./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
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_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/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_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:59:59,739 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:59:59,859 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-19 07:59:59,867 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:59:59,868 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:59:59,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:59:59,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:59:59,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:59:59,916 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:59:59,922 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:59:59,922 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:59:59,923 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:59:59,923 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:59:59,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:59:59,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-11-19 07:59:59,926 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 07:59:59,926 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:59:59,927 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 07:59:59,927 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:59:59,928 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 07:59:59,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:59:59,929 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 07:59:59,929 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 07:59:59,929 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-11-19 07:59:59,930 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:59:59,931 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:59:59,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:59:59,931 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:59:59,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:59:59,932 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:59:59,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:59:59,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 07:59:59,934 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:59:59,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:59:59,934 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:59:59,935 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 07:59:59,935 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:59:59,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:59:59,935 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:59:59,936 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_64ddf067-5f69-4776-8cea-096c73bfbd8f/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489
[2023-11-19 08:00:00,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 08:00:00,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 08:00:00,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 08:00:00,324 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 08:00:00,324 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 08:00:00,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c
[2023-11-19 08:00:03,417 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 08:00:03,683 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 08:00:03,684 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c
[2023-11-19 08:00:03,694 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/data/4e7110806/690cd4ef865640c1a5fb879cdc26f2f2/FLAG769e2e126
[2023-11-19 08:00:03,711 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/data/4e7110806/690cd4ef865640c1a5fb879cdc26f2f2
[2023-11-19 08:00:03,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 08:00:03,720 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 08:00:03,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 08:00:03,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 08:00:03,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 08:00:03,733 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:03" (1/1) ...
[2023-11-19 08:00:03,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a296e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:03, skipping insertion in model container
[2023-11-19 08:00:03,734 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:03" (1/1) ...
[2023-11-19 08:00:03,765 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 08:00:04,007 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c[2664,2677]
[2023-11-19 08:00:04,012 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 08:00:04,026 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 08:00:04,064 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c[2664,2677]
[2023-11-19 08:00:04,065 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 08:00:04,083 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:04,084 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 08:00:04,092 INFO L206 MainTranslator]: Completed translation
[2023-11-19 08:00:04,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:04 WrapperNode
[2023-11-19 08:00:04,093 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 08:00:04,094 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 08:00:04,094 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 08:00:04,094 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 08:00:04,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:04" (1/1) ...
[2023-11-19 08:00:04,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:04" (1/1) ...
[2023-11-19 08:00:04,141 INFO L138 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 122
[2023-11-19 08:00:04,142 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 08:00:04,143 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 08:00:04,143 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 08:00:04,143 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 08:00:04,153 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:04" (1/1) ...
[2023-11-19 08:00:04,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:04" (1/1) ...
[2023-11-19 08:00:04,156 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:04" (1/1) ...
[2023-11-19 08:00:04,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:04" (1/1) ...
[2023-11-19 08:00:04,165 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:04" (1/1) ...
[2023-11-19 08:00:04,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:04" (1/1) ...
[2023-11-19 08:00:04,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:04" (1/1) ...
[2023-11-19 08:00:04,173 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:04" (1/1) ...
[2023-11-19 08:00:04,176 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 08:00:04,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 08:00:04,177 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 08:00:04,178 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 08:00:04,179 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:04" (1/1) ...
[2023-11-19 08:00:04,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 08:00:04,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:00:04,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 08:00:04,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 08:00:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 08:00:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2023-11-19 08:00:04,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2023-11-19 08:00:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2023-11-19 08:00:04,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2023-11-19 08:00:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread3
[2023-11-19 08:00:04,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3
[2023-11-19 08:00:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread4
[2023-11-19 08:00:04,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4
[2023-11-19 08:00:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 08:00:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 08:00:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-11-19 08:00:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2023-11-19 08:00:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2023-11-19 08:00:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 08:00:04,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 08:00:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-11-19 08:00:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 08:00:04,248 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 08:00:04,354 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 08:00:04,356 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 08:00:04,618 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 08:00:04,702 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 08:00:04,706 INFO L302 CfgBuilder]: Removed 4 assume(true) statements.
[2023-11-19 08:00:04,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:04 BoogieIcfgContainer
[2023-11-19 08:00:04,710 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 08:00:04,712 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 08:00:04,712 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 08:00:04,716 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 08:00:04,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:03" (1/3) ...
[2023-11-19 08:00:04,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9eb048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:04, skipping insertion in model container
[2023-11-19 08:00:04,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:04" (2/3) ...
[2023-11-19 08:00:04,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9eb048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:04, skipping insertion in model container
[2023-11-19 08:00:04,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:04" (3/3) ...
[2023-11-19 08:00:04,719 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c
[2023-11-19 08:00:04,729 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2023-11-19 08:00:04,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 08:00:04,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-19 08:00:04,742 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-11-19 08:00:04,843 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions.
[2023-11-19 08:00:04,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 139 transitions, 306 flow
[2023-11-19 08:00:04,976 INFO L124 PetriNetUnfolderBase]: 10/135 cut-off events.
[2023-11-19 08:00:04,979 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES.
[2023-11-19 08:00:04,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 135 events. 10/135 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place.
[2023-11-19 08:00:04,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 139 transitions, 306 flow
[2023-11-19 08:00:04,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 122 transitions, 268 flow
[2023-11-19 08:00:05,003 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 08:00:05,013 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 122 transitions, 268 flow
[2023-11-19 08:00:05,016 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 122 transitions, 268 flow
[2023-11-19 08:00:05,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 122 transitions, 268 flow
[2023-11-19 08:00:05,089 INFO L124 PetriNetUnfolderBase]: 10/122 cut-off events.
[2023-11-19 08:00:05,090 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES.
[2023-11-19 08:00:05,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 122 events. 10/122 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place.
[2023-11-19 08:00:05,095 INFO L119 LiptonReduction]: Number of co-enabled transitions 3312
[2023-11-19 08:00:09,013 INFO L134 LiptonReduction]: Checked pairs total: 3272
[2023-11-19 08:00:09,014 INFO L136 LiptonReduction]: Total number of compositions: 103
[2023-11-19 08:00:09,038 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 08:00:09,048 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@76b216a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 08:00:09,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2023-11-19 08:00:09,075 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 08:00:09,079 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events.
[2023-11-19 08:00:09,079 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES.
[2023-11-19 08:00:09,079 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:09,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:09,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:09,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:09,089 INFO L85 PathProgramCache]: Analyzing trace with hash -527290099, now seen corresponding path program 1 times
[2023-11-19 08:00:09,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:09,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107186557]
[2023-11-19 08:00:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:09,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:09,685 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 08:00:09,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:09,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107186557]
[2023-11-19 08:00:09,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107186557] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:09,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:09,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 08:00:09,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142690775]
[2023-11-19 08:00:09,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:09,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 08:00:09,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:09,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 08:00:09,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 08:00:09,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 242
[2023-11-19 08:00:09,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 08:00:09,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:09,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 242
[2023-11-19 08:00:09,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:10,204 INFO L124 PetriNetUnfolderBase]: 1680/2288 cut-off events.
[2023-11-19 08:00:10,205 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES.
[2023-11-19 08:00:10,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4806 conditions, 2288 events. 1680/2288 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8188 event pairs, 624 based on Foata normal form. 1/1777 useless extension candidates. Maximal degree in co-relation 3668. Up to 1345 conditions per place.
[2023-11-19 08:00:10,234 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 47 selfloop transitions, 3 changer transitions 3/53 dead transitions.
[2023-11-19 08:00:10,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 257 flow
[2023-11-19 08:00:10,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 08:00:10,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 08:00:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 413 transitions.
[2023-11-19 08:00:10,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.568870523415978
[2023-11-19 08:00:10,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 413 transitions.
[2023-11-19 08:00:10,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 413 transitions.
[2023-11-19 08:00:10,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:10,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 413 transitions.
[2023-11-19 08:00:10,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states 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 08:00:10,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 08:00:10,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 08:00:10,279 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 82 flow. Second operand 3 states and 413 transitions.
[2023-11-19 08:00:10,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 257 flow
[2023-11-19 08:00:10,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 53 transitions, 227 flow, removed 0 selfloop flow, removed 8 redundant places.
[2023-11-19 08:00:10,292 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 89 flow
[2023-11-19 08:00:10,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=33, PETRI_TRANSITIONS=31}
[2023-11-19 08:00:10,300 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places.
[2023-11-19 08:00:10,300 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 89 flow
[2023-11-19 08:00:10,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 08:00:10,301 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:10,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:10,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 08:00:10,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:10,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash -114306080, now seen corresponding path program 1 times
[2023-11-19 08:00:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:10,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345028977]
[2023-11-19 08:00:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:10,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:10,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:10,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345028977]
[2023-11-19 08:00:10,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345028977] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:10,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:10,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-19 08:00:10,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217362261]
[2023-11-19 08:00:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:10,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-19 08:00:10,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:10,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-19 08:00:10,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-19 08:00:10,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 242
[2023-11-19 08:00:10,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 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 08:00:10,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:10,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 242
[2023-11-19 08:00:10,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:11,242 INFO L124 PetriNetUnfolderBase]: 2083/2891 cut-off events.
[2023-11-19 08:00:11,243 INFO L125 PetriNetUnfolderBase]: For 566/566 co-relation queries the response was YES.
[2023-11-19 08:00:11,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6568 conditions, 2891 events. 2083/2891 cut-off events. For 566/566 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 11575 event pairs, 710 based on Foata normal form. 202/3093 useless extension candidates. Maximal degree in co-relation 2218. Up to 1464 conditions per place.
[2023-11-19 08:00:11,263 INFO L140 encePairwiseOnDemand]: 234/242 looper letters, 62 selfloop transitions, 4 changer transitions 17/83 dead transitions.
[2023-11-19 08:00:11,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 83 transitions, 385 flow
[2023-11-19 08:00:11,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-19 08:00:11,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-11-19 08:00:11,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 629 transitions.
[2023-11-19 08:00:11,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5198347107438016
[2023-11-19 08:00:11,270 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 629 transitions.
[2023-11-19 08:00:11,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 629 transitions.
[2023-11-19 08:00:11,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:11,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 629 transitions.
[2023-11-19 08:00:11,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states 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 08:00:11,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 08:00:11,281 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 08:00:11,282 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 89 flow. Second operand 5 states and 629 transitions.
[2023-11-19 08:00:11,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 83 transitions, 385 flow
[2023-11-19 08:00:11,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 83 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 08:00:11,293 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 123 flow
[2023-11-19 08:00:11,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=39, PETRI_TRANSITIONS=33}
[2023-11-19 08:00:11,294 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places.
[2023-11-19 08:00:11,295 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 123 flow
[2023-11-19 08:00:11,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 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 08:00:11,295 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:11,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:11,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 08:00:11,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:11,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:11,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1541703220, now seen corresponding path program 2 times
[2023-11-19 08:00:11,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:11,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421305239]
[2023-11-19 08:00:11,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:11,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:11,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:11,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:11,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421305239]
[2023-11-19 08:00:11,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421305239] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:11,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:11,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 08:00:11,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697718104]
[2023-11-19 08:00:11,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:11,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:00:11,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:11,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:00:11,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:00:11,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 242
[2023-11-19 08:00:11,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:11,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:11,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 242
[2023-11-19 08:00:11,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:12,134 INFO L124 PetriNetUnfolderBase]: 2610/3676 cut-off events.
[2023-11-19 08:00:12,135 INFO L125 PetriNetUnfolderBase]: For 4132/4132 co-relation queries the response was YES.
[2023-11-19 08:00:12,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10248 conditions, 3676 events. 2610/3676 cut-off events. For 4132/4132 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15663 event pairs, 940 based on Foata normal form. 162/3838 useless extension candidates. Maximal degree in co-relation 4472. Up to 1920 conditions per place.
[2023-11-19 08:00:12,167 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 72 selfloop transitions, 3 changer transitions 0/75 dead transitions.
[2023-11-19 08:00:12,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 75 transitions, 426 flow
[2023-11-19 08:00:12,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 08:00:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 08:00:12,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 517 transitions.
[2023-11-19 08:00:12,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091
[2023-11-19 08:00:12,171 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 517 transitions.
[2023-11-19 08:00:12,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 517 transitions.
[2023-11-19 08:00:12,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:12,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 517 transitions.
[2023-11-19 08:00:12,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:12,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:12,177 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:12,177 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 123 flow. Second operand 4 states and 517 transitions.
[2023-11-19 08:00:12,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 75 transitions, 426 flow
[2023-11-19 08:00:12,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 75 transitions, 401 flow, removed 9 selfloop flow, removed 2 redundant places.
[2023-11-19 08:00:12,184 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 146 flow
[2023-11-19 08:00:12,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=41, PETRI_TRANSITIONS=35}
[2023-11-19 08:00:12,186 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places.
[2023-11-19 08:00:12,186 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 146 flow
[2023-11-19 08:00:12,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:12,187 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:12,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:12,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-19 08:00:12,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:12,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:12,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1973834413, now seen corresponding path program 1 times
[2023-11-19 08:00:12,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:12,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855348771]
[2023-11-19 08:00:12,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:12,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:12,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:12,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855348771]
[2023-11-19 08:00:12,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855348771] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:12,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:12,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 08:00:12,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384452891]
[2023-11-19 08:00:12,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:12,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:00:12,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:12,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:00:12,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:00:12,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 242
[2023-11-19 08:00:12,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:12,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:12,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 242
[2023-11-19 08:00:12,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:12,974 INFO L124 PetriNetUnfolderBase]: 2950/4138 cut-off events.
[2023-11-19 08:00:12,974 INFO L125 PetriNetUnfolderBase]: For 5226/5226 co-relation queries the response was YES.
[2023-11-19 08:00:12,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12913 conditions, 4138 events. 2950/4138 cut-off events. For 5226/5226 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17809 event pairs, 894 based on Foata normal form. 122/4260 useless extension candidates. Maximal degree in co-relation 3695. Up to 2752 conditions per place.
[2023-11-19 08:00:13,007 INFO L140 encePairwiseOnDemand]: 238/242 looper letters, 61 selfloop transitions, 4 changer transitions 10/75 dead transitions.
[2023-11-19 08:00:13,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 75 transitions, 443 flow
[2023-11-19 08:00:13,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 08:00:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 08:00:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 518 transitions.
[2023-11-19 08:00:13,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351239669421488
[2023-11-19 08:00:13,010 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 518 transitions.
[2023-11-19 08:00:13,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 518 transitions.
[2023-11-19 08:00:13,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:13,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 518 transitions.
[2023-11-19 08:00:13,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 08:00:13,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:13,016 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:13,016 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 146 flow. Second operand 4 states and 518 transitions.
[2023-11-19 08:00:13,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 75 transitions, 443 flow
[2023-11-19 08:00:13,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 75 transitions, 434 flow, removed 2 selfloop flow, removed 1 redundant places.
[2023-11-19 08:00:13,021 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 174 flow
[2023-11-19 08:00:13,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=45, PETRI_TRANSITIONS=37}
[2023-11-19 08:00:13,022 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places.
[2023-11-19 08:00:13,023 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 174 flow
[2023-11-19 08:00:13,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:13,023 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:13,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:13,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-19 08:00:13,024 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:13,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:13,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1930217321, now seen corresponding path program 2 times
[2023-11-19 08:00:13,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:13,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542977978]
[2023-11-19 08:00:13,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:13,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:13,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:13,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:13,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542977978]
[2023-11-19 08:00:13,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542977978] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:13,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:13,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-19 08:00:13,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482922579]
[2023-11-19 08:00:13,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:13,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-19 08:00:13,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:13,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-19 08:00:13,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-19 08:00:13,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 242
[2023-11-19 08:00:13,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 08:00:13,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:13,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 242
[2023-11-19 08:00:13,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:13,852 INFO L124 PetriNetUnfolderBase]: 3092/4328 cut-off events.
[2023-11-19 08:00:13,852 INFO L125 PetriNetUnfolderBase]: For 9045/9045 co-relation queries the response was YES.
[2023-11-19 08:00:13,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14437 conditions, 4328 events. 3092/4328 cut-off events. For 9045/9045 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 18254 event pairs, 1835 based on Foata normal form. 16/4344 useless extension candidates. Maximal degree in co-relation 6276. Up to 3580 conditions per place.
[2023-11-19 08:00:13,897 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 57 selfloop transitions, 7 changer transitions 11/75 dead transitions.
[2023-11-19 08:00:13,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 490 flow
[2023-11-19 08:00:13,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-19 08:00:13,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-11-19 08:00:13,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 607 transitions.
[2023-11-19 08:00:13,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016528925619834
[2023-11-19 08:00:13,901 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 607 transitions.
[2023-11-19 08:00:13,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 607 transitions.
[2023-11-19 08:00:13,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:13,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 607 transitions.
[2023-11-19 08:00:13,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.4) internal successors, (607), 5 states have internal predecessors, (607), 0 states have call successors, (0), 0 states 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 08:00:13,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 08:00:13,909 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 08:00:13,909 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 174 flow. Second operand 5 states and 607 transitions.
[2023-11-19 08:00:13,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 490 flow
[2023-11-19 08:00:13,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 75 transitions, 483 flow, removed 1 selfloop flow, removed 1 redundant places.
[2023-11-19 08:00:13,921 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 223 flow
[2023-11-19 08:00:13,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=50, PETRI_TRANSITIONS=40}
[2023-11-19 08:00:13,924 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places.
[2023-11-19 08:00:13,925 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 223 flow
[2023-11-19 08:00:13,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 08:00:13,925 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:13,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:13,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-19 08:00:13,926 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:13,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:13,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1822124311, now seen corresponding path program 3 times
[2023-11-19 08:00:13,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:13,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469822281]
[2023-11-19 08:00:13,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:13,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:14,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:14,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:14,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469822281]
[2023-11-19 08:00:14,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469822281] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:14,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:14,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 08:00:14,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056304269]
[2023-11-19 08:00:14,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:14,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:00:14,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:14,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:00:14,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:00:14,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 242
[2023-11-19 08:00:14,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:14,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:14,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 242
[2023-11-19 08:00:14,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:14,837 INFO L124 PetriNetUnfolderBase]: 3445/4809 cut-off events.
[2023-11-19 08:00:14,837 INFO L125 PetriNetUnfolderBase]: For 12587/12587 co-relation queries the response was YES.
[2023-11-19 08:00:14,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17490 conditions, 4809 events. 3445/4809 cut-off events. For 12587/12587 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 20863 event pairs, 1685 based on Foata normal form. 152/4961 useless extension candidates. Maximal degree in co-relation 8546. Up to 3328 conditions per place.
[2023-11-19 08:00:14,876 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 71 selfloop transitions, 13 changer transitions 1/85 dead transitions.
[2023-11-19 08:00:14,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 85 transitions, 665 flow
[2023-11-19 08:00:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 08:00:14,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 08:00:14,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 513 transitions.
[2023-11-19 08:00:14,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299586776859504
[2023-11-19 08:00:14,880 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 513 transitions.
[2023-11-19 08:00:14,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 513 transitions.
[2023-11-19 08:00:14,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:14,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 513 transitions.
[2023-11-19 08:00:14,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 08:00:14,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:14,886 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:14,887 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 223 flow. Second operand 4 states and 513 transitions.
[2023-11-19 08:00:14,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 85 transitions, 665 flow
[2023-11-19 08:00:14,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 85 transitions, 631 flow, removed 4 selfloop flow, removed 2 redundant places.
[2023-11-19 08:00:14,910 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 354 flow
[2023-11-19 08:00:14,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=354, PETRI_PLACES=51, PETRI_TRANSITIONS=50}
[2023-11-19 08:00:14,913 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places.
[2023-11-19 08:00:14,913 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 354 flow
[2023-11-19 08:00:14,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:14,914 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:14,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:14,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-19 08:00:14,915 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:14,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:14,916 INFO L85 PathProgramCache]: Analyzing trace with hash 788699484, now seen corresponding path program 3 times
[2023-11-19 08:00:14,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:14,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619018844]
[2023-11-19 08:00:14,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:14,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:15,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:15,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619018844]
[2023-11-19 08:00:15,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619018844] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:15,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:15,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 08:00:15,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465338601]
[2023-11-19 08:00:15,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:15,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:00:15,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:15,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:00:15,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:00:15,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 242
[2023-11-19 08:00:15,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:15,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:15,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 242
[2023-11-19 08:00:15,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:15,933 INFO L124 PetriNetUnfolderBase]: 3741/5201 cut-off events.
[2023-11-19 08:00:15,934 INFO L125 PetriNetUnfolderBase]: For 18058/18058 co-relation queries the response was YES.
[2023-11-19 08:00:15,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20941 conditions, 5201 events. 3741/5201 cut-off events. For 18058/18058 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 22594 event pairs, 2003 based on Foata normal form. 96/5297 useless extension candidates. Maximal degree in co-relation 9618. Up to 4138 conditions per place.
[2023-11-19 08:00:15,968 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 68 selfloop transitions, 21 changer transitions 1/90 dead transitions.
[2023-11-19 08:00:15,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 90 transitions, 808 flow
[2023-11-19 08:00:15,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 08:00:15,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 08:00:15,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 508 transitions.
[2023-11-19 08:00:15,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247933884297521
[2023-11-19 08:00:15,972 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 508 transitions.
[2023-11-19 08:00:15,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 508 transitions.
[2023-11-19 08:00:15,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:15,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 508 transitions.
[2023-11-19 08:00:15,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 08:00:15,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:15,978 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:15,978 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 354 flow. Second operand 4 states and 508 transitions.
[2023-11-19 08:00:15,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 90 transitions, 808 flow
[2023-11-19 08:00:15,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 90 transitions, 754 flow, removed 15 selfloop flow, removed 2 redundant places.
[2023-11-19 08:00:16,002 INFO L231 Difference]: Finished difference. Result has 53 places, 61 transitions, 514 flow
[2023-11-19 08:00:16,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=514, PETRI_PLACES=53, PETRI_TRANSITIONS=61}
[2023-11-19 08:00:16,003 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places.
[2023-11-19 08:00:16,003 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 514 flow
[2023-11-19 08:00:16,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:16,004 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:16,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:16,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-19 08:00:16,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:16,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:16,005 INFO L85 PathProgramCache]: Analyzing trace with hash 605445178, now seen corresponding path program 4 times
[2023-11-19 08:00:16,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:16,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474266958]
[2023-11-19 08:00:16,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:16,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:16,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:16,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474266958]
[2023-11-19 08:00:16,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474266958] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:16,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:16,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 08:00:16,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701207134]
[2023-11-19 08:00:16,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:16,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:00:16,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:16,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:00:16,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:00:16,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 242
[2023-11-19 08:00:16,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 514 flow. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:16,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:16,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 242
[2023-11-19 08:00:16,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:16,902 INFO L124 PetriNetUnfolderBase]: 3677/5025 cut-off events.
[2023-11-19 08:00:16,902 INFO L125 PetriNetUnfolderBase]: For 17378/17378 co-relation queries the response was YES.
[2023-11-19 08:00:16,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21758 conditions, 5025 events. 3677/5025 cut-off events. For 17378/17378 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 21605 event pairs, 1031 based on Foata normal form. 96/5121 useless extension candidates. Maximal degree in co-relation 9766. Up to 3366 conditions per place.
[2023-11-19 08:00:16,939 INFO L140 encePairwiseOnDemand]: 238/242 looper letters, 74 selfloop transitions, 15 changer transitions 10/99 dead transitions.
[2023-11-19 08:00:16,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 99 transitions, 908 flow
[2023-11-19 08:00:16,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 08:00:16,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 08:00:16,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 514 transitions.
[2023-11-19 08:00:16,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53099173553719
[2023-11-19 08:00:16,943 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 514 transitions.
[2023-11-19 08:00:16,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 514 transitions.
[2023-11-19 08:00:16,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:16,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 514 transitions.
[2023-11-19 08:00:16,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.5) internal successors, (514), 4 states have internal predecessors, (514), 0 states have call successors, (0), 0 states 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 08:00:16,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:16,948 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:16,949 INFO L175 Difference]: Start difference. First operand has 53 places, 61 transitions, 514 flow. Second operand 4 states and 514 transitions.
[2023-11-19 08:00:16,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 99 transitions, 908 flow
[2023-11-19 08:00:16,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 99 transitions, 895 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 08:00:16,971 INFO L231 Difference]: Finished difference. Result has 57 places, 63 transitions, 577 flow
[2023-11-19 08:00:16,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=577, PETRI_PLACES=57, PETRI_TRANSITIONS=63}
[2023-11-19 08:00:16,975 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places.
[2023-11-19 08:00:16,975 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 63 transitions, 577 flow
[2023-11-19 08:00:16,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:16,976 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:16,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:16,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-11-19 08:00:16,976 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:16,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:16,977 INFO L85 PathProgramCache]: Analyzing trace with hash 364262899, now seen corresponding path program 4 times
[2023-11-19 08:00:16,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:16,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209407046]
[2023-11-19 08:00:16,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:16,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:17,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:17,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209407046]
[2023-11-19 08:00:17,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209407046] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:17,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:17,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-19 08:00:17,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399004008]
[2023-11-19 08:00:17,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:17,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-19 08:00:17,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:17,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-19 08:00:17,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-19 08:00:17,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 242
[2023-11-19 08:00:17,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 63 transitions, 577 flow. Second operand has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 08:00:17,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:17,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 242
[2023-11-19 08:00:17,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:18,180 INFO L124 PetriNetUnfolderBase]: 3975/5332 cut-off events.
[2023-11-19 08:00:18,181 INFO L125 PetriNetUnfolderBase]: For 25938/25938 co-relation queries the response was YES.
[2023-11-19 08:00:18,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23920 conditions, 5332 events. 3975/5332 cut-off events. For 25938/25938 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 21653 event pairs, 1555 based on Foata normal form. 16/5348 useless extension candidates. Maximal degree in co-relation 18644. Up to 4009 conditions per place.
[2023-11-19 08:00:18,226 INFO L140 encePairwiseOnDemand]: 237/242 looper letters, 78 selfloop transitions, 17 changer transitions 9/104 dead transitions.
[2023-11-19 08:00:18,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 104 transitions, 1020 flow
[2023-11-19 08:00:18,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-19 08:00:18,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-11-19 08:00:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 605 transitions.
[2023-11-19 08:00:18,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5
[2023-11-19 08:00:18,231 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 605 transitions.
[2023-11-19 08:00:18,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 605 transitions.
[2023-11-19 08:00:18,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:18,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 605 transitions.
[2023-11-19 08:00:18,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.0) internal successors, (605), 5 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 08:00:18,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 08:00:18,240 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states 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 08:00:18,240 INFO L175 Difference]: Start difference. First operand has 57 places, 63 transitions, 577 flow. Second operand 5 states and 605 transitions.
[2023-11-19 08:00:18,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 104 transitions, 1020 flow
[2023-11-19 08:00:18,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 104 transitions, 1006 flow, removed 1 selfloop flow, removed 1 redundant places.
[2023-11-19 08:00:18,273 INFO L231 Difference]: Finished difference. Result has 62 places, 69 transitions, 708 flow
[2023-11-19 08:00:18,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=708, PETRI_PLACES=62, PETRI_TRANSITIONS=69}
[2023-11-19 08:00:18,275 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places.
[2023-11-19 08:00:18,275 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 69 transitions, 708 flow
[2023-11-19 08:00:18,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 08:00:18,276 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:18,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:18,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2023-11-19 08:00:18,277 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:18,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:18,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1060337343, now seen corresponding path program 5 times
[2023-11-19 08:00:18,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:18,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558618519]
[2023-11-19 08:00:18,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:18,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:18,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:18,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558618519]
[2023-11-19 08:00:18,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558618519] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:18,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:18,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 08:00:18,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683095366]
[2023-11-19 08:00:18,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:18,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:00:18,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:18,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:00:18,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:00:18,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 242
[2023-11-19 08:00:18,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 69 transitions, 708 flow. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:18,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:18,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 242
[2023-11-19 08:00:18,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:19,226 INFO L124 PetriNetUnfolderBase]: 4082/5575 cut-off events.
[2023-11-19 08:00:19,227 INFO L125 PetriNetUnfolderBase]: For 33245/33245 co-relation queries the response was YES.
[2023-11-19 08:00:19,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26558 conditions, 5575 events. 4082/5575 cut-off events. For 33245/33245 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 23908 event pairs, 1597 based on Foata normal form. 156/5731 useless extension candidates. Maximal degree in co-relation 21047. Up to 3715 conditions per place.
[2023-11-19 08:00:19,276 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 92 selfloop transitions, 14 changer transitions 1/107 dead transitions.
[2023-11-19 08:00:19,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 107 transitions, 1094 flow
[2023-11-19 08:00:19,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 08:00:19,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 08:00:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 515 transitions.
[2023-11-19 08:00:19,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5320247933884298
[2023-11-19 08:00:19,279 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 515 transitions.
[2023-11-19 08:00:19,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 515 transitions.
[2023-11-19 08:00:19,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:19,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 515 transitions.
[2023-11-19 08:00:19,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states 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 08:00:19,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:19,285 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:19,285 INFO L175 Difference]: Start difference. First operand has 62 places, 69 transitions, 708 flow. Second operand 4 states and 515 transitions.
[2023-11-19 08:00:19,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 107 transitions, 1094 flow
[2023-11-19 08:00:19,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 107 transitions, 1056 flow, removed 12 selfloop flow, removed 2 redundant places.
[2023-11-19 08:00:19,344 INFO L231 Difference]: Finished difference. Result has 63 places, 69 transitions, 717 flow
[2023-11-19 08:00:19,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=717, PETRI_PLACES=63, PETRI_TRANSITIONS=69}
[2023-11-19 08:00:19,345 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places.
[2023-11-19 08:00:19,345 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 69 transitions, 717 flow
[2023-11-19 08:00:19,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:19,346 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:19,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:19,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2023-11-19 08:00:19,347 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:19,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:19,347 INFO L85 PathProgramCache]: Analyzing trace with hash 540527041, now seen corresponding path program 6 times
[2023-11-19 08:00:19,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:19,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387587524]
[2023-11-19 08:00:19,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:19,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:19,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:19,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:19,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387587524]
[2023-11-19 08:00:19,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387587524] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:19,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:19,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 08:00:19,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443229140]
[2023-11-19 08:00:19,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:19,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:00:19,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:19,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:00:19,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:00:19,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 242
[2023-11-19 08:00:19,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 69 transitions, 717 flow. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:19,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:19,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 242
[2023-11-19 08:00:19,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:20,472 INFO L124 PetriNetUnfolderBase]: 5628/7817 cut-off events.
[2023-11-19 08:00:20,472 INFO L125 PetriNetUnfolderBase]: For 61203/61203 co-relation queries the response was YES.
[2023-11-19 08:00:20,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37704 conditions, 7817 events. 5628/7817 cut-off events. For 61203/61203 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 36670 event pairs, 2212 based on Foata normal form. 408/8225 useless extension candidates. Maximal degree in co-relation 30041. Up to 5172 conditions per place.
[2023-11-19 08:00:20,533 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 136 selfloop transitions, 6 changer transitions 6/148 dead transitions.
[2023-11-19 08:00:20,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 148 transitions, 1837 flow
[2023-11-19 08:00:20,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 08:00:20,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 08:00:20,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 513 transitions.
[2023-11-19 08:00:20,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299586776859504
[2023-11-19 08:00:20,536 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 513 transitions.
[2023-11-19 08:00:20,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 513 transitions.
[2023-11-19 08:00:20,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:20,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 513 transitions.
[2023-11-19 08:00:20,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 08:00:20,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:20,542 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:20,542 INFO L175 Difference]: Start difference. First operand has 63 places, 69 transitions, 717 flow. Second operand 4 states and 513 transitions.
[2023-11-19 08:00:20,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 148 transitions, 1837 flow
[2023-11-19 08:00:20,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 148 transitions, 1770 flow, removed 3 selfloop flow, removed 2 redundant places.
[2023-11-19 08:00:20,604 INFO L231 Difference]: Finished difference. Result has 66 places, 74 transitions, 839 flow
[2023-11-19 08:00:20,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=839, PETRI_PLACES=66, PETRI_TRANSITIONS=74}
[2023-11-19 08:00:20,604 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 28 predicate places.
[2023-11-19 08:00:20,605 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 74 transitions, 839 flow
[2023-11-19 08:00:20,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:20,605 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:20,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:20,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2023-11-19 08:00:20,606 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:20,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:20,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1304390355, now seen corresponding path program 7 times
[2023-11-19 08:00:20,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:20,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69327850]
[2023-11-19 08:00:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:20,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:20,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:20,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69327850]
[2023-11-19 08:00:20,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69327850] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 08:00:20,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 08:00:20,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 08:00:20,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199224542]
[2023-11-19 08:00:20,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:20,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:00:20,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:20,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:00:20,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-11-19 08:00:20,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 242
[2023-11-19 08:00:20,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 74 transitions, 839 flow. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:20,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:20,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 242
[2023-11-19 08:00:20,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:21,793 INFO L124 PetriNetUnfolderBase]: 5798/7899 cut-off events.
[2023-11-19 08:00:21,793 INFO L125 PetriNetUnfolderBase]: For 55485/55485 co-relation queries the response was YES.
[2023-11-19 08:00:21,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43330 conditions, 7899 events. 5798/7899 cut-off events. For 55485/55485 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 35825 event pairs, 1726 based on Foata normal form. 304/8203 useless extension candidates. Maximal degree in co-relation 34045. Up to 5244 conditions per place.
[2023-11-19 08:00:21,866 INFO L140 encePairwiseOnDemand]: 237/242 looper letters, 92 selfloop transitions, 17 changer transitions 5/114 dead transitions.
[2023-11-19 08:00:21,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 114 transitions, 1400 flow
[2023-11-19 08:00:21,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 08:00:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 08:00:21,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 511 transitions.
[2023-11-19 08:00:21,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5278925619834711
[2023-11-19 08:00:21,870 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 511 transitions.
[2023-11-19 08:00:21,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 511 transitions.
[2023-11-19 08:00:21,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:21,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 511 transitions.
[2023-11-19 08:00:21,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 0 states have call successors, (0), 0 states 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 08:00:21,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:21,876 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:21,876 INFO L175 Difference]: Start difference. First operand has 66 places, 74 transitions, 839 flow. Second operand 4 states and 511 transitions.
[2023-11-19 08:00:21,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 114 transitions, 1400 flow
[2023-11-19 08:00:21,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 114 transitions, 1331 flow, removed 30 selfloop flow, removed 1 redundant places.
[2023-11-19 08:00:21,948 INFO L231 Difference]: Finished difference. Result has 70 places, 76 transitions, 885 flow
[2023-11-19 08:00:21,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=885, PETRI_PLACES=70, PETRI_TRANSITIONS=76}
[2023-11-19 08:00:21,949 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places.
[2023-11-19 08:00:21,949 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 76 transitions, 885 flow
[2023-11-19 08:00:21,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:21,949 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:21,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:21,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2023-11-19 08:00:21,950 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:21,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:21,951 INFO L85 PathProgramCache]: Analyzing trace with hash -949528942, now seen corresponding path program 1 times
[2023-11-19 08:00:21,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:21,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469011793]
[2023-11-19 08:00:21,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:21,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 08:00:22,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:22,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469011793]
[2023-11-19 08:00:22,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469011793] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 08:00:22,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309138653]
[2023-11-19 08:00:22,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:22,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:00:22,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:00:22,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 08:00:22,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-19 08:00:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:22,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-19 08:00:22,292 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:00:22,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 08:00:22,461 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 08:00:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 08:00:22,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309138653] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 08:00:22,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 08:00:22,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7
[2023-11-19 08:00:22,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975049736]
[2023-11-19 08:00:22,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 08:00:22,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-19 08:00:22,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:22,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-19 08:00:22,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-19 08:00:22,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 242
[2023-11-19 08:00:22,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 76 transitions, 885 flow. Second operand has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states 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 08:00:22,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:22,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 242
[2023-11-19 08:00:22,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:24,376 INFO L124 PetriNetUnfolderBase]: 7249/9860 cut-off events.
[2023-11-19 08:00:24,377 INFO L125 PetriNetUnfolderBase]: For 76396/76396 co-relation queries the response was YES.
[2023-11-19 08:00:24,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54003 conditions, 9860 events. 7249/9860 cut-off events. For 76396/76396 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 46125 event pairs, 2563 based on Foata normal form. 214/10074 useless extension candidates. Maximal degree in co-relation 44996. Up to 5955 conditions per place.
[2023-11-19 08:00:24,464 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 160 selfloop transitions, 34 changer transitions 7/201 dead transitions.
[2023-11-19 08:00:24,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 201 transitions, 2364 flow
[2023-11-19 08:00:24,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2023-11-19 08:00:24,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2023-11-19 08:00:24,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 979 transitions.
[2023-11-19 08:00:24,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056818181818182
[2023-11-19 08:00:24,469 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 979 transitions.
[2023-11-19 08:00:24,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 979 transitions.
[2023-11-19 08:00:24,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:24,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 979 transitions.
[2023-11-19 08:00:24,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 122.375) internal successors, (979), 8 states have internal predecessors, (979), 0 states have call successors, (0), 0 states 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 08:00:24,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 242.0) internal successors, (2178), 9 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states 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 08:00:24,479 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 242.0) internal successors, (2178), 9 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states 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 08:00:24,479 INFO L175 Difference]: Start difference. First operand has 70 places, 76 transitions, 885 flow. Second operand 8 states and 979 transitions.
[2023-11-19 08:00:24,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 201 transitions, 2364 flow
[2023-11-19 08:00:24,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 201 transitions, 2340 flow, removed 6 selfloop flow, removed 2 redundant places.
[2023-11-19 08:00:24,567 INFO L231 Difference]: Finished difference. Result has 77 places, 88 transitions, 1117 flow
[2023-11-19 08:00:24,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1117, PETRI_PLACES=77, PETRI_TRANSITIONS=88}
[2023-11-19 08:00:24,568 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 39 predicate places.
[2023-11-19 08:00:24,568 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 88 transitions, 1117 flow
[2023-11-19 08:00:24,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states 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 08:00:24,569 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:24,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:24,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-19 08:00:24,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-11-19 08:00:24,786 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:24,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:24,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2010425236, now seen corresponding path program 2 times
[2023-11-19 08:00:24,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:24,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107766833]
[2023-11-19 08:00:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:24,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 08:00:24,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:24,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107766833]
[2023-11-19 08:00:24,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107766833] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 08:00:24,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696531850]
[2023-11-19 08:00:24,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-19 08:00:24,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:00:24,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:00:24,946 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 08:00:24,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-19 08:00:25,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-11-19 08:00:25,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 08:00:25,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-19 08:00:25,089 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:00:25,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 08:00:25,192 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 08:00:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 08:00:25,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696531850] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 08:00:25,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 08:00:25,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9
[2023-11-19 08:00:25,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771565628]
[2023-11-19 08:00:25,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 08:00:25,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-11-19 08:00:25,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:25,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-11-19 08:00:25,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72
[2023-11-19 08:00:25,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 242
[2023-11-19 08:00:25,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 88 transitions, 1117 flow. Second operand has 9 states, 9 states have (on average 110.11111111111111) internal successors, (991), 9 states have internal predecessors, (991), 0 states have call successors, (0), 0 states 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 08:00:25,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:25,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 242
[2023-11-19 08:00:25,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:26,909 INFO L124 PetriNetUnfolderBase]: 7375/9938 cut-off events.
[2023-11-19 08:00:26,909 INFO L125 PetriNetUnfolderBase]: For 89649/89649 co-relation queries the response was YES.
[2023-11-19 08:00:26,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59633 conditions, 9938 events. 7375/9938 cut-off events. For 89649/89649 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 45927 event pairs, 1477 based on Foata normal form. 214/10152 useless extension candidates. Maximal degree in co-relation 52686. Up to 4499 conditions per place.
[2023-11-19 08:00:26,992 INFO L140 encePairwiseOnDemand]: 234/242 looper letters, 135 selfloop transitions, 70 changer transitions 7/212 dead transitions.
[2023-11-19 08:00:26,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 212 transitions, 2620 flow
[2023-11-19 08:00:26,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2023-11-19 08:00:26,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2023-11-19 08:00:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1066 transitions.
[2023-11-19 08:00:26,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48943985307621674
[2023-11-19 08:00:26,997 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1066 transitions.
[2023-11-19 08:00:26,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1066 transitions.
[2023-11-19 08:00:26,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:26,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1066 transitions.
[2023-11-19 08:00:27,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states 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 08:00:27,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 242.0) internal successors, (2420), 10 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states 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 08:00:27,008 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 242.0) internal successors, (2420), 10 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states 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 08:00:27,008 INFO L175 Difference]: Start difference. First operand has 77 places, 88 transitions, 1117 flow. Second operand 9 states and 1066 transitions.
[2023-11-19 08:00:27,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 212 transitions, 2620 flow
[2023-11-19 08:00:27,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 212 transitions, 2440 flow, removed 61 selfloop flow, removed 5 redundant places.
[2023-11-19 08:00:27,160 INFO L231 Difference]: Finished difference. Result has 81 places, 123 transitions, 1691 flow
[2023-11-19 08:00:27,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1691, PETRI_PLACES=81, PETRI_TRANSITIONS=123}
[2023-11-19 08:00:27,161 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 43 predicate places.
[2023-11-19 08:00:27,162 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 123 transitions, 1691 flow
[2023-11-19 08:00:27,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.11111111111111) internal successors, (991), 9 states have internal predecessors, (991), 0 states have call successors, (0), 0 states 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 08:00:27,162 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:27,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:27,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-11-19 08:00:27,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:00:27,368 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:27,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:27,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1005377771, now seen corresponding path program 1 times
[2023-11-19 08:00:27,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:27,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436634782]
[2023-11-19 08:00:27,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:27,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-19 08:00:27,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:27,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436634782]
[2023-11-19 08:00:27,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436634782] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 08:00:27,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770792181]
[2023-11-19 08:00:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:27,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:00:27,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:00:27,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 08:00:27,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-19 08:00:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:27,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-19 08:00:27,666 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:00:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-19 08:00:27,720 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 08:00:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-19 08:00:27,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770792181] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-19 08:00:27,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-19 08:00:27,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6
[2023-11-19 08:00:27,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879499857]
[2023-11-19 08:00:27,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 08:00:27,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 08:00:27,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:27,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 08:00:27,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-11-19 08:00:27,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 242
[2023-11-19 08:00:27,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 123 transitions, 1691 flow. Second operand has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:27,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:27,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 242
[2023-11-19 08:00:27,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:29,378 INFO L124 PetriNetUnfolderBase]: 8721/11698 cut-off events.
[2023-11-19 08:00:29,379 INFO L125 PetriNetUnfolderBase]: For 123344/123344 co-relation queries the response was YES.
[2023-11-19 08:00:29,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73667 conditions, 11698 events. 8721/11698 cut-off events. For 123344/123344 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 54442 event pairs, 2163 based on Foata normal form. 414/12112 useless extension candidates. Maximal degree in co-relation 64956. Up to 9720 conditions per place.
[2023-11-19 08:00:29,477 INFO L140 encePairwiseOnDemand]: 237/242 looper letters, 187 selfloop transitions, 20 changer transitions 1/208 dead transitions.
[2023-11-19 08:00:29,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 208 transitions, 3199 flow
[2023-11-19 08:00:29,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 08:00:29,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 08:00:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 509 transitions.
[2023-11-19 08:00:29,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258264462809917
[2023-11-19 08:00:29,489 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 509 transitions.
[2023-11-19 08:00:29,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 509 transitions.
[2023-11-19 08:00:29,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:29,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 509 transitions.
[2023-11-19 08:00:29,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 0 states have call successors, (0), 0 states 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 08:00:29,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:29,496 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:29,496 INFO L175 Difference]: Start difference. First operand has 81 places, 123 transitions, 1691 flow. Second operand 4 states and 509 transitions.
[2023-11-19 08:00:29,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 208 transitions, 3199 flow
[2023-11-19 08:00:29,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 208 transitions, 3041 flow, removed 46 selfloop flow, removed 2 redundant places.
[2023-11-19 08:00:29,622 INFO L231 Difference]: Finished difference. Result has 84 places, 131 transitions, 1761 flow
[2023-11-19 08:00:29,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1761, PETRI_PLACES=84, PETRI_TRANSITIONS=131}
[2023-11-19 08:00:29,623 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 46 predicate places.
[2023-11-19 08:00:29,623 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 131 transitions, 1761 flow
[2023-11-19 08:00:29,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 08:00:29,623 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:29,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:29,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-19 08:00:29,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:00:29,824 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:29,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:29,825 INFO L85 PathProgramCache]: Analyzing trace with hash 99986775, now seen corresponding path program 2 times
[2023-11-19 08:00:29,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:29,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308440569]
[2023-11-19 08:00:29,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:29,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-19 08:00:30,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:30,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308440569]
[2023-11-19 08:00:30,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308440569] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 08:00:30,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337526302]
[2023-11-19 08:00:30,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-19 08:00:30,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:00:30,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:00:30,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 08:00:30,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-19 08:00:30,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-11-19 08:00:30,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 08:00:30,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-19 08:00:30,149 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:00:30,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-19 08:00:30,234 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 08:00:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-19 08:00:30,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337526302] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 08:00:30,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 08:00:30,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7
[2023-11-19 08:00:30,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832686234]
[2023-11-19 08:00:30,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 08:00:30,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-19 08:00:30,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:30,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-19 08:00:30,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-11-19 08:00:30,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 242
[2023-11-19 08:00:30,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 131 transitions, 1761 flow. Second operand has 7 states, 7 states have (on average 114.57142857142857) internal successors, (802), 7 states have internal predecessors, (802), 0 states have call successors, (0), 0 states 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 08:00:30,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:30,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 242
[2023-11-19 08:00:30,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:33,116 INFO L124 PetriNetUnfolderBase]: 12169/16246 cut-off events.
[2023-11-19 08:00:33,116 INFO L125 PetriNetUnfolderBase]: For 185394/185394 co-relation queries the response was YES.
[2023-11-19 08:00:33,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107450 conditions, 16246 events. 12169/16246 cut-off events. For 185394/185394 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 78431 event pairs, 3037 based on Foata normal form. 342/16588 useless extension candidates. Maximal degree in co-relation 93178. Up to 9981 conditions per place.
[2023-11-19 08:00:33,338 INFO L140 encePairwiseOnDemand]: 234/242 looper letters, 350 selfloop transitions, 100 changer transitions 3/453 dead transitions.
[2023-11-19 08:00:33,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 453 transitions, 7015 flow
[2023-11-19 08:00:33,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2023-11-19 08:00:33,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2023-11-19 08:00:33,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1096 transitions.
[2023-11-19 08:00:33,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032139577594124
[2023-11-19 08:00:33,343 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1096 transitions.
[2023-11-19 08:00:33,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1096 transitions.
[2023-11-19 08:00:33,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:33,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1096 transitions.
[2023-11-19 08:00:33,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.77777777777777) internal successors, (1096), 9 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states 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 08:00:33,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 242.0) internal successors, (2420), 10 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states 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 08:00:33,355 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 242.0) internal successors, (2420), 10 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states 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 08:00:33,355 INFO L175 Difference]: Start difference. First operand has 84 places, 131 transitions, 1761 flow. Second operand 9 states and 1096 transitions.
[2023-11-19 08:00:33,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 453 transitions, 7015 flow
[2023-11-19 08:00:33,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 453 transitions, 6991 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 08:00:33,586 INFO L231 Difference]: Finished difference. Result has 96 places, 217 transitions, 3467 flow
[2023-11-19 08:00:33,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3467, PETRI_PLACES=96, PETRI_TRANSITIONS=217}
[2023-11-19 08:00:33,587 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 58 predicate places.
[2023-11-19 08:00:33,587 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 217 transitions, 3467 flow
[2023-11-19 08:00:33,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.57142857142857) internal successors, (802), 7 states have internal predecessors, (802), 0 states have call successors, (0), 0 states 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 08:00:33,588 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:33,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:33,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-19 08:00:33,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:00:33,809 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:33,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:33,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1617420985, now seen corresponding path program 3 times
[2023-11-19 08:00:33,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:33,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485332805]
[2023-11-19 08:00:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:33,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-19 08:00:33,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:33,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485332805]
[2023-11-19 08:00:33,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485332805] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 08:00:33,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161828713]
[2023-11-19 08:00:33,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-11-19 08:00:33,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:00:33,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:00:33,979 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 08:00:33,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-19 08:00:34,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2023-11-19 08:00:34,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 08:00:34,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-19 08:00:34,110 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:00:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-19 08:00:34,178 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 08:00:34,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-19 08:00:34,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161828713] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 08:00:34,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 08:00:34,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8
[2023-11-19 08:00:34,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534201697]
[2023-11-19 08:00:34,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 08:00:34,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-19 08:00:34,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:34,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-19 08:00:34,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2023-11-19 08:00:34,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 242
[2023-11-19 08:00:34,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 217 transitions, 3467 flow. Second operand has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 08:00:34,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:34,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 242
[2023-11-19 08:00:34,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:37,090 INFO L124 PetriNetUnfolderBase]: 12529/16526 cut-off events.
[2023-11-19 08:00:37,090 INFO L125 PetriNetUnfolderBase]: For 242235/242235 co-relation queries the response was YES.
[2023-11-19 08:00:37,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122431 conditions, 16526 events. 12529/16526 cut-off events. For 242235/242235 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 77155 event pairs, 2633 based on Foata normal form. 390/16916 useless extension candidates. Maximal degree in co-relation 115974. Up to 9329 conditions per place.
[2023-11-19 08:00:37,237 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 233 selfloop transitions, 160 changer transitions 1/394 dead transitions.
[2023-11-19 08:00:37,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 394 transitions, 6841 flow
[2023-11-19 08:00:37,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2023-11-19 08:00:37,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2023-11-19 08:00:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 731 transitions.
[2023-11-19 08:00:37,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034435261707989
[2023-11-19 08:00:37,241 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 731 transitions.
[2023-11-19 08:00:37,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 731 transitions.
[2023-11-19 08:00:37,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:37,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 731 transitions.
[2023-11-19 08:00:37,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 121.83333333333333) internal successors, (731), 6 states have internal predecessors, (731), 0 states have call successors, (0), 0 states 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 08:00:37,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 242.0) internal successors, (1694), 7 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states 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 08:00:37,249 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 242.0) internal successors, (1694), 7 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states 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 08:00:37,249 INFO L175 Difference]: Start difference. First operand has 96 places, 217 transitions, 3467 flow. Second operand 6 states and 731 transitions.
[2023-11-19 08:00:37,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 394 transitions, 6841 flow
[2023-11-19 08:00:37,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 394 transitions, 6425 flow, removed 208 selfloop flow, removed 0 redundant places.
[2023-11-19 08:00:37,927 INFO L231 Difference]: Finished difference. Result has 104 places, 288 transitions, 5023 flow
[2023-11-19 08:00:37,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=3263, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5023, PETRI_PLACES=104, PETRI_TRANSITIONS=288}
[2023-11-19 08:00:37,928 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 66 predicate places.
[2023-11-19 08:00:37,928 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 288 transitions, 5023 flow
[2023-11-19 08:00:37,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 08:00:37,929 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:37,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:37,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-11-19 08:00:38,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:00:38,142 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:38,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:38,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1592594121, now seen corresponding path program 1 times
[2023-11-19 08:00:38,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:38,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876778140]
[2023-11-19 08:00:38,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:38,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:38,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:38,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876778140]
[2023-11-19 08:00:38,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876778140] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 08:00:38,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937375207]
[2023-11-19 08:00:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:38,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:00:38,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:00:38,403 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 08:00:38,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-19 08:00:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:38,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-11-19 08:00:38,537 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:00:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:38,578 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 08:00:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:38,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937375207] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 08:00:38,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 08:00:38,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 4
[2023-11-19 08:00:38,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677430744]
[2023-11-19 08:00:38,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 08:00:38,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-19 08:00:38,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:38,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-19 08:00:38,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-11-19 08:00:38,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 242
[2023-11-19 08:00:38,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 288 transitions, 5023 flow. Second operand has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states 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 08:00:38,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:38,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 242
[2023-11-19 08:00:38,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 08:00:44,795 INFO L124 PetriNetUnfolderBase]: 24284/32858 cut-off events.
[2023-11-19 08:00:44,795 INFO L125 PetriNetUnfolderBase]: For 490041/490041 co-relation queries the response was YES.
[2023-11-19 08:00:44,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236834 conditions, 32858 events. 24284/32858 cut-off events. For 490041/490041 co-relation queries the response was YES. Maximal size of possible extension queue 1435. Compared 182996 event pairs, 4327 based on Foata normal form. 2599/35457 useless extension candidates. Maximal degree in co-relation 228735. Up to 18727 conditions per place.
[2023-11-19 08:00:45,116 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 323 selfloop transitions, 262 changer transitions 3/588 dead transitions.
[2023-11-19 08:00:45,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 588 transitions, 10766 flow
[2023-11-19 08:00:45,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 08:00:45,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 08:00:45,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 551 transitions.
[2023-11-19 08:00:45,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5692148760330579
[2023-11-19 08:00:45,119 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 551 transitions.
[2023-11-19 08:00:45,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 551 transitions.
[2023-11-19 08:00:45,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 08:00:45,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 551 transitions.
[2023-11-19 08:00:45,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.75) internal successors, (551), 4 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 08:00:45,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:45,125 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 08:00:45,125 INFO L175 Difference]: Start difference. First operand has 104 places, 288 transitions, 5023 flow. Second operand 4 states and 551 transitions.
[2023-11-19 08:00:45,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 588 transitions, 10766 flow
[2023-11-19 08:00:47,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 588 transitions, 10496 flow, removed 58 selfloop flow, removed 3 redundant places.
[2023-11-19 08:00:47,229 INFO L231 Difference]: Finished difference. Result has 105 places, 515 transitions, 10191 flow
[2023-11-19 08:00:47,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=4849, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=10191, PETRI_PLACES=105, PETRI_TRANSITIONS=515}
[2023-11-19 08:00:47,230 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 67 predicate places.
[2023-11-19 08:00:47,231 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 515 transitions, 10191 flow
[2023-11-19 08:00:47,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states 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 08:00:47,232 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 08:00:47,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 08:00:47,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-11-19 08:00:47,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:00:47,432 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 08:00:47,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 08:00:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash -770106255, now seen corresponding path program 2 times
[2023-11-19 08:00:47,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 08:00:47,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58896834]
[2023-11-19 08:00:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 08:00:47,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 08:00:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 08:00:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 08:00:47,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 08:00:47,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58896834]
[2023-11-19 08:00:47,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58896834] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 08:00:47,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772096039]
[2023-11-19 08:00:47,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-19 08:00:47,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 08:00:47,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 08:00:47,638 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 08:00:47,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64ddf067-5f69-4776-8cea-096c73bfbd8f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-19 08:00:47,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-11-19 08:00:47,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 08:00:47,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 25 conjunts are in the unsatisfiable core
[2023-11-19 08:00:47,782 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 08:00:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 08:00:47,959 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 08:00:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 08:00:48,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772096039] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 08:00:48,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 08:00:48,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 6] total 16
[2023-11-19 08:00:48,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285003222]
[2023-11-19 08:00:48,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 08:00:48,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2023-11-19 08:00:48,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 08:00:48,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2023-11-19 08:00:48,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306
[2023-11-19 08:00:48,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 242
[2023-11-19 08:00:48,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 515 transitions, 10191 flow. Second operand has 18 states, 18 states have (on average 103.72222222222223) internal successors, (1867), 18 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states 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 08:00:48,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 08:00:48,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 242
[2023-11-19 08:00:48,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand