./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c --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_25fbff6a-4102-4ed4-bf11-4d033fbcaef4/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fbff6a-4102-4ed4-bf11-4d033fbcaef4/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_25fbff6a-4102-4ed4-bf11-4d033fbcaef4/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fbff6a-4102-4ed4-bf11-4d033fbcaef4/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fbff6a-4102-4ed4-bf11-4d033fbcaef4/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_25fbff6a-4102-4ed4-bf11-4d033fbcaef4/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 df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:57:45,200 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:57:45,340 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fbff6a-4102-4ed4-bf11-4d033fbcaef4/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2023-11-19 07:57:45,346 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:57:45,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:57:45,391 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:57:45,392 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:57:45,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:57:45,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:57:45,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:57:45,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:57:45,401 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:57:45,401 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:57:45,403 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:57:45,404 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 07:57:45,404 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:57:45,405 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 07:57:45,405 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:57:45,406 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2023-11-19 07:57:45,406 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2023-11-19 07:57:45,406 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2023-11-19 07:57:45,407 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:57:45,408 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-11-19 07:57:45,408 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2023-11-19 07:57:45,408 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 07:57:45,409 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:57:45,410 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:57:45,410 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:57:45,436 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:57:45,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:57:45,438 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:57:45,438 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:57:45,438 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:57:45,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:57:45,439 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:57:45,439 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:57:45,439 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:57:45,440 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:57:45,440 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_25fbff6a-4102-4ed4-bf11-4d033fbcaef4/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fbff6a-4102-4ed4-bf11-4d033fbcaef4/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024
[2023-11-19 07:57:45,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:57:45,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:57:45,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:57:45,844 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:57:45,845 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:57:45,846 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fbff6a-4102-4ed4-bf11-4d033fbcaef4/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c
[2023-11-19 07:57:48,967 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:57:49,213 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:57:49,214 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fbff6a-4102-4ed4-bf11-4d033fbcaef4/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c
[2023-11-19 07:57:49,223 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fbff6a-4102-4ed4-bf11-4d033fbcaef4/bin/uautomizer-verify-uCwYo4JHxu/data/00d716d06/51e643aef057496da3e562e20d43ac8e/FLAGbcc6cc1f3
[2023-11-19 07:57:49,236 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fbff6a-4102-4ed4-bf11-4d033fbcaef4/bin/uautomizer-verify-uCwYo4JHxu/data/00d716d06/51e643aef057496da3e562e20d43ac8e
[2023-11-19 07:57:49,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:57:49,240 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:57:49,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:57:49,242 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:57:49,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:57:49,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:49" (1/1) ...
[2023-11-19 07:57:49,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9a8156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49, skipping insertion in model container
[2023-11-19 07:57:49,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:49" (1/1) ...
[2023-11-19 07:57:49,283 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:57:49,525 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:57:49,537 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 07:57:49,567 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:57:49,583 INFO L206 MainTranslator]: Completed translation
[2023-11-19 07:57:49,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49 WrapperNode
[2023-11-19 07:57:49,584 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:57:49,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:57:49,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:57:49,586 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:57:49,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ...
[2023-11-19 07:57:49,616 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ...
[2023-11-19 07:57:49,644 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133
[2023-11-19 07:57:49,644 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:57:49,645 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:57:49,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:57:49,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:57:49,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ...
[2023-11-19 07:57:49,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ...
[2023-11-19 07:57:49,664 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ...
[2023-11-19 07:57:49,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ...
[2023-11-19 07:57:49,678 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ...
[2023-11-19 07:57:49,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ...
[2023-11-19 07:57:49,720 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ...
[2023-11-19 07:57:49,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ...
[2023-11-19 07:57:49,743 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:57:49,744 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:57:49,744 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:57:49,744 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:57:49,745 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ...
[2023-11-19 07:57:49,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:57:49,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fbff6a-4102-4ed4-bf11-4d033fbcaef4/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:57:49,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fbff6a-4102-4ed4-bf11-4d033fbcaef4/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:57:49,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fbff6a-4102-4ed4-bf11-4d033fbcaef4/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:57:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:57:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:57:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-11-19 07:57:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-11-19 07:57:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2023-11-19 07:57:49,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2023-11-19 07:57:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2023-11-19 07:57:49,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2023-11-19 07:57:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure thread3
[2023-11-19 07:57:49,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3
[2023-11-19 07:57:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure thread4
[2023-11-19 07:57:49,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4
[2023-11-19 07:57:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:57:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread5
[2023-11-19 07:57:49,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5
[2023-11-19 07:57:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread6
[2023-11-19 07:57:49,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6
[2023-11-19 07:57:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:57:49,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:57:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:57:49,829 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 07:57:49,943 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 07:57:49,945 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:57:50,375 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 07:57:50,387 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:57:50,387 INFO L302 CfgBuilder]: Removed 6 assume(true) statements.
[2023-11-19 07:57:50,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:50 BoogieIcfgContainer
[2023-11-19 07:57:50,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:57:50,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:57:50,406 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:57:50,410 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:57:50,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:49" (1/3) ...
[2023-11-19 07:57:50,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0e650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:50, skipping insertion in model container
[2023-11-19 07:57:50,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (2/3) ...
[2023-11-19 07:57:50,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0e650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:50, skipping insertion in model container
[2023-11-19 07:57:50,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:50" (3/3) ...
[2023-11-19 07:57:50,414 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c
[2023-11-19 07:57:50,436 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:57:50,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations.
[2023-11-19 07:57:50,437 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-11-19 07:57:50,598 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions.
[2023-11-19 07:57:50,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 209 transitions, 460 flow
[2023-11-19 07:57:50,743 INFO L124 PetriNetUnfolderBase]: 14/203 cut-off events.
[2023-11-19 07:57:50,743 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES.
[2023-11-19 07:57:50,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 203 events. 14/203 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place.
[2023-11-19 07:57:50,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 209 transitions, 460 flow
[2023-11-19 07:57:50,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 198 transitions, 432 flow
[2023-11-19 07:57:50,769 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:57:50,785 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 198 transitions, 432 flow
[2023-11-19 07:57:50,788 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 198 transitions, 432 flow
[2023-11-19 07:57:50,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 198 transitions, 432 flow
[2023-11-19 07:57:50,848 INFO L124 PetriNetUnfolderBase]: 14/198 cut-off events.
[2023-11-19 07:57:50,848 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES.
[2023-11-19 07:57:50,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 198 events. 14/198 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place.
[2023-11-19 07:57:50,855 INFO L119 LiptonReduction]: Number of co-enabled transitions 4620
[2023-11-19 07:58:01,423 INFO L134 LiptonReduction]: Checked pairs total: 5992
[2023-11-19 07:58:01,423 INFO L136 LiptonReduction]: Total number of compositions: 185
[2023-11-19 07:58:01,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:58:01,449 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;@6e7491a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:58:01,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations.
[2023-11-19 07:58:01,451 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 07:58:01,452 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events.
[2023-11-19 07:58:01,452 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:58:01,452 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:58:01,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1]
[2023-11-19 07:58:01,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] ===
[2023-11-19 07:58:01,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:58:01,461 INFO L85 PathProgramCache]: Analyzing trace with hash 744, now seen corresponding path program 1 times
[2023-11-19 07:58:01,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:58:01,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545847503]
[2023-11-19 07:58:01,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:58:01,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:58:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:58:01,590 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 07:58:01,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:58:01,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545847503]
[2023-11-19 07:58:01,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545847503] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:58:01,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:58:01,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0
[2023-11-19 07:58:01,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555876260]
[2023-11-19 07:58:01,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:58:01,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-19 07:58:01,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:58:01,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-19 07:58:01,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 07:58:01,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 394
[2023-11-19 07:58:01,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 188.5) internal successors, (377), 2 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 07:58:01,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:58:01,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 394
[2023-11-19 07:58:01,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:58:06,835 INFO L124 PetriNetUnfolderBase]: 36808/42631 cut-off events.
[2023-11-19 07:58:06,836 INFO L125 PetriNetUnfolderBase]: For 647/647 co-relation queries the response was YES.
[2023-11-19 07:58:06,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86034 conditions, 42631 events. 36808/42631 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 1253. Compared 153540 event pairs, 17676 based on Foata normal form. 0/20471 useless extension candidates. Maximal degree in co-relation 65244. Up to 42304 conditions per place.
[2023-11-19 07:58:07,370 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 59 selfloop transitions, 0 changer transitions 0/65 dead transitions.
[2023-11-19 07:58:07,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 65 transitions, 284 flow
[2023-11-19 07:58:07,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-11-19 07:58:07,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2023-11-19 07:58:07,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 438 transitions.
[2023-11-19 07:58:07,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5558375634517766
[2023-11-19 07:58:07,405 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 438 transitions.
[2023-11-19 07:58:07,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 438 transitions.
[2023-11-19 07:58:07,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:58:07,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 438 transitions.
[2023-11-19 07:58:07,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 219.0) internal successors, (438), 2 states have internal predecessors, (438), 0 states have call successors, (0), 0 states 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 07:58:07,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 394.0) internal successors, (1182), 3 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states 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 07:58:07,430 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 394.0) internal successors, (1182), 3 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states 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 07:58:07,432 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 172 flow. Second operand 2 states and 438 transitions.
[2023-11-19 07:58:07,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 65 transitions, 284 flow
[2023-11-19 07:58:07,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 260 flow, removed 0 selfloop flow, removed 12 redundant places.
[2023-11-19 07:58:07,559 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 142 flow
[2023-11-19 07:58:07,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=142, PETRI_PLACES=67, PETRI_TRANSITIONS=65}
[2023-11-19 07:58:07,567 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -14 predicate places.
[2023-11-19 07:58:07,567 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 142 flow
[2023-11-19 07:58:07,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 188.5) internal successors, (377), 2 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 07:58:07,568 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:58:07,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-11-19 07:58:07,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 07:58:07,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] ===
[2023-11-19 07:58:07,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:58:07,570 INFO L85 PathProgramCache]: Analyzing trace with hash 732756, now seen corresponding path program 1 times
[2023-11-19 07:58:07,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:58:07,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816168703]
[2023-11-19 07:58:07,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:58:07,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:58:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:58:08,309 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 07:58:08,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:58:08,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816168703]
[2023-11-19 07:58:08,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816168703] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:58:08,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:58:08,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:58:08,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798517661]
[2023-11-19 07:58:08,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:58:08,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:58:08,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:58:08,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:58:08,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:58:08,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 394
[2023-11-19 07:58:08,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states 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 07:58:08,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:58:08,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 394
[2023-11-19 07:58:08,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:58:11,723 INFO L124 PetriNetUnfolderBase]: 35185/40762 cut-off events.
[2023-11-19 07:58:11,723 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES.
[2023-11-19 07:58:11,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81563 conditions, 40762 events. 35185/40762 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1213. Compared 146083 event pairs, 16865 based on Foata normal form. 0/19659 useless extension candidates. Maximal degree in co-relation 81560. Up to 40434 conditions per place.
[2023-11-19 07:58:12,014 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 56 selfloop transitions, 1 changer transitions 0/63 dead transitions.
[2023-11-19 07:58:12,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 252 flow
[2023-11-19 07:58:12,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:58:12,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:58:12,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions.
[2023-11-19 07:58:12,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.511844331641286
[2023-11-19 07:58:12,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions.
[2023-11-19 07:58:12,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions.
[2023-11-19 07:58:12,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:58:12,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions.
[2023-11-19 07:58:12,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states 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 07:58:12,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 07:58:12,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 07:58:12,036 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 142 flow. Second operand 3 states and 605 transitions.
[2023-11-19 07:58:12,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 252 flow
[2023-11-19 07:58:12,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-11-19 07:58:12,043 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 140 flow
[2023-11-19 07:58:12,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=67, PETRI_TRANSITIONS=63}
[2023-11-19 07:58:12,045 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -14 predicate places.
[2023-11-19 07:58:12,045 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 140 flow
[2023-11-19 07:58:12,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states 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 07:58:12,054 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:58:12,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-11-19 07:58:12,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 07:58:12,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] ===
[2023-11-19 07:58:12,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:58:12,059 INFO L85 PathProgramCache]: Analyzing trace with hash 732755, now seen corresponding path program 1 times
[2023-11-19 07:58:12,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:58:12,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374048370]
[2023-11-19 07:58:12,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:58:12,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:58:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:58:12,360 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 07:58:12,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:58:12,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374048370]
[2023-11-19 07:58:12,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374048370] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:58:12,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:58:12,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:58:12,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138775124]
[2023-11-19 07:58:12,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:58:12,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:58:12,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:58:12,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:58:12,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:58:12,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 394
[2023-11-19 07:58:12,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 07:58:12,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:58:12,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 394
[2023-11-19 07:58:12,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:58:15,206 INFO L124 PetriNetUnfolderBase]: 33562/38893 cut-off events.
[2023-11-19 07:58:15,206 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES.
[2023-11-19 07:58:15,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77827 conditions, 38893 events. 33562/38893 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 138897 event pairs, 16054 based on Foata normal form. 0/18847 useless extension candidates. Maximal degree in co-relation 77823. Up to 38565 conditions per place.
[2023-11-19 07:58:15,523 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 54 selfloop transitions, 1 changer transitions 0/61 dead transitions.
[2023-11-19 07:58:15,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 246 flow
[2023-11-19 07:58:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:58:15,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:58:15,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 579 transitions.
[2023-11-19 07:58:15,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48984771573604063
[2023-11-19 07:58:15,529 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 579 transitions.
[2023-11-19 07:58:15,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 579 transitions.
[2023-11-19 07:58:15,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:58:15,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 579 transitions.
[2023-11-19 07:58:15,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states 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 07:58:15,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 07:58:15,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 07:58:15,541 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 140 flow. Second operand 3 states and 579 transitions.
[2023-11-19 07:58:15,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 246 flow
[2023-11-19 07:58:15,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 61 transitions, 245 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:58:15,545 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 137 flow
[2023-11-19 07:58:15,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=66, PETRI_TRANSITIONS=61}
[2023-11-19 07:58:15,549 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -15 predicate places.
[2023-11-19 07:58:15,549 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 137 flow
[2023-11-19 07:58:15,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 07:58:15,550 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:58:15,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-11-19 07:58:15,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-19 07:58:15,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] ===
[2023-11-19 07:58:15,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:58:15,559 INFO L85 PathProgramCache]: Analyzing trace with hash 704193213, now seen corresponding path program 1 times
[2023-11-19 07:58:15,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:58:15,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124401566]
[2023-11-19 07:58:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:58:15,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:58:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:58:15,899 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 07:58:15,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:58:15,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124401566]
[2023-11-19 07:58:15,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124401566] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:58:15,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:58:15,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:58:15,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425321445]
[2023-11-19 07:58:15,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:58:15,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:58:15,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:58:15,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:58:15,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:58:16,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 394
[2023-11-19 07:58:16,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states 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 07:58:16,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:58:16,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 394
[2023-11-19 07:58:16,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:58:18,797 INFO L124 PetriNetUnfolderBase]: 33109/38350 cut-off events.
[2023-11-19 07:58:18,797 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES.
[2023-11-19 07:58:18,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76742 conditions, 38350 events. 33109/38350 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 136434 event pairs, 15829 based on Foata normal form. 0/18619 useless extension candidates. Maximal degree in co-relation 76738. Up to 38022 conditions per place.
[2023-11-19 07:58:19,049 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 52 selfloop transitions, 1 changer transitions 0/59 dead transitions.
[2023-11-19 07:58:19,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 59 transitions, 239 flow
[2023-11-19 07:58:19,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:58:19,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:58:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 601 transitions.
[2023-11-19 07:58:19,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084602368866328
[2023-11-19 07:58:19,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 601 transitions.
[2023-11-19 07:58:19,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 601 transitions.
[2023-11-19 07:58:19,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:58:19,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 601 transitions.
[2023-11-19 07:58:19,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states 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 07:58:19,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 07:58:19,065 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 07:58:19,065 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 137 flow. Second operand 3 states and 601 transitions.
[2023-11-19 07:58:19,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 59 transitions, 239 flow
[2023-11-19 07:58:19,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 59 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:58:19,071 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 134 flow
[2023-11-19 07:58:19,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=65, PETRI_TRANSITIONS=59}
[2023-11-19 07:58:19,073 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -16 predicate places.
[2023-11-19 07:58:19,073 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 134 flow
[2023-11-19 07:58:19,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states 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 07:58:19,074 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:58:19,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-11-19 07:58:19,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-19 07:58:19,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] ===
[2023-11-19 07:58:19,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:58:19,076 INFO L85 PathProgramCache]: Analyzing trace with hash 704193215, now seen corresponding path program 1 times
[2023-11-19 07:58:19,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:58:19,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099046879]
[2023-11-19 07:58:19,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:58:19,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:58:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:58:19,268 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 07:58:19,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:58:19,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099046879]
[2023-11-19 07:58:19,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099046879] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:58:19,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:58:19,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:58:19,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146752136]
[2023-11-19 07:58:19,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:58:19,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:58:19,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:58:19,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:58:19,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:58:19,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 394
[2023-11-19 07:58:19,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:19,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:58:19,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 394
[2023-11-19 07:58:19,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:58:21,801 INFO L124 PetriNetUnfolderBase]: 32656/37807 cut-off events.
[2023-11-19 07:58:21,801 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES.
[2023-11-19 07:58:21,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75657 conditions, 37807 events. 32656/37807 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 134463 event pairs, 15604 based on Foata normal form. 0/18391 useless extension candidates. Maximal degree in co-relation 75653. Up to 37479 conditions per place.
[2023-11-19 07:58:22,022 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 50 selfloop transitions, 1 changer transitions 0/57 dead transitions.
[2023-11-19 07:58:22,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 232 flow
[2023-11-19 07:58:22,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:58:22,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:58:22,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions.
[2023-11-19 07:58:22,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48646362098138746
[2023-11-19 07:58:22,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions.
[2023-11-19 07:58:22,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions.
[2023-11-19 07:58:22,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:58:22,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions.
[2023-11-19 07:58:22,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 07:58:22,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 07:58:22,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 07:58:22,035 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 134 flow. Second operand 3 states and 575 transitions.
[2023-11-19 07:58:22,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 232 flow
[2023-11-19 07:58:22,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 231 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:58:22,038 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 131 flow
[2023-11-19 07:58:22,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=64, PETRI_TRANSITIONS=57}
[2023-11-19 07:58:22,042 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -17 predicate places.
[2023-11-19 07:58:22,042 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 131 flow
[2023-11-19 07:58:22,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:22,043 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:58:22,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:58:22,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-19 07:58:22,044 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] ===
[2023-11-19 07:58:22,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:58:22,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1875137253, now seen corresponding path program 1 times
[2023-11-19 07:58:22,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:58:22,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931136319]
[2023-11-19 07:58:22,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:58:22,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:58:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:58:22,247 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 07:58:22,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:58:22,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931136319]
[2023-11-19 07:58:22,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931136319] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:58:22,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:58:22,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:58:22,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137265118]
[2023-11-19 07:58:22,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:58:22,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:58:22,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:58:22,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:58:22,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:58:22,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 394
[2023-11-19 07:58:22,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 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 07:58:22,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:58:22,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 394
[2023-11-19 07:58:22,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:58:24,789 INFO L124 PetriNetUnfolderBase]: 32449/37546 cut-off events.
[2023-11-19 07:58:24,789 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES.
[2023-11-19 07:58:24,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75136 conditions, 37546 events. 32449/37546 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 133380 event pairs, 15505 based on Foata normal form. 0/18292 useless extension candidates. Maximal degree in co-relation 75132. Up to 37218 conditions per place.
[2023-11-19 07:58:25,358 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 48 selfloop transitions, 1 changer transitions 0/55 dead transitions.
[2023-11-19 07:58:25,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 225 flow
[2023-11-19 07:58:25,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:58:25,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:58:25,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions.
[2023-11-19 07:58:25,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050761421319797
[2023-11-19 07:58:25,361 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions.
[2023-11-19 07:58:25,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions.
[2023-11-19 07:58:25,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:58:25,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions.
[2023-11-19 07:58:25,365 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 07:58:25,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 07:58:25,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 07:58:25,370 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 131 flow. Second operand 3 states and 597 transitions.
[2023-11-19 07:58:25,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 225 flow
[2023-11-19 07:58:25,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 55 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:58:25,373 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 128 flow
[2023-11-19 07:58:25,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=63, PETRI_TRANSITIONS=55}
[2023-11-19 07:58:25,375 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -18 predicate places.
[2023-11-19 07:58:25,375 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 128 flow
[2023-11-19 07:58:25,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 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 07:58:25,376 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:58:25,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:58:25,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-19 07:58:25,376 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] ===
[2023-11-19 07:58:25,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:58:25,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1875137254, now seen corresponding path program 1 times
[2023-11-19 07:58:25,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:58:25,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545006161]
[2023-11-19 07:58:25,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:58:25,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:58:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:58:25,479 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 07:58:25,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:58:25,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545006161]
[2023-11-19 07:58:25,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545006161] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:58:25,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:58:25,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:58:25,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199229500]
[2023-11-19 07:58:25,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:58:25,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:58:25,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:58:25,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:58:25,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:58:25,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 394
[2023-11-19 07:58:25,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 07:58:25,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:58:25,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 394
[2023-11-19 07:58:25,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:58:27,968 INFO L124 PetriNetUnfolderBase]: 32242/37285 cut-off events.
[2023-11-19 07:58:27,969 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES.
[2023-11-19 07:58:28,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74615 conditions, 37285 events. 32242/37285 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 132158 event pairs, 15406 based on Foata normal form. 0/18193 useless extension candidates. Maximal degree in co-relation 74611. Up to 36957 conditions per place.
[2023-11-19 07:58:28,220 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 46 selfloop transitions, 1 changer transitions 0/53 dead transitions.
[2023-11-19 07:58:28,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 218 flow
[2023-11-19 07:58:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:58:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:58:28,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 571 transitions.
[2023-11-19 07:58:28,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48307952622673433
[2023-11-19 07:58:28,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 571 transitions.
[2023-11-19 07:58:28,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 571 transitions.
[2023-11-19 07:58:28,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:58:28,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 571 transitions.
[2023-11-19 07:58:28,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states 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 07:58:28,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 07:58:28,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 07:58:28,232 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 128 flow. Second operand 3 states and 571 transitions.
[2023-11-19 07:58:28,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 218 flow
[2023-11-19 07:58:28,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:58:28,236 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 125 flow
[2023-11-19 07:58:28,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=62, PETRI_TRANSITIONS=53}
[2023-11-19 07:58:28,238 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -19 predicate places.
[2023-11-19 07:58:28,238 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 125 flow
[2023-11-19 07:58:28,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 07:58:28,239 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:58:28,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:58:28,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-19 07:58:28,239 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] ===
[2023-11-19 07:58:28,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:58:28,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1879381819, now seen corresponding path program 1 times
[2023-11-19 07:58:28,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:58:28,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259070197]
[2023-11-19 07:58:28,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:58:28,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:58:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:58:28,359 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 07:58:28,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:58:28,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259070197]
[2023-11-19 07:58:28,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259070197] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:58:28,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:58:28,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:58:28,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725262718]
[2023-11-19 07:58:28,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:58:28,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:58:28,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:58:28,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:58:28,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:58:28,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 394
[2023-11-19 07:58:28,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:28,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:58:28,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 394
[2023-11-19 07:58:28,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:58:30,876 INFO L124 PetriNetUnfolderBase]: 31804/36757 cut-off events.
[2023-11-19 07:58:30,877 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES.
[2023-11-19 07:58:30,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73560 conditions, 36757 events. 31804/36757 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 129860 event pairs, 15196 based on Foata normal form. 0/17983 useless extension candidates. Maximal degree in co-relation 73556. Up to 36429 conditions per place.
[2023-11-19 07:58:31,081 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 44 selfloop transitions, 1 changer transitions 0/51 dead transitions.
[2023-11-19 07:58:31,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 51 transitions, 211 flow
[2023-11-19 07:58:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:58:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:58:31,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 569 transitions.
[2023-11-19 07:58:31,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813874788494078
[2023-11-19 07:58:31,087 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 569 transitions.
[2023-11-19 07:58:31,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 569 transitions.
[2023-11-19 07:58:31,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:58:31,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 569 transitions.
[2023-11-19 07:58:31,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states 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 07:58:31,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 07:58:31,093 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 07:58:31,094 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 125 flow. Second operand 3 states and 569 transitions.
[2023-11-19 07:58:31,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 51 transitions, 211 flow
[2023-11-19 07:58:31,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 51 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:58:31,097 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 122 flow
[2023-11-19 07:58:31,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=61, PETRI_TRANSITIONS=51}
[2023-11-19 07:58:31,100 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -20 predicate places.
[2023-11-19 07:58:31,100 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 122 flow
[2023-11-19 07:58:31,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:31,101 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:58:31,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:58:31,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-11-19 07:58:31,101 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] ===
[2023-11-19 07:58:31,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:58:31,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1879381818, now seen corresponding path program 1 times
[2023-11-19 07:58:31,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:58:31,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296292145]
[2023-11-19 07:58:31,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:58:31,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:58:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:58:31,297 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 07:58:31,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:58:31,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296292145]
[2023-11-19 07:58:31,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296292145] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:58:31,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:58:31,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:58:31,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140469780]
[2023-11-19 07:58:31,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:58:31,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:58:31,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:58:31,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:58:31,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:58:31,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 394
[2023-11-19 07:58:31,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states 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 07:58:31,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:58:31,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 394
[2023-11-19 07:58:31,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:58:33,967 INFO L124 PetriNetUnfolderBase]: 31366/36229 cut-off events.
[2023-11-19 07:58:33,968 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES.
[2023-11-19 07:58:34,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72505 conditions, 36229 events. 31366/36229 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 127688 event pairs, 14986 based on Foata normal form. 0/17773 useless extension candidates. Maximal degree in co-relation 72501. Up to 35901 conditions per place.
[2023-11-19 07:58:34,222 INFO L140 encePairwiseOnDemand]: 391/394 looper letters, 42 selfloop transitions, 1 changer transitions 0/49 dead transitions.
[2023-11-19 07:58:34,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 204 flow
[2023-11-19 07:58:34,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:58:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:58:34,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions.
[2023-11-19 07:58:34,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5
[2023-11-19 07:58:34,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions.
[2023-11-19 07:58:34,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions.
[2023-11-19 07:58:34,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:58:34,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions.
[2023-11-19 07:58:34,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states 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 07:58:34,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 07:58:34,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 394.0) internal successors, (1576), 4 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 07:58:34,234 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 122 flow. Second operand 3 states and 591 transitions.
[2023-11-19 07:58:34,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 204 flow
[2023-11-19 07:58:34,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:58:34,238 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 119 flow
[2023-11-19 07:58:34,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=394, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=60, PETRI_TRANSITIONS=49}
[2023-11-19 07:58:34,239 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -21 predicate places.
[2023-11-19 07:58:34,239 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 119 flow
[2023-11-19 07:58:34,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states 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 07:58:34,240 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:58:34,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:58:34,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2023-11-19 07:58:34,241 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] ===
[2023-11-19 07:58:34,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:58:34,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2095285681, now seen corresponding path program 1 times
[2023-11-19 07:58:34,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:58:34,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407386537]
[2023-11-19 07:58:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:58:34,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:58:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:58:34,332 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 07:58:34,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:58:34,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407386537]
[2023-11-19 07:58:34,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407386537] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:58:34,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:58:34,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:58:34,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391046619]
[2023-11-19 07:58:34,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:58:34,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:58:34,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:58:34,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:58:34,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:58:34,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 394
[2023-11-19 07:58:34,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states 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 07:58:34,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:58:34,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 394
[2023-11-19 07:58:34,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand