./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/time_var_mutex.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 9bd2c7ff
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c4e78c-8a9c-4758-be94-bbd77368380d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c4e78c-8a9c-4758-be94-bbd77368380d/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_37c4e78c-8a9c-4758-be94-bbd77368380d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c4e78c-8a9c-4758-be94-bbd77368380d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/time_var_mutex.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c4e78c-8a9c-4758-be94-bbd77368380d/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_37c4e78c-8a9c-4758-be94-bbd77368380d/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 1985bb251db70a1c798d345be7e1671f9dcc6a359b969ca99d23e0003d9a3770
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:42:46,908 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:42:46,997 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c4e78c-8a9c-4758-be94-bbd77368380d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-19 07:42:47,004 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:42:47,004 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:42:47,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:42:47,032 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:42:47,033 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:42:47,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:42:47,035 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:42:47,036 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:42:47,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:42:47,038 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:42:47,038 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:42:47,039 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-11-19 07:42:47,040 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 07:42:47,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:42:47,041 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 07:42:47,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:42:47,042 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 07:42:47,043 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:42:47,043 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 07:42:47,044 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 07:42:47,045 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-11-19 07:42:47,045 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:42:47,046 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:42:47,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:42:47,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:42:47,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:42:47,047 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:42:47,048 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:42:47,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 07:42:47,049 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:42:47,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:42:47,050 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:42:47,050 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 07:42:47,051 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:42:47,051 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:42:47,052 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:42:47,052 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_37c4e78c-8a9c-4758-be94-bbd77368380d/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c4e78c-8a9c-4758-be94-bbd77368380d/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1985bb251db70a1c798d345be7e1671f9dcc6a359b969ca99d23e0003d9a3770
[2023-11-19 07:42:47,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:42:47,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:42:47,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:42:47,447 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:42:47,448 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:42:47,450 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c4e78c-8a9c-4758-be94-bbd77368380d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-atomic/time_var_mutex.i
[2023-11-19 07:42:50,766 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:42:51,112 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:42:51,113 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c4e78c-8a9c-4758-be94-bbd77368380d/sv-benchmarks/c/pthread-atomic/time_var_mutex.i
[2023-11-19 07:42:51,133 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c4e78c-8a9c-4758-be94-bbd77368380d/bin/uautomizer-verify-uCwYo4JHxu/data/11f7a6a0b/123f400609204516bb3aaca5298cdd77/FLAGf371edff6
[2023-11-19 07:42:51,152 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c4e78c-8a9c-4758-be94-bbd77368380d/bin/uautomizer-verify-uCwYo4JHxu/data/11f7a6a0b/123f400609204516bb3aaca5298cdd77
[2023-11-19 07:42:51,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:42:51,158 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:42:51,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:42:51,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:42:51,170 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:42:51,172 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:51" (1/1) ...
[2023-11-19 07:42:51,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f0262c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:51, skipping insertion in model container
[2023-11-19 07:42:51,175 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:51" (1/1) ...
[2023-11-19 07:42:51,257 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:42:51,819 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_37c4e78c-8a9c-4758-be94-bbd77368380d/sv-benchmarks/c/pthread-atomic/time_var_mutex.i[30247,30260]
[2023-11-19 07:42:51,830 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_37c4e78c-8a9c-4758-be94-bbd77368380d/sv-benchmarks/c/pthread-atomic/time_var_mutex.i[30452,30465]
[2023-11-19 07:42:51,844 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:42:51,863 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 07:42:51,932 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_37c4e78c-8a9c-4758-be94-bbd77368380d/sv-benchmarks/c/pthread-atomic/time_var_mutex.i[30247,30260]
[2023-11-19 07:42:51,939 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_37c4e78c-8a9c-4758-be94-bbd77368380d/sv-benchmarks/c/pthread-atomic/time_var_mutex.i[30452,30465]
[2023-11-19 07:42:51,951 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:42:52,007 INFO L206 MainTranslator]: Completed translation
[2023-11-19 07:42:52,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:52 WrapperNode
[2023-11-19 07:42:52,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:42:52,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:42:52,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:42:52,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:42:52,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:52" (1/1) ...
[2023-11-19 07:42:52,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:52" (1/1) ...
[2023-11-19 07:42:52,070 INFO L138 Inliner]: procedures = 169, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61
[2023-11-19 07:42:52,070 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:42:52,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:42:52,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:42:52,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:42:52,085 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:52" (1/1) ...
[2023-11-19 07:42:52,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:52" (1/1) ...
[2023-11-19 07:42:52,090 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:52" (1/1) ...
[2023-11-19 07:42:52,091 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:52" (1/1) ...
[2023-11-19 07:42:52,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:52" (1/1) ...
[2023-11-19 07:42:52,101 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:52" (1/1) ...
[2023-11-19 07:42:52,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:52" (1/1) ...
[2023-11-19 07:42:52,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:52" (1/1) ...
[2023-11-19 07:42:52,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:42:52,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:42:52,111 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:42:52,111 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:42:52,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:52" (1/1) ...
[2023-11-19 07:42:52,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:42:52,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c4e78c-8a9c-4758-be94-bbd77368380d/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:42:52,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c4e78c-8a9c-4758-be94-bbd77368380d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:42:52,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c4e78c-8a9c-4758-be94-bbd77368380d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:42:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure allocator
[2023-11-19 07:42:52,218 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator
[2023-11-19 07:42:52,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-11-19 07:42:52,219 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator
[2023-11-19 07:42:52,219 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator
[2023-11-19 07:42:52,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-11-19 07:42:52,220 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2023-11-19 07:42:52,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:42:52,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:42:52,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:42:52,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:42:52,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:42:52,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:42:52,223 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 07:42:52,377 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 07:42:52,379 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:42:52,667 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 07:42:52,680 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:42:52,681 INFO L302 CfgBuilder]: Removed 0 assume(true) statements.
[2023-11-19 07:42:52,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:52 BoogieIcfgContainer
[2023-11-19 07:42:52,686 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:42:52,690 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:42:52,690 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:42:52,695 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:42:52,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:42:51" (1/3) ...
[2023-11-19 07:42:52,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656f731e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:52, skipping insertion in model container
[2023-11-19 07:42:52,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:52" (2/3) ...
[2023-11-19 07:42:52,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656f731e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:52, skipping insertion in model container
[2023-11-19 07:42:52,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:52" (3/3) ...
[2023-11-19 07:42:52,700 INFO L112 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i
[2023-11-19 07:42:52,712 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2023-11-19 07:42:52,725 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:42:52,726 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2023-11-19 07:42:52,726 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-11-19 07:42:52,819 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2023-11-19 07:42:52,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 98 transitions, 210 flow
[2023-11-19 07:42:52,962 INFO L124 PetriNetUnfolderBase]: 5/96 cut-off events.
[2023-11-19 07:42:52,963 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-11-19 07:42:52,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 96 events. 5/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 67. Up to 3 conditions per place.
[2023-11-19 07:42:52,971 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 98 transitions, 210 flow
[2023-11-19 07:42:52,977 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 86 transitions, 181 flow
[2023-11-19 07:42:52,983 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:42:52,998 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 86 transitions, 181 flow
[2023-11-19 07:42:53,002 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 86 transitions, 181 flow
[2023-11-19 07:42:53,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 86 transitions, 181 flow
[2023-11-19 07:42:53,044 INFO L124 PetriNetUnfolderBase]: 5/86 cut-off events.
[2023-11-19 07:42:53,044 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2023-11-19 07:42:53,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 86 events. 5/86 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 67. Up to 3 conditions per place.
[2023-11-19 07:42:53,048 INFO L119 LiptonReduction]: Number of co-enabled transitions 1042
[2023-11-19 07:42:57,899 INFO L134 LiptonReduction]: Checked pairs total: 4299
[2023-11-19 07:42:57,899 INFO L136 LiptonReduction]: Total number of compositions: 78
[2023-11-19 07:42:57,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:42:57,948 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;@2f7b94ee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:42:57,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2023-11-19 07:42:57,958 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 07:42:57,958 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events.
[2023-11-19 07:42:57,959 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:42:57,959 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:42:57,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-11-19 07:42:57,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] ===
[2023-11-19 07:42:57,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:42:57,968 INFO L85 PathProgramCache]: Analyzing trace with hash 342973097, now seen corresponding path program 1 times
[2023-11-19 07:42:57,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:42:57,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831566195]
[2023-11-19 07:42:57,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:42:57,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:42:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:58,263 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 07:42:58,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:42:58,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831566195]
[2023-11-19 07:42:58,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831566195] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:42:58,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:42:58,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:42:58,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423136171]
[2023-11-19 07:42:58,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:42:58,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:42:58,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:42:58,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:42:58,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:42:58,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 176
[2023-11-19 07:42:58,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:58,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:42:58,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 176
[2023-11-19 07:42:58,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:42:58,496 INFO L124 PetriNetUnfolderBase]: 131/294 cut-off events.
[2023-11-19 07:42:58,496 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES.
[2023-11-19 07:42:58,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 294 events. 131/294 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1279 event pairs, 59 based on Foata normal form. 44/293 useless extension candidates. Maximal degree in co-relation 494. Up to 119 conditions per place.
[2023-11-19 07:42:58,506 INFO L140 encePairwiseOnDemand]: 171/176 looper letters, 24 selfloop transitions, 2 changer transitions 0/32 dead transitions.
[2023-11-19 07:42:58,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 128 flow
[2023-11-19 07:42:58,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:42:58,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:42:58,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions.
[2023-11-19 07:42:58,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5397727272727273
[2023-11-19 07:42:58,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions.
[2023-11-19 07:42:58,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions.
[2023-11-19 07:42:58,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:42:58,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions.
[2023-11-19 07:42:58,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:58,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:58,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:58,555 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 65 flow. Second operand 3 states and 285 transitions.
[2023-11-19 07:42:58,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 128 flow
[2023-11-19 07:42:58,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 32 transitions, 122 flow, removed 0 selfloop flow, removed 3 redundant places.
[2023-11-19 07:42:58,561 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 56 flow
[2023-11-19 07:42:58,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=29, PETRI_TRANSITIONS=24}
[2023-11-19 07:42:58,567 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places.
[2023-11-19 07:42:58,568 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 56 flow
[2023-11-19 07:42:58,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:58,568 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:42:58,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:42:58,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 07:42:58,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] ===
[2023-11-19 07:42:58,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:42:58,570 INFO L85 PathProgramCache]: Analyzing trace with hash 572420913, now seen corresponding path program 1 times
[2023-11-19 07:42:58,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:42:58,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874158423]
[2023-11-19 07:42:58,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:42:58,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:42:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:58,646 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 07:42:58,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:42:58,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874158423]
[2023-11-19 07:42:58,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874158423] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:42:58,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:42:58,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:42:58,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401003050]
[2023-11-19 07:42:58,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:42:58,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:42:58,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:42:58,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:42:58,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:42:58,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 176
[2023-11-19 07:42:58,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:58,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:42:58,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 176
[2023-11-19 07:42:58,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:42:58,755 INFO L124 PetriNetUnfolderBase]: 211/406 cut-off events.
[2023-11-19 07:42:58,756 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES.
[2023-11-19 07:42:58,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 406 events. 211/406 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1607 event pairs, 97 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 552. Up to 228 conditions per place.
[2023-11-19 07:42:58,759 INFO L140 encePairwiseOnDemand]: 170/176 looper letters, 27 selfloop transitions, 4 changer transitions 4/37 dead transitions.
[2023-11-19 07:42:58,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 37 transitions, 155 flow
[2023-11-19 07:42:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:42:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:42:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions.
[2023-11-19 07:42:58,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666
[2023-11-19 07:42:58,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions.
[2023-11-19 07:42:58,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions.
[2023-11-19 07:42:58,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:42:58,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions.
[2023-11-19 07:42:58,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:58,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:58,767 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:58,767 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 56 flow. Second operand 3 states and 286 transitions.
[2023-11-19 07:42:58,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 37 transitions, 155 flow
[2023-11-19 07:42:58,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 37 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:42:58,769 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 78 flow
[2023-11-19 07:42:58,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=25}
[2023-11-19 07:42:58,770 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places.
[2023-11-19 07:42:58,770 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 78 flow
[2023-11-19 07:42:58,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:58,771 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:42:58,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:42:58,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 07:42:58,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] ===
[2023-11-19 07:42:58,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:42:58,772 INFO L85 PathProgramCache]: Analyzing trace with hash 315039587, now seen corresponding path program 1 times
[2023-11-19 07:42:58,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:42:58,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572920390]
[2023-11-19 07:42:58,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:42:58,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:42:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:58,829 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 07:42:58,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:42:58,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572920390]
[2023-11-19 07:42:58,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572920390] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:42:58,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:42:58,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:42:58,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905664605]
[2023-11-19 07:42:58,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:42:58,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:42:58,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:42:58,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:42:58,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:42:58,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 176
[2023-11-19 07:42:58,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:58,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:42:58,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 176
[2023-11-19 07:42:58,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:42:58,925 INFO L124 PetriNetUnfolderBase]: 167/324 cut-off events.
[2023-11-19 07:42:58,925 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES.
[2023-11-19 07:42:58,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 324 events. 167/324 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1188 event pairs, 88 based on Foata normal form. 24/325 useless extension candidates. Maximal degree in co-relation 550. Up to 196 conditions per place.
[2023-11-19 07:42:58,928 INFO L140 encePairwiseOnDemand]: 171/176 looper letters, 24 selfloop transitions, 2 changer transitions 7/34 dead transitions.
[2023-11-19 07:42:58,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 34 transitions, 161 flow
[2023-11-19 07:42:58,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:42:58,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:42:58,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions.
[2023-11-19 07:42:58,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5397727272727273
[2023-11-19 07:42:58,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions.
[2023-11-19 07:42:58,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions.
[2023-11-19 07:42:58,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:42:58,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions.
[2023-11-19 07:42:58,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:58,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:58,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:58,935 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 78 flow. Second operand 3 states and 285 transitions.
[2023-11-19 07:42:58,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 34 transitions, 161 flow
[2023-11-19 07:42:58,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 34 transitions, 155 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:42:58,938 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 70 flow
[2023-11-19 07:42:58,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=31, PETRI_TRANSITIONS=22}
[2023-11-19 07:42:58,939 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places.
[2023-11-19 07:42:58,939 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 70 flow
[2023-11-19 07:42:58,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:58,940 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:42:58,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:42:58,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-19 07:42:58,941 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] ===
[2023-11-19 07:42:58,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:42:58,941 INFO L85 PathProgramCache]: Analyzing trace with hash 382456341, now seen corresponding path program 1 times
[2023-11-19 07:42:58,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:42:58,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172363705]
[2023-11-19 07:42:58,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:42:58,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:42:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:59,069 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 07:42:59,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:42:59,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172363705]
[2023-11-19 07:42:59,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172363705] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:42:59,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:42:59,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 07:42:59,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561382306]
[2023-11-19 07:42:59,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:42:59,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:42:59,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:42:59,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:42:59,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:42:59,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 176
[2023-11-19 07:42:59,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:59,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:42:59,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 176
[2023-11-19 07:42:59,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:42:59,145 INFO L124 PetriNetUnfolderBase]: 71/204 cut-off events.
[2023-11-19 07:42:59,145 INFO L125 PetriNetUnfolderBase]: For 57/59 co-relation queries the response was YES.
[2023-11-19 07:42:59,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 204 events. 71/204 cut-off events. For 57/59 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 891 event pairs, 27 based on Foata normal form. 10/207 useless extension candidates. Maximal degree in co-relation 345. Up to 120 conditions per place.
[2023-11-19 07:42:59,147 INFO L140 encePairwiseOnDemand]: 174/176 looper letters, 16 selfloop transitions, 1 changer transitions 4/27 dead transitions.
[2023-11-19 07:42:59,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 27 transitions, 124 flow
[2023-11-19 07:42:59,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:42:59,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:42:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions.
[2023-11-19 07:42:59,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303
[2023-11-19 07:42:59,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions.
[2023-11-19 07:42:59,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions.
[2023-11-19 07:42:59,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:42:59,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions.
[2023-11-19 07:42:59,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:59,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:59,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:59,154 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 70 flow. Second operand 3 states and 280 transitions.
[2023-11-19 07:42:59,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 27 transitions, 124 flow
[2023-11-19 07:42:59,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:42:59,157 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 73 flow
[2023-11-19 07:42:59,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=22}
[2023-11-19 07:42:59,158 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places.
[2023-11-19 07:42:59,158 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 73 flow
[2023-11-19 07:42:59,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:59,159 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:42:59,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:42:59,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-19 07:42:59,160 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] ===
[2023-11-19 07:42:59,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:42:59,160 INFO L85 PathProgramCache]: Analyzing trace with hash -751972205, now seen corresponding path program 2 times
[2023-11-19 07:42:59,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:42:59,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033961288]
[2023-11-19 07:42:59,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:42:59,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:42:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:42:59,331 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 07:42:59,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:42:59,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033961288]
[2023-11-19 07:42:59,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033961288] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:42:59,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:42:59,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 07:42:59,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809504521]
[2023-11-19 07:42:59,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:42:59,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:42:59,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:42:59,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:42:59,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:42:59,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 176
[2023-11-19 07:42:59,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:59,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:42:59,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 176
[2023-11-19 07:42:59,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:42:59,469 INFO L124 PetriNetUnfolderBase]: 58/141 cut-off events.
[2023-11-19 07:42:59,469 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES.
[2023-11-19 07:42:59,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 141 events. 58/141 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 412 event pairs, 11 based on Foata normal form. 12/153 useless extension candidates. Maximal degree in co-relation 200. Up to 55 conditions per place.
[2023-11-19 07:42:59,470 INFO L140 encePairwiseOnDemand]: 169/176 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions.
[2023-11-19 07:42:59,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 164 flow
[2023-11-19 07:42:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-19 07:42:59,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-11-19 07:42:59,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 410 transitions.
[2023-11-19 07:42:59,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909
[2023-11-19 07:42:59,473 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 410 transitions.
[2023-11-19 07:42:59,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 410 transitions.
[2023-11-19 07:42:59,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:42:59,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 410 transitions.
[2023-11-19 07:42:59,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:59,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:59,478 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:59,479 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 73 flow. Second operand 5 states and 410 transitions.
[2023-11-19 07:42:59,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 164 flow
[2023-11-19 07:42:59,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 147 flow, removed 4 selfloop flow, removed 4 redundant places.
[2023-11-19 07:42:59,481 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow
[2023-11-19 07:42:59,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0}
[2023-11-19 07:42:59,482 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places.
[2023-11-19 07:42:59,482 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow
[2023-11-19 07:42:59,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:42:59,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining)
[2023-11-19 07:42:59,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining)
[2023-11-19 07:42:59,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining)
[2023-11-19 07:42:59,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining)
[2023-11-19 07:42:59,486 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining)
[2023-11-19 07:42:59,487 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining)
[2023-11-19 07:42:59,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-19 07:42:59,487 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1]
[2023-11-19 07:42:59,493 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2023-11-19 07:42:59,493 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-11-19 07:42:59,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:42:59 BasicIcfg
[2023-11-19 07:42:59,497 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-19 07:42:59,498 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-19 07:42:59,498 INFO L270 PluginConnector]: Initializing Witness Printer...
[2023-11-19 07:42:59,498 INFO L274 PluginConnector]: Witness Printer initialized
[2023-11-19 07:42:59,499 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:52" (3/4) ...
[2023-11-19 07:42:59,500 INFO L137 WitnessPrinter]: Generating witness for correct program
[2023-11-19 07:42:59,505 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure allocator
[2023-11-19 07:42:59,505 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure de_allocator
[2023-11-19 07:42:59,509 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges
[2023-11-19 07:42:59,510 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2023-11-19 07:42:59,510 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2023-11-19 07:42:59,510 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2023-11-19 07:42:59,599 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c4e78c-8a9c-4758-be94-bbd77368380d/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml
[2023-11-19 07:42:59,599 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c4e78c-8a9c-4758-be94-bbd77368380d/bin/uautomizer-verify-uCwYo4JHxu/witness.yml
[2023-11-19 07:42:59,600 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-19 07:42:59,600 INFO L158 Benchmark]: Toolchain (without parser) took 8442.78ms. Allocated memory was 127.9MB in the beginning and 184.5MB in the end (delta: 56.6MB). Free memory was 79.9MB in the beginning and 128.0MB in the end (delta: -48.1MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB.
[2023-11-19 07:42:59,601 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 127.9MB. Free memory is still 100.0MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:42:59,601 INFO L158 Benchmark]: CACSL2BoogieTranslator took 847.64ms. Allocated memory is still 127.9MB. Free memory was 79.9MB in the beginning and 60.1MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB.
[2023-11-19 07:42:59,601 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.52ms. Allocated memory is still 127.9MB. Free memory was 59.8MB in the beginning and 58.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-19 07:42:59,602 INFO L158 Benchmark]: Boogie Preprocessor took 38.48ms. Allocated memory is still 127.9MB. Free memory was 57.8MB in the beginning and 56.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:42:59,602 INFO L158 Benchmark]: RCFGBuilder took 575.86ms. Allocated memory was 127.9MB in the beginning and 184.5MB in the end (delta: 56.6MB). Free memory was 56.4MB in the beginning and 152.2MB in the end (delta: -95.8MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB.
[2023-11-19 07:42:59,603 INFO L158 Benchmark]: TraceAbstraction took 6807.54ms. Allocated memory is still 184.5MB. Free memory was 151.2MB in the beginning and 133.2MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2023-11-19 07:42:59,603 INFO L158 Benchmark]: Witness Printer took 101.71ms. Allocated memory is still 184.5MB. Free memory was 133.2MB in the beginning and 128.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB.
[2023-11-19 07:42:59,605 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.41ms. Allocated memory is still 127.9MB. Free memory is still 100.0MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 847.64ms. Allocated memory is still 127.9MB. Free memory was 79.9MB in the beginning and 60.1MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 61.52ms. Allocated memory is still 127.9MB. Free memory was 59.8MB in the beginning and 58.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 38.48ms. Allocated memory is still 127.9MB. Free memory was 57.8MB in the beginning and 56.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 575.86ms. Allocated memory was 127.9MB in the beginning and 184.5MB in the end (delta: 56.6MB). Free memory was 56.4MB in the beginning and 152.2MB in the end (delta: -95.8MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB.
* TraceAbstraction took 6807.54ms. Allocated memory is still 184.5MB. Free memory was 151.2MB in the beginning and 133.2MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* Witness Printer took 101.71ms. Allocated memory is still 184.5MB. Free memory was 133.2MB in the beginning and 128.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: PetriNetLargeBlockEncoding benchmarks
Lipton Reduction Statistics: ReductionTime: 4.9s, 88 PlacesBefore, 31 PlacesAfterwards, 86 TransitionsBefore, 28 TransitionsAfterwards, 1042 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 78 TotalNumberOfCompositions, 4299 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1580, independent: 1348, independent conditional: 0, independent unconditional: 1348, dependent: 232, dependent conditional: 0, dependent unconditional: 232, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 575, independent: 547, independent conditional: 0, independent unconditional: 547, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1580, independent: 801, independent conditional: 0, independent unconditional: 801, dependent: 204, dependent conditional: 0, dependent unconditional: 204, unknown: 575, unknown conditional: 0, unknown unconditional: 575] , Statistics on independence cache: Total cache size (in pairs): 94, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0
- PositiveResult [Line: 702]: a call to reach_error is unreachable
For all program executions holds that a call to reach_error is unreachable at this location
- PositiveResult [Line: 710]: a call to reach_error is unreachable
For all program executions holds that a call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 5 procedures, 127 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 169 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 100 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 258 IncrementalHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 46 mSDtfsCounter, 258 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
2 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2023-11-19 07:42:59,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37c4e78c-8a9c-4758-be94-bbd77368380d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE