 5/21617 useless extension candidates. Maximal degree in co-relation 14327. Up to 22933 conditions per place.
[2023-11-19 07:55:56,676 INFO L140 encePairwiseOnDemand]: 421/425 looper letters, 80 selfloop transitions, 6 changer transitions 0/93 dead transitions.
[2023-11-19 07:55:56,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 93 transitions, 433 flow
[2023-11-19 07:55:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2023-11-19 07:55:56,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2023-11-19 07:55:56,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1161 transitions.
[2023-11-19 07:55:56,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45529411764705885
[2023-11-19 07:55:56,687 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1161 transitions.
[2023-11-19 07:55:56,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1161 transitions.
[2023-11-19 07:55:56,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:55:56,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1161 transitions.
[2023-11-19 07:55:56,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states 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 07:55:56,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states 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 07:55:56,704 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states 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 07:55:56,705 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 173 flow. Second operand 6 states and 1161 transitions.
[2023-11-19 07:55:56,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 93 transitions, 433 flow
[2023-11-19 07:55:56,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 425 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:55:56,719 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 181 flow
[2023-11-19 07:55:56,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=59, PETRI_TRANSITIONS=54}
[2023-11-19 07:55:56,720 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places.
[2023-11-19 07:55:56,721 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 181 flow
[2023-11-19 07:55:56,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 180.71428571428572) internal successors, (1265), 7 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states 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 07:55:56,722 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:55:56,722 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:55:56,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-19 07:55:56,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:55:56,935 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 07:55:56,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:55:56,936 INFO L85 PathProgramCache]: Analyzing trace with hash 11936683, now seen corresponding path program 1 times
[2023-11-19 07:55:56,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:55:56,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918849810]
[2023-11-19 07:55:56,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:55:56,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:55:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:55:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2023-11-19 07:55:56,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:55:56,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918849810]
[2023-11-19 07:55:56,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918849810] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:55:56,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:55:56,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 07:55:56,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544820781]
[2023-11-19 07:55:56,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:55:56,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:55:56,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:55:56,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:55:56,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:55:57,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 425
[2023-11-19 07:55:57,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states 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 07:55:57,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:55:57,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 425
[2023-11-19 07:55:57,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:55:59,866 INFO L124 PetriNetUnfolderBase]: 22655/33590 cut-off events.
[2023-11-19 07:55:59,867 INFO L125 PetriNetUnfolderBase]: For 3997/3997 co-relation queries the response was YES.
[2023-11-19 07:55:59,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73494 conditions, 33590 events. 22655/33590 cut-off events. For 3997/3997 co-relation queries the response was YES. Maximal size of possible extension queue 1262. Compared 233049 event pairs, 14700 based on Foata normal form. 0/28873 useless extension candidates. Maximal degree in co-relation 10166. Up to 24728 conditions per place.
[2023-11-19 07:56:00,023 INFO L140 encePairwiseOnDemand]: 421/425 looper letters, 70 selfloop transitions, 4 changer transitions 0/81 dead transitions.
[2023-11-19 07:56:00,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 81 transitions, 401 flow
[2023-11-19 07:56:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:56:00,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:56:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 616 transitions.
[2023-11-19 07:56:00,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831372549019608
[2023-11-19 07:56:00,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 616 transitions.
[2023-11-19 07:56:00,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 616 transitions.
[2023-11-19 07:56:00,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:00,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 616 transitions.
[2023-11-19 07:56:00,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 07:56:00,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states 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 07:56:00,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states 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 07:56:00,035 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 181 flow. Second operand 3 states and 616 transitions.
[2023-11-19 07:56:00,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 81 transitions, 401 flow
[2023-11-19 07:56:00,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 386 flow, removed 4 selfloop flow, removed 3 redundant places.
[2023-11-19 07:56:00,040 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 188 flow
[2023-11-19 07:56:00,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=59, PETRI_TRANSITIONS=56}
[2023-11-19 07:56:00,041 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places.
[2023-11-19 07:56:00,041 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 188 flow
[2023-11-19 07:56:00,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states 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 07:56:00,042 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:00,042 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:56:00,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2023-11-19 07:56:00,043 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 07:56:00,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:00,043 INFO L85 PathProgramCache]: Analyzing trace with hash 370063613, now seen corresponding path program 1 times
[2023-11-19 07:56:00,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:00,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183914730]
[2023-11-19 07:56:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:00,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:00,096 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2023-11-19 07:56:00,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:56:00,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183914730]
[2023-11-19 07:56:00,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183914730] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:56:00,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203782968]
[2023-11-19 07:56:00,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:00,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:56:00,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:56:00,099 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:56:00,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-19 07:56:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:00,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-11-19 07:56:00,210 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2023-11-19 07:56:00,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:56:00,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203782968] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:00,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-19 07:56:00,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5
[2023-11-19 07:56:00,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354870680]
[2023-11-19 07:56:00,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:00,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:56:00,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:56:00,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:56:00,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-19 07:56:00,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 425
[2023-11-19 07:56:00,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 07:56:00,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:00,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 425
[2023-11-19 07:56:00,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:03,249 INFO L124 PetriNetUnfolderBase]: 21003/31357 cut-off events.
[2023-11-19 07:56:03,249 INFO L125 PetriNetUnfolderBase]: For 4056/4056 co-relation queries the response was YES.
[2023-11-19 07:56:03,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70922 conditions, 31357 events. 21003/31357 cut-off events. For 4056/4056 co-relation queries the response was YES. Maximal size of possible extension queue 1180. Compared 216316 event pairs, 15583 based on Foata normal form. 0/28116 useless extension candidates. Maximal degree in co-relation 9853. Up to 25211 conditions per place.
[2023-11-19 07:56:03,401 INFO L140 encePairwiseOnDemand]: 421/425 looper letters, 70 selfloop transitions, 2 changer transitions 0/79 dead transitions.
[2023-11-19 07:56:03,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 79 transitions, 399 flow
[2023-11-19 07:56:03,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:56:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:56:03,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 614 transitions.
[2023-11-19 07:56:03,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4815686274509804
[2023-11-19 07:56:03,406 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 614 transitions.
[2023-11-19 07:56:03,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 614 transitions.
[2023-11-19 07:56:03,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:03,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 614 transitions.
[2023-11-19 07:56:03,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states 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 07:56:03,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states 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 07:56:03,413 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states 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 07:56:03,414 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 188 flow. Second operand 3 states and 614 transitions.
[2023-11-19 07:56:03,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 79 transitions, 399 flow
[2023-11-19 07:56:03,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:56:03,423 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 198 flow
[2023-11-19 07:56:03,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=61, PETRI_TRANSITIONS=57}
[2023-11-19 07:56:03,424 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places.
[2023-11-19 07:56:03,425 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 198 flow
[2023-11-19 07:56:03,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 07:56:03,425 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:03,426 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:56:03,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2023-11-19 07:56:03,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:56:03,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 07:56:03,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:03,636 INFO L85 PathProgramCache]: Analyzing trace with hash 370063482, now seen corresponding path program 1 times
[2023-11-19 07:56:03,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:03,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978176356]
[2023-11-19 07:56:03,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:03,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2023-11-19 07:56:03,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:56:03,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978176356]
[2023-11-19 07:56:03,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978176356] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:56:03,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803845872]
[2023-11-19 07:56:03,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:03,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:56:03,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:56:03,705 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:56:03,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-19 07:56:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:03,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-11-19 07:56:03,802 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 07:56:03,830 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:56:03,864 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 07:56:03,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803845872] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:56:03,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:56:03,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10
[2023-11-19 07:56:03,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347966372]
[2023-11-19 07:56:03,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:56:03,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-11-19 07:56:03,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:56:03,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-11-19 07:56:03,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2023-11-19 07:56:03,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 425
[2023-11-19 07:56:03,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 198 flow. Second operand has 10 states, 10 states have (on average 178.7) internal successors, (1787), 10 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states 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 07:56:03,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:03,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 425
[2023-11-19 07:56:03,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:04,126 INFO L124 PetriNetUnfolderBase]: 908/1562 cut-off events.
[2023-11-19 07:56:04,126 INFO L125 PetriNetUnfolderBase]: For 700/700 co-relation queries the response was YES.
[2023-11-19 07:56:04,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3310 conditions, 1562 events. 908/1562 cut-off events. For 700/700 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8218 event pairs, 0 based on Foata normal form. 150/1711 useless extension candidates. Maximal degree in co-relation 3301. Up to 850 conditions per place.
[2023-11-19 07:56:04,135 INFO L140 encePairwiseOnDemand]: 422/425 looper letters, 43 selfloop transitions, 4 changer transitions 0/52 dead transitions.
[2023-11-19 07:56:04,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 231 flow
[2023-11-19 07:56:04,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2023-11-19 07:56:04,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2023-11-19 07:56:04,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1105 transitions.
[2023-11-19 07:56:04,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335
[2023-11-19 07:56:04,142 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1105 transitions.
[2023-11-19 07:56:04,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1105 transitions.
[2023-11-19 07:56:04,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:04,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1105 transitions.
[2023-11-19 07:56:04,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 184.16666666666666) internal successors, (1105), 6 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states 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 07:56:04,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states 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 07:56:04,155 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states 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 07:56:04,156 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 198 flow. Second operand 6 states and 1105 transitions.
[2023-11-19 07:56:04,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 231 flow
[2023-11-19 07:56:04,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 221 flow, removed 4 selfloop flow, removed 2 redundant places.
[2023-11-19 07:56:04,159 INFO L231 Difference]: Finished difference. Result has 42 places, 25 transitions, 81 flow
[2023-11-19 07:56:04,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=42, PETRI_TRANSITIONS=25}
[2023-11-19 07:56:04,160 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -13 predicate places.
[2023-11-19 07:56:04,160 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 25 transitions, 81 flow
[2023-11-19 07:56:04,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 178.7) internal successors, (1787), 10 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states 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 07:56:04,161 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:04,162 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1]
[2023-11-19 07:56:04,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-19 07:56:04,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81826c0f-bd03-49e4-b595-0b6642be4681/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-11-19 07:56:04,375 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] ===
[2023-11-19 07:56:04,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:04,376 INFO L85 PathProgramCache]: Analyzing trace with hash -641553999, now seen corresponding path program 1 times
[2023-11-19 07:56:04,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:56:04,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611923241]
[2023-11-19 07:56:04,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:04,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:56:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:56:04,403 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-19 07:56:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:56:04,437 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-11-19 07:56:04,462 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-11-19 07:56:04,463 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining)
[2023-11-19 07:56:04,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining)
[2023-11-19 07:56:04,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining)
[2023-11-19 07:56:04,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining)
[2023-11-19 07:56:04,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining)
[2023-11-19 07:56:04,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining)
[2023-11-19 07:56:04,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining)
[2023-11-19 07:56:04,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 10 remaining)
[2023-11-19 07:56:04,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining)
[2023-11-19 07:56:04,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining)
[2023-11-19 07:56:04,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2023-11-19 07:56:04,465 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:56:04,466 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis
[2023-11-19 07:56:04,466 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances.
[2023-11-19 07:56:04,495 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions.
[2023-11-19 07:56:04,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 248 transitions, 536 flow
[2023-11-19 07:56:04,631 INFO L124 PetriNetUnfolderBase]: 103/867 cut-off events.
[2023-11-19 07:56:04,632 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES.
[2023-11-19 07:56:04,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 867 events. 103/867 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4179 event pairs, 6 based on Foata normal form. 0/702 useless extension candidates. Maximal degree in co-relation 604. Up to 32 conditions per place.
[2023-11-19 07:56:04,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 248 transitions, 536 flow
[2023-11-19 07:56:04,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 248 transitions, 536 flow
[2023-11-19 07:56:04,649 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:56:04,650 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 248 transitions, 536 flow
[2023-11-19 07:56:04,652 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 248 transitions, 536 flow
[2023-11-19 07:56:04,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 248 transitions, 536 flow
[2023-11-19 07:56:04,905 INFO L124 PetriNetUnfolderBase]: 103/867 cut-off events.
[2023-11-19 07:56:04,905 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES.
[2023-11-19 07:56:04,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 867 events. 103/867 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4179 event pairs, 6 based on Foata normal form. 0/702 useless extension candidates. Maximal degree in co-relation 604. Up to 32 conditions per place.
[2023-11-19 07:56:04,944 INFO L119 LiptonReduction]: Number of co-enabled transitions 30456