./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/03_incdec.i --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_e392b3ac-77eb-4eb4-9260-27ff9f683017/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e392b3ac-77eb-4eb4-9260-27ff9f683017/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_e392b3ac-77eb-4eb4-9260-27ff9f683017/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e392b3ac-77eb-4eb4-9260-27ff9f683017/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/03_incdec.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e392b3ac-77eb-4eb4-9260-27ff9f683017/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_e392b3ac-77eb-4eb4-9260-27ff9f683017/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 c1c717c54832d7b18d55a1459c6f740661389c67176a032001ce64e3c282b955
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:46:51,473 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:46:51,586 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e392b3ac-77eb-4eb4-9260-27ff9f683017/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-19 07:46:51,594 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:46:51,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:46:51,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:46:51,632 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:46:51,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:46:51,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:46:51,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:46:51,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:46:51,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:46:51,640 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:46:51,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:46:51,642 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-11-19 07:46:51,642 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 07:46:51,643 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:46:51,643 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 07:46:51,644 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:46:51,644 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 07:46:51,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:46:51,645 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 07:46:51,645 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 07:46:51,646 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-11-19 07:46:51,646 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:46:51,647 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:46:51,647 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:46:51,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:46:51,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:46:51,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:46:51,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:46:51,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 07:46:51,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:46:51,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:46:51,651 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:46:51,651 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 07:46:51,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:46:51,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:46:51,652 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:46:51,652 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_e392b3ac-77eb-4eb4-9260-27ff9f683017/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e392b3ac-77eb-4eb4-9260-27ff9f683017/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1c717c54832d7b18d55a1459c6f740661389c67176a032001ce64e3c282b955
[2023-11-19 07:46:51,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:46:51,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:46:51,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:46:51,967 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:46:51,967 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:46:51,969 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e392b3ac-77eb-4eb4-9260-27ff9f683017/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/03_incdec.i
[2023-11-19 07:46:55,040 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:46:55,374 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:46:55,375 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e392b3ac-77eb-4eb4-9260-27ff9f683017/sv-benchmarks/c/pthread-ext/03_incdec.i
[2023-11-19 07:46:55,396 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e392b3ac-77eb-4eb4-9260-27ff9f683017/bin/uautomizer-verify-uCwYo4JHxu/data/cde047f80/4ce1e06866714a489f273de056d9d62e/FLAG17c901dae
[2023-11-19 07:46:55,416 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e392b3ac-77eb-4eb4-9260-27ff9f683017/bin/uautomizer-verify-uCwYo4JHxu/data/cde047f80/4ce1e06866714a489f273de056d9d62e
[2023-11-19 07:46:55,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:46:55,424 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:46:55,427 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:46:55,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:46:55,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:46:55,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:55" (1/1) ...
[2023-11-19 07:46:55,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5980ceb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:55, skipping insertion in model container
[2023-11-19 07:46:55,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:55" (1/1) ...
[2023-11-19 07:46:55,493 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:46:55,816 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_e392b3ac-77eb-4eb4-9260-27ff9f683017/sv-benchmarks/c/pthread-ext/03_incdec.i[30534,30547]
[2023-11-19 07:46:55,822 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_e392b3ac-77eb-4eb4-9260-27ff9f683017/sv-benchmarks/c/pthread-ext/03_incdec.i[30928,30941]
[2023-11-19 07:46:55,829 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:46:55,839 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 07:46:55,877 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_e392b3ac-77eb-4eb4-9260-27ff9f683017/sv-benchmarks/c/pthread-ext/03_incdec.i[30534,30547]
[2023-11-19 07:46:55,880 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_e392b3ac-77eb-4eb4-9260-27ff9f683017/sv-benchmarks/c/pthread-ext/03_incdec.i[30928,30941]
[2023-11-19 07:46:55,883 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:46:55,925 INFO L206 MainTranslator]: Completed translation
[2023-11-19 07:46:55,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:55 WrapperNode
[2023-11-19 07:46:55,926 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:46:55,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:46:55,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:46:55,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:46:55,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:55" (1/1) ...
[2023-11-19 07:46:55,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:55" (1/1) ...
[2023-11-19 07:46:55,975 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 133
[2023-11-19 07:46:55,976 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:46:55,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:46:55,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:46:55,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:46:55,986 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:55" (1/1) ...
[2023-11-19 07:46:55,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:55" (1/1) ...
[2023-11-19 07:46:55,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:55" (1/1) ...
[2023-11-19 07:46:55,990 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:55" (1/1) ...
[2023-11-19 07:46:55,997 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:55" (1/1) ...
[2023-11-19 07:46:56,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:55" (1/1) ...
[2023-11-19 07:46:56,003 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:55" (1/1) ...
[2023-11-19 07:46:56,004 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:55" (1/1) ...
[2023-11-19 07:46:56,008 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:46:56,009 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:46:56,009 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:46:56,009 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:46:56,010 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:55" (1/1) ...
[2023-11-19 07:46:56,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:46:56,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e392b3ac-77eb-4eb4-9260-27ff9f683017/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:46:56,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e392b3ac-77eb-4eb4-9260-27ff9f683017/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:46:56,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e392b3ac-77eb-4eb4-9260-27ff9f683017/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:46:56,097 INFO L130 BoogieDeclarations]: Found specification of procedure thr1
[2023-11-19 07:46:56,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1
[2023-11-19 07:46:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-11-19 07:46:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:46:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:46:56,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:46:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:46:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:46:56,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:46:56,103 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-11-19 07:46:56,231 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 07:46:56,237 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:46:56,513 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 07:46:56,723 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:46:56,724 INFO L302 CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-19 07:46:56,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:56 BoogieIcfgContainer
[2023-11-19 07:46:56,728 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:46:56,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:46:56,730 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:46:56,734 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:46:56,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:46:55" (1/3) ...
[2023-11-19 07:46:56,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ada72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:56, skipping insertion in model container
[2023-11-19 07:46:56,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:55" (2/3) ...
[2023-11-19 07:46:56,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ada72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:56, skipping insertion in model container
[2023-11-19 07:46:56,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:56" (3/3) ...
[2023-11-19 07:46:56,738 INFO L112 eAbstractionObserver]: Analyzing ICFG 03_incdec.i
[2023-11-19 07:46:56,746 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2023-11-19 07:46:56,754 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:46:56,754 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2023-11-19 07:46:56,754 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-11-19 07:46:56,811 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2023-11-19 07:46:56,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 83 transitions, 170 flow
[2023-11-19 07:46:56,914 INFO L124 PetriNetUnfolderBase]: 7/94 cut-off events.
[2023-11-19 07:46:56,915 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:46:56,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 94 events. 7/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 186 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place.
[2023-11-19 07:46:56,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 83 transitions, 170 flow
[2023-11-19 07:46:56,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 83 transitions, 170 flow
[2023-11-19 07:46:56,931 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:46:56,945 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 83 transitions, 170 flow
[2023-11-19 07:46:56,947 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 83 transitions, 170 flow
[2023-11-19 07:46:56,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 83 transitions, 170 flow
[2023-11-19 07:46:56,971 INFO L124 PetriNetUnfolderBase]: 7/94 cut-off events.
[2023-11-19 07:46:56,971 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:46:56,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 94 events. 7/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 186 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place.
[2023-11-19 07:46:56,975 INFO L119 LiptonReduction]: Number of co-enabled transitions 1540
[2023-11-19 07:47:01,410 INFO L134 LiptonReduction]: Checked pairs total: 1514
[2023-11-19 07:47:01,410 INFO L136 LiptonReduction]: Total number of compositions: 110
[2023-11-19 07:47:01,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:47:01,433 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;@10016d61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:47:01,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2023-11-19 07:47:01,436 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 07:47:01,436 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events.
[2023-11-19 07:47:01,436 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:47:01,437 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:47:01,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1]
[2023-11-19 07:47:01,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 07:47:01,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:47:01,444 INFO L85 PathProgramCache]: Analyzing trace with hash 18786765, now seen corresponding path program 1 times
[2023-11-19 07:47:01,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:47:01,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205065942]
[2023-11-19 07:47:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:47:01,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:47:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:47:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:47:01,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:47:01,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205065942]
[2023-11-19 07:47:01,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205065942] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:47:01,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:47:01,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:47:01,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027016356]
[2023-11-19 07:47:01,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:47:01,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-19 07:47:01,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:47:01,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-19 07:47:01,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 07:47:01,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 193
[2023-11-19 07:47:01,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 9 transitions, 22 flow. Second operand has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:47:01,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:47:01,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 193
[2023-11-19 07:47:01,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:47:01,699 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events.
[2023-11-19 07:47:01,699 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:47:01,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 2 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place.
[2023-11-19 07:47:01,701 INFO L140 encePairwiseOnDemand]: 190/193 looper letters, 5 selfloop transitions, 0 changer transitions 0/6 dead transitions.
[2023-11-19 07:47:01,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 26 flow
[2023-11-19 07:47:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-11-19 07:47:01,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2023-11-19 07:47:01,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 140 transitions.
[2023-11-19 07:47:01,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3626943005181347
[2023-11-19 07:47:01,722 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 140 transitions.
[2023-11-19 07:47:01,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 140 transitions.
[2023-11-19 07:47:01,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:47:01,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 140 transitions.
[2023-11-19 07:47:01,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:47:01,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:47:01,740 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:47:01,742 INFO L175 Difference]: Start difference. First operand has 12 places, 9 transitions, 22 flow. Second operand 2 states and 140 transitions.
[2023-11-19 07:47:01,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 26 flow
[2023-11-19 07:47:01,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 26 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-11-19 07:47:01,748 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 16 flow
[2023-11-19 07:47:01,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=16, PETRI_PLACES=10, PETRI_TRANSITIONS=6}
[2023-11-19 07:47:01,756 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, -2 predicate places.
[2023-11-19 07:47:01,756 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 16 flow
[2023-11-19 07:47:01,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:47:01,757 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:47:01,758 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1]
[2023-11-19 07:47:01,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 07:47:01,758 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] ===
[2023-11-19 07:47:01,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:47:01,761 INFO L85 PathProgramCache]: Analyzing trace with hash 874153935, now seen corresponding path program 1 times
[2023-11-19 07:47:01,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:47:01,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146382927]
[2023-11-19 07:47:01,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:47:01,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:47:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:47:01,823 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-19 07:47:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:47:01,872 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-11-19 07:47:01,872 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-11-19 07:47:01,874 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining)
[2023-11-19 07:47:01,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining)
[2023-11-19 07:47:01,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining)
[2023-11-19 07:47:01,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining)
[2023-11-19 07:47:01,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining)
[2023-11-19 07:47:01,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 07:47:01,879 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1]
[2023-11-19 07:47:01,883 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis
[2023-11-19 07:47:01,883 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances.
[2023-11-19 07:47:01,937 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2023-11-19 07:47:01,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 139 transitions, 288 flow
[2023-11-19 07:47:01,995 INFO L124 PetriNetUnfolderBase]: 13/163 cut-off events.
[2023-11-19 07:47:01,996 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-11-19 07:47:01,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 163 events. 13/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 518 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 123. Up to 6 conditions per place.
[2023-11-19 07:47:01,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 139 transitions, 288 flow
[2023-11-19 07:47:02,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 139 transitions, 288 flow
[2023-11-19 07:47:02,001 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:47:02,002 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 139 transitions, 288 flow
[2023-11-19 07:47:02,002 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 139 transitions, 288 flow
[2023-11-19 07:47:02,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 139 transitions, 288 flow
[2023-11-19 07:47:02,028 INFO L124 PetriNetUnfolderBase]: 13/163 cut-off events.
[2023-11-19 07:47:02,029 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-11-19 07:47:02,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 163 events. 13/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 518 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 123. Up to 6 conditions per place.
[2023-11-19 07:47:02,039 INFO L119 LiptonReduction]: Number of co-enabled transitions 9240
[2023-11-19 07:47:04,645 INFO L134 LiptonReduction]: Checked pairs total: 29603
[2023-11-19 07:47:04,645 INFO L136 LiptonReduction]: Total number of compositions: 112
[2023-11-19 07:47:04,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:47:04,649 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;@10016d61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:47:04,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations.
[2023-11-19 07:47:04,656 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 07:47:04,656 INFO L124 PetriNetUnfolderBase]: 3/43 cut-off events.
[2023-11-19 07:47:04,657 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-11-19 07:47:04,657 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:47:04,657 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1]
[2023-11-19 07:47:04,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2023-11-19 07:47:04,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:47:04,658 INFO L85 PathProgramCache]: Analyzing trace with hash 278711663, now seen corresponding path program 1 times
[2023-11-19 07:47:04,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:47:04,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646235163]
[2023-11-19 07:47:04,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:47:04,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:47:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:47:04,680 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-19 07:47:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:47:04,699 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-11-19 07:47:04,700 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-11-19 07:47:04,700 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining)
[2023-11-19 07:47:04,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining)
[2023-11-19 07:47:04,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining)
[2023-11-19 07:47:04,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining)
[2023-11-19 07:47:04,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining)
[2023-11-19 07:47:04,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining)
[2023-11-19 07:47:04,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining)
[2023-11-19 07:47:04,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-19 07:47:04,702 INFO L445 BasicCegarLoop]: Path program histogram: [1]
[2023-11-19 07:47:04,703 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis
[2023-11-19 07:47:04,703 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances.
[2023-11-19 07:47:04,738 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2023-11-19 07:47:04,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 195 transitions, 408 flow
[2023-11-19 07:47:04,800 INFO L124 PetriNetUnfolderBase]: 19/232 cut-off events.
[2023-11-19 07:47:04,801 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES.
[2023-11-19 07:47:04,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 232 events. 19/232 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 851 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 178. Up to 8 conditions per place.
[2023-11-19 07:47:04,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 195 transitions, 408 flow
[2023-11-19 07:47:04,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 195 transitions, 408 flow
[2023-11-19 07:47:04,812 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:47:04,812 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 195 transitions, 408 flow
[2023-11-19 07:47:04,812 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 195 transitions, 408 flow
[2023-11-19 07:47:04,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 195 transitions, 408 flow
[2023-11-19 07:47:04,853 INFO L124 PetriNetUnfolderBase]: 19/232 cut-off events.
[2023-11-19 07:47:04,853 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES.
[2023-11-19 07:47:04,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 232 events. 19/232 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 851 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 178. Up to 8 conditions per place.
[2023-11-19 07:47:04,874 INFO L119 LiptonReduction]: Number of co-enabled transitions 23100
[2023-11-19 07:47:08,509 INFO L134 LiptonReduction]: Checked pairs total: 87663
[2023-11-19 07:47:08,509 INFO L136 LiptonReduction]: Total number of compositions: 159
[2023-11-19 07:47:08,512 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:47:08,513 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;@10016d61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:47:08,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations.
[2023-11-19 07:47:08,519 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 07:47:08,519 INFO L124 PetriNetUnfolderBase]: 5/50 cut-off events.
[2023-11-19 07:47:08,520 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES.
[2023-11-19 07:47:08,520 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:47:08,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:47:08,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] ===
[2023-11-19 07:47:08,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:47:08,521 INFO L85 PathProgramCache]: Analyzing trace with hash 160125314, now seen corresponding path program 1 times
[2023-11-19 07:47:08,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:47:08,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313681514]
[2023-11-19 07:47:08,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:47:08,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:47:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:47:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:47:08,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:47:08,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313681514]
[2023-11-19 07:47:08,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313681514] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:47:08,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:47:08,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:47:08,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439892600]
[2023-11-19 07:47:08,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:47:08,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:47:08,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:47:08,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:47:08,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:47:08,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 354
[2023-11-19 07:47:08,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 91 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:47:08,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:47:08,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 354
[2023-11-19 07:47:08,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:47:11,135 INFO L124 PetriNetUnfolderBase]: 12431/18666 cut-off events.
[2023-11-19 07:47:11,136 INFO L125 PetriNetUnfolderBase]: For 877/877 co-relation queries the response was YES.
[2023-11-19 07:47:11,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36355 conditions, 18666 events. 12431/18666 cut-off events. For 877/877 co-relation queries the response was YES. Maximal size of possible extension queue 1081. Compared 131627 event pairs, 5709 based on Foata normal form. 228/17559 useless extension candidates. Maximal degree in co-relation 8957. Up to 16663 conditions per place.
[2023-11-19 07:47:11,291 INFO L140 encePairwiseOnDemand]: 338/354 looper letters, 65 selfloop transitions, 4 changer transitions 0/95 dead transitions.
[2023-11-19 07:47:11,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 95 transitions, 358 flow
[2023-11-19 07:47:11,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:47:11,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:47:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions.
[2023-11-19 07:47:11,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585687382297552
[2023-11-19 07:47:11,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions.
[2023-11-19 07:47:11,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions.
[2023-11-19 07:47:11,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:47:11,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions.
[2023-11-19 07:47:11,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:47:11,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:47:11,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:47:11,305 INFO L175 Difference]: Start difference. First operand has 84 places, 91 transitions, 200 flow. Second operand 3 states and 487 transitions.
[2023-11-19 07:47:11,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 95 transitions, 358 flow
[2023-11-19 07:47:11,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 95 transitions, 354 flow, removed 2 selfloop flow, removed 0 redundant places.
[2023-11-19 07:47:11,310 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 212 flow
[2023-11-19 07:47:11,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=81, PETRI_TRANSITIONS=83}
[2023-11-19 07:47:11,312 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places.
[2023-11-19 07:47:11,312 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 212 flow
[2023-11-19 07:47:11,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:47:11,313 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:47:11,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:47:11,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-19 07:47:11,314 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] ===
[2023-11-19 07:47:11,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:47:11,314 INFO L85 PathProgramCache]: Analyzing trace with hash 878108006, now seen corresponding path program 1 times
[2023-11-19 07:47:11,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:47:11,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559831251]
[2023-11-19 07:47:11,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:47:11,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:47:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:47:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:47:11,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:47:11,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559831251]
[2023-11-19 07:47:11,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559831251] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:47:11,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:47:11,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 07:47:11,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586213887]
[2023-11-19 07:47:11,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:47:11,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-19 07:47:11,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:47:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-19 07:47:11,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-11-19 07:47:11,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 354
[2023-11-19 07:47:11,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:47:11,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:47:11,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 354
[2023-11-19 07:47:11,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:47:15,426 INFO L124 PetriNetUnfolderBase]: 20381/30793 cut-off events.
[2023-11-19 07:47:15,428 INFO L125 PetriNetUnfolderBase]: For 3457/3457 co-relation queries the response was YES.
[2023-11-19 07:47:15,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63289 conditions, 30793 events. 20381/30793 cut-off events. For 3457/3457 co-relation queries the response was YES. Maximal size of possible extension queue 1780. Compared 232645 event pairs, 6523 based on Foata normal form. 494/29512 useless extension candidates. Maximal degree in co-relation 45204. Up to 15245 conditions per place.
[2023-11-19 07:47:15,762 INFO L140 encePairwiseOnDemand]: 341/354 looper letters, 154 selfloop transitions, 17 changer transitions 0/193 dead transitions.
[2023-11-19 07:47:15,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 193 transitions, 841 flow
[2023-11-19 07:47:15,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2023-11-19 07:47:15,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2023-11-19 07:47:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 936 transitions.
[2023-11-19 07:47:15,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4406779661016949
[2023-11-19 07:47:15,767 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 936 transitions.
[2023-11-19 07:47:15,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 936 transitions.
[2023-11-19 07:47:15,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:47:15,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 936 transitions.
[2023-11-19 07:47:15,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:47:15,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 354.0) internal successors, (2478), 7 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:47:15,785 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 354.0) internal successors, (2478), 7 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:47:15,786 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 212 flow. Second operand 6 states and 936 transitions.
[2023-11-19 07:47:15,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 193 transitions, 841 flow
[2023-11-19 07:47:15,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 193 transitions, 835 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:47:15,797 INFO L231 Difference]: Finished difference. Result has 87 places, 94 transitions, 312 flow
[2023-11-19 07:47:15,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=87, PETRI_TRANSITIONS=94}
[2023-11-19 07:47:15,799 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 3 predicate places.
[2023-11-19 07:47:15,800 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 94 transitions, 312 flow
[2023-11-19 07:47:15,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:47:15,801 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:47:15,801 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1]
[2023-11-19 07:47:15,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-19 07:47:15,802 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] ===
[2023-11-19 07:47:15,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:47:15,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1386499448, now seen corresponding path program 1 times
[2023-11-19 07:47:15,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:47:15,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504733732]
[2023-11-19 07:47:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:47:15,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:47:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:47:15,829 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-19 07:47:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:47:15,856 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-11-19 07:47:15,857 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-11-19 07:47:15,857 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining)
[2023-11-19 07:47:15,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining)
[2023-11-19 07:47:15,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining)
[2023-11-19 07:47:15,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining)
[2023-11-19 07:47:15,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining)
[2023-11-19 07:47:15,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining)
[2023-11-19 07:47:15,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining)
[2023-11-19 07:47:15,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining)
[2023-11-19 07:47:15,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining)
[2023-11-19 07:47:15,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-19 07:47:15,860 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2023-11-19 07:47:15,861 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis
[2023-11-19 07:47:15,861 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances.
[2023-11-19 07:47:15,911 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2023-11-19 07:47:15,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 251 transitions, 530 flow
[2023-11-19 07:47:15,969 INFO L124 PetriNetUnfolderBase]: 25/301 cut-off events.
[2023-11-19 07:47:15,969 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES.
[2023-11-19 07:47:15,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 301 events. 25/301 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1206 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 240. Up to 10 conditions per place.
[2023-11-19 07:47:15,972 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 251 transitions, 530 flow
[2023-11-19 07:47:15,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 251 transitions, 530 flow
[2023-11-19 07:47:15,976 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:47:15,976 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 251 transitions, 530 flow
[2023-11-19 07:47:15,976 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 251 transitions, 530 flow
[2023-11-19 07:47:15,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 251 transitions, 530 flow
[2023-11-19 07:47:16,020 INFO L124 PetriNetUnfolderBase]: 25/301 cut-off events.
[2023-11-19 07:47:16,021 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES.
[2023-11-19 07:47:16,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 301 events. 25/301 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1206 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 240. Up to 10 conditions per place.
[2023-11-19 07:47:16,045 INFO L119 LiptonReduction]: Number of co-enabled transitions 43120
[2023-11-19 07:47:20,722 INFO L134 LiptonReduction]: Checked pairs total: 148863
[2023-11-19 07:47:20,723 INFO L136 LiptonReduction]: Total number of compositions: 198
[2023-11-19 07:47:20,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:47:20,727 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;@10016d61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:47:20,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations.
[2023-11-19 07:47:20,732 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 07:47:20,733 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events.
[2023-11-19 07:47:20,733 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES.
[2023-11-19 07:47:20,733 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:47:20,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:47:20,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] ===
[2023-11-19 07:47:20,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:47:20,734 INFO L85 PathProgramCache]: Analyzing trace with hash -845205379, now seen corresponding path program 1 times
[2023-11-19 07:47:20,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:47:20,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640459527]
[2023-11-19 07:47:20,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:47:20,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:47:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:47:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:47:20,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:47:20,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640459527]
[2023-11-19 07:47:20,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640459527] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:47:20,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:47:20,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:47:20,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819178171]
[2023-11-19 07:47:20,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:47:20,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:47:20,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:47:20,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:47:20,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:47:20,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 449
[2023-11-19 07:47:20,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 120 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:47:20,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:47:20,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 449
[2023-11-19 07:47:20,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand